BAR DATA HANDBOOK
AISI/SAE
Chemical Compositions
and Metallurgical Data
8000 North County Road 225 East | Pittsboro, Indiana 46167
(877) 683-2277 | f: (317) 892-7005
SECOND EDITION
1
TABLE OF CONTENTS
INTRODUCTION
SDI OVERVIEW 3
COMPANY HISTORY 4
PRODUCTS AND SERVICES 5
PROCESS DESCRIPTION AND CAPABILITIES 7
STEEL CHEMISTRIES
MAJOR STEEL GROUPS 11
AISI-SAE GRADE SERIES OVERVIEW 12
STANDARD CARBON STEELS 15
RESULFURIZED CARBON STEELS 16
REPHOSPHURIZED AND RESULFURIZED CARBON STEELS 16
HIGH MANGANESE CARBON STEELS 17
CARBON AND CARBON-BORON H-STEELS 17
CHEMICAL RANGES AND LIMITS OF CARBON STEELS 18
PERMISSIBLE VARIATIONS OF CARBON STEEL 19
STANDARD ALLOY STEELS 20
STANDARD ALLOY H-STEELS 24
STANDARD ALLOY RH-STEELS 29
SAE POTENTIAL STANDARD STEELS 31
FORMER SAE EX AND PS STEELS 33
FORMER STANDARD SAE STEELS 37
BEARING QUALITY STEELS 50
ASTM A105 55
ASTM A182 56
ASTM A193 58
ASTM A213 59
ASTM A350 61
ASTM A572 62
ASTM A588 63
ASTM A920 64
CHEMICAL RANGES AND LIMITS OF ALLOY STEELS 65
PERMISSIBLE VARIATIONS OF ALLOY STEELS 66
SELECT AEROSPACE SPECIFICATIONS 67
SELECT DIN SPECIFICATIONS 70
HARDENABILITY
STANDARD HARDENABILITY REQUIREMENTS 83
RESTRICTED HARDENABILITY REQUIREMENTS 107
SELECT DIN HARDENABILITY REQUIREMENTS 114
2
TABLE OF CONTENTS
MECHANICAL PROPERTIES
ASTM A105 131
ASTM A350 131
ASTM A434 132
ASTM A182 133
ASTM A193 135
ASTM A572 136
ASTM A588 136
ASTM A615 137
ESTIMATED MECHANICAL PROPERTIES OF STEEL BARS 139
MECHANICAL PROPERTY VARIATIONS WITH CARBON CONENT 150
BAR PROPERTIES
COLD DRAWN OR TURNED AND POLISHED TOLERANCES 151
RECOMMENDED COLD SHEARING LIMITATIONS 152
CARBURIZING RATES 156
RECOMMENDED MAXIMUM HOT WORKING TEMPERATURES 157
CRITICAL TRANSFORMATION TEMPERATURES 158
PERMISSIBLE VARATIONS IN HOT ROLLED BAR CROSS SECTIONS 160
NOMINAL CORNER RADII OF RCS BARS 160
PERMISSIBLE VARIATIONS IN HOT ROLLED LENGTH 161
PERMISSIBLE VARIATIONS IN HOT ROLLED BAR STRAIGHTNESS 161
EQUIVALENT CROSS SECTION BY BAR SIZE AND SHAPE 163
HOT ROLLED BAR WEIGHTS 164
HOT ROLLED BAR REDUCTION RATIOS AT SDI 167
STEEL PROPERTIES
GRAIN SIZE 171
EFFECTS OF ALLOYING ELEMENTS ON STEEL PROPERTIES 172
PRACTICAL INFORMATION
GLOSSARY OF METALLURGICAL TERMS 175
ROLES OF ALLOYING ELEMENTS IN STEEL 176
HEAT TREATING TERMS 180
MECHANICAL PROPERTY TERMS 183
MICROSTRUCTURAL TERMS 185
STEEL DEFECT TERMS 187
HARDNESS CONVERSION TABLE 189
COMMON COVERSION FACTORS 191
3
STEEL DYNAMICS ENGINEERED BAR PRODUCTS
COMPANY OVERVIEW
Steel Dynamics Incorporated (SDI) Engineered Bar Products Division is a
world class supplier of Special Bar Quality steel. The Engineered Bar
Products Division is located in Pittsboro, Indiana, which is just west of
Indianapolis. The Engineered Bar Products facility offers a wide range
of carbon, alloy, and custom designed steel grades to meet exacting
customer demands.
The major markets that are served by the Engineered Bar Products
Division include off highway construction equipment, agricultural
applications, heavy truck, automotive, forging operations, and the gas
and oil well industry.
The Engineered Bar Products Division employs approximately 390
employees and has an annual capacity of 625,000 tons.
MISSION STATEMENT
Steel Dynamics is committed to product and process improvement.
Our mission statement is:
To meet or exceed customer expectations with regard to quality,
service, and price
To be a world-class supplier by continually improving our
processes, equipment, and systems
To be a safe working environment for all employees
To continue to enhance the skills of our employees through
ongoing training and education
ISO 9001 CERTIFICATION
Steel Dynamics Engineered Bar Products Division attained ISO
9001:2000 certification in September 2004.
In January 2010, Steel Dynamics achieved ISO 9001:2008 certification.
4
COMPANY HISTORY
SDI purchased the mill in Pittsboro, Indiana, out of bankruptcy from
Qualitech LLC in February 2003. Qualitech declared bankruptcy in 1999
and ceased operations in 2001.
A significant capital investment was undertaken to bring the existing
facility up to SDI standards, which included the following:
Completely rebuilding the ladle metallurgy facility and the
addition of new ladle cars
New carbon and lime system and baghouse upgrades at the
Electric Arc Furnace
The continuous caster was modified to allow for the capacity to
cast 7”x7” billets
An 8 stand Morgardshammar finishing mill was added to the
existing Pomini mill
Upgrades were made to the shipping department, which handles
incoming scrap, as well as finished inventory and outgoing
products
An additional 40 acres was purchased for rail infrastructure and
scrap storage
The Engineered Bar Products Division made its first shipments of SBQ
products in December 2003, and the facility became profitable in April
2004.
An additional upgrade was made in mid 2006 to add a 150,000 square
foot bar finishing facility with the capability to offer value added
services such as heat treatment, straightening, turning and polishing,
bar inspection, and precision cutting. The free-standing facility has the
capacity to finish 160,000 tons of bars annually.
5
PRODUCTS AND SERVICES
SDI produces special bar quality (SBQ) and merchant bar quality (MBQ)
steel in rounds ranging in diameter from 1 to 9 inches and round
cornered squares (RCS) ranging in diameter from 2-1/2 to 8 inches. The
facility also has the ability to produce rebar in sizes 5 through 11. The
production and availability of rebar is based on market conditions.
SDI produces a wide range of carbon and low alloy steels, such as:
Plain carbon steels (AISI series 10xx)
Resulfurized carbon steels (AISI series 11xx)
Rephosphorized and Resulfurized carbon steels (AISI series 12xx)
High Manganese carbon steels (AISI series 13xx and 15xx)
Cr Alloy Steels (AISI series 51xx and 52xx)
Cr-Mo Alloy Steels (AISI series 41xx)
Ni-Cr-Mo Alloy Steels (AISI Series 43xx, 47xx, 86xx, and 88xx)
Vanadium micro-alloy steels (10V45, 11V41)
Boron Treated Steels
Structural Grades ASTM A36 and A572 Grade 50
Low Alloy Tube and Flange Grades (T2/F2, T11/F11, T22/F22)
The grades listed above are a summary of those produced at the
Engineered Bar Products facility. Please inquire for grades not listed
above or for custom designed grades.
Hot-Rolled cut lengths are available between 16 and 40 feet. Steel
Dynamics can maintain all ASTM tolerances for diameter, length, and
straightness on all hot rolled products.
The Engineered Bar Products Rolling Mill metallurgical lab has the
capability to provide the full spectrum of metallurgical testing including
tensile, hardness, charpy impact, grain size, jominy, microcleanliness,
macrocleanliness, and aircraft quality testing.
6
The Engineered Bar Products Bar Finishing facility is equipped to
perform heat treating operations such as Quench and Temper,
Normalizing, and Annealing (LP, Spheroidize, Cold Shear, Stress
Relieve). In addition to heat treating, the Bar Finishing facility can
provide additional services such as:
Straightening
Turning and Polishing
Cutting to Length
Shot Blasting
Non Destructive Testing
The Bar Finishing Metallurgical Lab at Steel Dynamics has the capability
to provide metallurgical testing such as tensile, hardness, and charpy
impact following heat treatment. The lab is also equipped with a
scanning electron microscope that is used for research and product
evaluation purposes.
7
PROCESS DESCRIPTION AND CAPABILITIES
MELTING AND CASTING
SDI is equipped with one Electric Arc Furnace (EAF). The EAF is charged
with approximately 115 tons of primarily scrap metal in order to yield
an aim tapped heat size of 100 tons. Heats are killed following tap with
a Silicon-Manganese addition.
Following tap, heats are treated at a Ladle Metallurgy Facility (LMF). At
the LMF, slag additions and modifiers are used to work the slag and
trap inclusions. Alloy additions are made at the LMF, as well as reheating the steel for further processing or shipment to the caster.
Heats that require degas treatment have the slag layer removed by
means of a mechanical rake. These heats are then treated at the
Vacuum Tank Degasser (VTD). Typical gas levels following VTD
treatment are 2 ppm H2, 80 ppm N2, and 20 ppm O2.
The continuous caster is a three strand, vertical curved radius machine.
Each strand is equipped with automatic mould level control and
electromagnetic stirring. Five withdrawal straightener units are used to
straighten the strands and also apply soft reduction. The dimensions of
the semi-finished bloom are 10.3 x 14.1 inches.
ROLLING
The rolling mill is equipped with a walking beam furnace with a capacity
of 125 tons per hour. Blooms are de-scaled after exiting the furnace,
and then proceed through a five stand roughing mill, a six stand
intermediate mill, and an eight stand finishing mill. Dimensional control
is maintained by optical laser gauges and manual micrometer checks.
Bars are sheared after reaching their final dimension onto a 125 feet
long walking beam cooling bed. Bars are then trimmed to the specified
cut length and bundled together for shipment.
8
HEAT TREATING
The Bar Finishing facility is equipped with five Sauder Energy Car
Bottom furnaces. There is one high temperature furnace capable of
reaching 2100°F, while the others are capable of reaching 1800°F. The
furnaces are limited to a maximum bar length of 33 feet. The quench
tank has a 30,000 gallon capacity and is capable of providing agitation
and temperature control. Water is the only quench media used at the
Bar Finishing facility. The minimum bar diameter that can be quenched
is 2.5 inches.
BAR INSPECTION
There are two inspection lines at the Bar Finishing facility, a small bar
inspection line (SBIL) and a large bar inspection line (LBIL). The SBIL can
accommodate round bars ranging in diameter from one to five inches
while the LBIL can accommodate round bars from 2.5 to 9 inches and
round cornered squares from 2.5 to 8 inches. Both lines can
accommodate bar lengths of 15 to 45 feet.
At the SBIL, bars are rotary straightened and chamfered prior to
inspection. Surface inspection is performed via a Forester Magnetic
Flux Leakage unit, capable of 100% surface coverage with seam
detection of 0.3 mm for smaller bars and 0.5 mm for larger bars.
Ultrasonic inspection is performed via a rotary immersion UT inspection
unit, capable of 100% volumetric coverage using normal incidence and
shear waves. Ultrasonic inspection is capable of detecting 1mm wide
defects. The SBIL is also equipped with a 100% Eddy Current grade
verification coil.
On the LBIL, bars are shot blasted and pass through an Eddy Current
grade verification coil. Surface inspection is performed via an Eddy
Current surface inspection unit, capable of 100% surface coverage with
seam detection of 0.5mm. Ultrasonic inspection is performed via a
Magnetic Analysis Corp 48 channel transducer with four fixed heads,
capable of 100% volumetric coverage. Ultrasonic inspection is capable
of detecting 1mm wide defects.
9
TURNING AND POLISHING
The turning line has a capacity of 1.031 inch to 4.25 inch incoming
diameter, and is capable of meeting ASTM A108 tolerances. The line
can accommodate bar lengths ranging from 14 to 25 feet. The line is
equipped with bar chamfering, facing, and etching capabilities. The
straightener/polisher is capable of attaining greater than 25Ra surface
finish. The turning line is equipped with an Eddy Current tester for
surface inspection.
STRAIGHTENING
The bar finishing facility has a Bronx Nine Roll straightener and a #5
Medart Two Roll straightener. The units are capable of meeting both
standard and special straightness tolerances as listed in ASTM A29.
MULT CUT-TO-LENGTH SAWING
Cut-to-length sawing is accomplished with two Nishijimax Precision
Carbide Rotary Saws, with a capacity of 1.00 to 5.9 inch rounds. The
saws can produce cut lengths from 0.5 to 118 inches, with a standard
length tolerance of +/- 0.010” or 0.25 mm.
A Hem High Speed Double Column band saw line is also available. It has
a capacity of 4 to 25 inch rounds as well as being able to cut bundles.
Cut lengths are available from 5 to 24 feet, with a tolerance of -0/+0.25
inches.
10
NOTES
11
MAJOR STEEL GROUPS
Carbon Steel
Carbon steel usually contains up to 1.65% manganese, and contains no
other added elements to provide any specific alloying effects, except for
deoxidation or grain size control. Carbon steels are often classified
according to carbon concentration, i.e. low, medium, and high carbon
steels. The term ‘plain carbon steel’ is often used to describe steels
which only contain residual concentrations of impurities other than
carbon and manganese.
The greatest quantity of steel produced falls into the low-carbon
classification, and is typically less than 0.25% carbon. Low-carbon steels
are typically unresponsive to heat treatments intended to form
martensite and strengthening is usually accomplished through cold
working. Low-carbon steels are relatively soft and weak but have
excellent ductility and toughness.
Medium-carbon steels have carbon concentrations typically between
0.25% and 0.60%, and may be heat treated by austenitizing, quenching,
and tempering to improve their mechanical properties. Mediumcarbon steels are stronger than low-carbon steels, but with a reduction
in ductility and toughness. High-carbon steels have carbon
concentrations typically between 0.60% and 1.4%, and are the hardest
and strongest of the carbon steels, but with the least amount of
ductility.
Microalloy Steel
Microalloy steels, or High Strength Low Alloy (HSLA) steels, are a group
of low-carbon steels which contain a small but deliberate addition of
one or more alloying elements such as: vanadium, columbium, and
titanium. These steels have increased strength, combined with good
ductility in the hot rolled condition. These properties are achieved by a
combination of fine grain size and precipitation of finely dispersed
particles throughout the steel’s microstructure. Some HSLA steels have
improved atmospheric corrosion.
Alloy Steel
Steel containing significant quantities of one or more alloying elements
(other than carbon and the commonly accepted amounts of
manganese, and silicon) added to make changes in mechanical or
physical properties. Common alloying elements include nickel,
chromium, and molybdenum, among others.
12
AISI-SAE GRADE DESIGNATIONS
The most widely used system for designating carbon and alloy steels
was developed by the American Iron and Steel Institute (AISI) and the
Society of Automotive Engineers (SAE). In this system, a particular
designation implies the same limits and ranges of chemical composition
for both an AISI steel and the corresponding SAE steel. Any differences
between AISI and SAE grade designations or limits of chemical
composition are unintentional. The fact that a particular steel grade is
listed by AISI or SAE implies only that it has been produced in
appreciable quantity. It does not imply that other grades are
unavailable, nor does it imply that any particular steel producer makes
all of the listed grades. All compositions are expressed as weight
percents. The SAE designations are published in the annual SAE
handbook under various SAE standards. These standards are comprised
entirely of listings of SAE designations and the limits and ranges of
chemical composition defined by these designations.
UNS DESIGNATIONS
The Unified Numbering System (UNS) has been developed by the AISI,
SAE, and several other technical societies, trade associations, and
United States government agencies. A UNS number, which is a
designation of a chemical composition and not a specification, is
assigned to each chemical composition of a metallic alloy. Existing
systems of designations, including the AISI-SAE system for steels, have
been incorporated into the UNS designations.
The UNS designation of a metallic alloy consists of a letter and five
numerals. The letters indicate the broad class of alloys, and the
numerals define specific alloys and modifications within each class. For
practical purposes, carbon and alloy steel bars begin with the letters G
or H, the latter describing H-band steels. The first four numerals usually
describe the AISI-SAE steel grade designation. The last numeral is
typically a zero, unless the steel is modified as follows: a 1 in the last
digit signifies boron; a 4 in the last digit signifies lead; a 6 in the last digit
indicates Electric Furnace practice with reduced levels of phosphorus
and sulfur. The Unified Numbering System is described in greater detail
in the latest editions of SAE J1086 and ASTM E 527. The grades in this
13
manual will be described with the standard AISI-SAE designation
instead of the UNS designation.
Certain elements are present in small quantities in most steels. They
are not intentionally added, but exist in the steel due to the raw
materials used during production. These elements are considered
residual or incidental as long as they do not exceed specified maximum
limits. The common residual elements of concern are Cu, Ni, Cr, and
Mo, with common accepted maximum limits of: 0.35% Cu, 0.25% Ni,
0.20% Cr, and 0.06% Mo according to SAE and ASTM standards. All
standard grades listed are subject to these residual maximum limits
unless otherwise noted. Any differences in the maximum residual limits
must be agreed upon by purchaser and supplier.
14
AISI-SAE GRADE SERIES OVERVIEW FOR CARBON & ALLOY STEELS
Grade
Series
Designation
Principal
Identifying
Elements
Nominal Weight Percentage of
Indentifying Elements
10xx
Mn
Mn (0.45, 0.65, 0.75, 0.85) – S (0.050 Max)
11xx
Mn-S
Mn (0.85, 1.15, 1.50) – S (Over 0.050)
12xx
Mn-P-S
Mn (0.85, 0.93, 1.00) – P (0.065, 0.095) –
S (0.20, 0.29, 0.31)
13xx
Mn
Mn (1.75)
15xx
Mn
Mn (0.90, 1.00, 1.15, 1.25,1.50)
23xx
Ni
Ni (3.50)
25xx
Ni
Ni (5.00)
31xx
Ni-Cr
Ni (1.25) – Cr (0.65, 0.80)
32xx
Ni-Cr
Ni (1.75) – Cr (1.07)
33xx
Ni-Cr
Ni (3.50) – Cr (1.50, 1.57)
34xx
Ni-Cr
Ni (3.00) – Cr (0.77)
40xx
Mo/Mo-S
Mo (0.20,0.25) or Mo (0.25) – S (0.040)
41xx
Cr-Mo
Cr (0.50, 0.80, 0.95) – Mo (0.12, 0.20, 0.30)
43xx
Ni-Cr-Mo
Ni (1.85) – Cr (0.50, 0.80) – Mo (0.25)
44xx
Mo
Mo (0.50)
46xx
Ni-Mo
Ni (0.85, 1.85) – Mo (0.20, 0.25)
47xx
Ni-Cr-Mo
Ni (1.05) – Cr (0.45) – Mo (0.20, 0.35)
48xx
Ni-Mo
Ni (3.50) – Mo (0.25)
50xx(x)
Cr
Cr (0.30, 0.50)
51xx(x)
Cr
Cr (0.80, 0.90, 1.00)
52xx(x)
Cr
Cr (1.45)
61xx
Cr-V
Cr (0.60, 0.95) – V (0.15)
81xx
Ni-Cr-Mo
Ni (0.30) – Cr (0.40) – Mo (0.12)
86xx
Ni-Cr-Mo
Ni (0.55) – Cr (0.50) – Mo (0.20)
87xx
Ni-Cr-Mo
Ni (0.55) – Cr (0.50) – Mo (0.25)
88xx
Ni-Cr-Mo
Ni (0.55) – Cr (0.50) – Mo (0.35)
92xx
Si/Si-Cr
Si (2.00) or Si (1.40) – Cr (0.70) or
Si (1.00) – Cr(0.55)
93xx
Ni-Cr-Mo
Ni (3.25) – Cr (1.25) – Mo (0.12)
94xx
Ni-Cr-Mo
Ni (0.45) – Cr (0.40) – Mo (0.12)
97xx
Ni-Cr-Mo
Ni (0.55) – Cr (0.20) – Mo (0.20)
98xx
Ni-Cr-Mo
Ni (1.00) – Cr (0.80) – Mo (0.25)
Note: xx(x) in the last two (or three) digits indicates that the carbon content, in hundredths of a
percent, is to be inserted. (Carbon and Alloy Steels, ASM International, 1996, pg 14)
15
STANDARD CARBON STEELS
ASTM A 576 – 90b (Reapproved 2006)
Steel Grade
Chemical Composition Limits, Percent
A,B,C
C
Mn
P max
S max 1008
0.10 max
0.30/0.50
0.040
0.050
1010
0.08/0.13
0.30/0.60
0.040
0.050
1012
0.10/0.15
0.30/0.60
0.040
0.050
1015
0.13/0.18
0.30/0.60
0.040
0.050
1016
0.13/0.18
0.60/0.90
0.040
0.050
1017
0.15/0.20
0.30/0.60
0.040
0.050
1018
0.15/0.20
0.60/0.90
0.040
0.050
1019
0.15/0.20
0.70/1.00
0.040
0.050
1020
0.18/0.23
0.30/0.60
0.040
0.050
1021
0.18/0.23
0.60/0.90
0.040
0.050
1022
0.18/0.23
0.70/1.00
0.040
0.050
1023
0.20/0.25
0.30/0.60
0.040
0.050
1025
0.22/0.28
0.30/0.60
0.040
0.050
1026
0.22/0.28
0.60/0.90
0.040
0.050
1029
0.25/0.31
0.60/0.90
0.040
0.050
1030
0.28/0.34
0.60/0.90
0.040
0.050
1035
0.32/0.38
0.60/0.90
0.040
0.050
1037
0.32/0.38
0.70/1.00
0.040
0.050
1038
0.35/0.42
0.60/0.90
0.040
0.050
1039
0.37/0.44
0.70/1.00
0.040
0.050
1040
0.37/0.44
0.60/0.90
0.040
0.050
1042
0.40/0.47
0.60/0.90
0.040
0.050
1043
0.40/0.47
0.70/1.00
0.040
0.050
1044
0.43/0.50
0.30/0.60
0.040
0.050
1045
0.43/0.50
0.60/0.90
0.040
0.050
1046
0.43/0.50
0.70/1.00
0.040
0.050
1049
0.46/0.53
0.60/0.90
0.040
0.050
1050
0.48/0.55
0.60/0.90
0.040
0.050
1053
0.48/0.55
0.70/1.00
0.040
0.050
1055
0.50/0.60
0.60/0.90
0.040
0.050
1060
0.55/0.65
0.60/0.90
0.040
0.050
1070
0.65/0.75
0.60/0.90
0.040
0.050
1078
0.72/0.85
0.30/0.60
0.040
0.050
1080
0.75/0.88
0.60/0.90
0.040
0.050
1084
0.80/0.93
0.60/0.90
0.040
0.050
1090
0.85/0.98
0.60/0.90
0.040
0.050
1095
0.90/1.03
0.30/0.50
0.040
0.050
A
When Si is required, the following ranges are commonly specified: 0.10% max,
0.10/0.20%, 0.15/0.35%, or 0.20/0.40%. The range of 0.15/0.35% is most common.
B
Copper can be specified when required as 0.20% minimum.
C
The elements Bi, Ca, Se, or Te may be added as agreed between purchaser and supplier.
16
RESULFURIZED CARBON STEELS
ASTM A 576 – 90b (Reapproved 2006)
Steel
Grade
Chemical Composition Limits, Percent
A,B
C
Mn
P Max
S
1109
0.08/0.13
0.60/0.90
0.040
0.08/0.13
1110
0.08/0.13
0.30/0.60
0.040
0.08/0.13
1116
0.14/0.20
1.10/1.40
0.040
0.16/0.23
1117
0.14/0.20
1.00/1.30
0.040
0.08/0.13
1118
0.14/0.20
1.30/1.60
0.040
0.08/0.13
1119
0.14/0.20
1.00/1.30
0.040
0.24/0.33
1132
0.27/0.34
1.35/1.65
0.040
0.08/0.13
1137
0.32/0.39
1.35/1.65
0.040
0.08/0.13
1139
0.35/0.43
1.35/1.65
0.040
0.13/0.20
1140
0.37/0.44
0.70/1.00
0.040
0.08/0.13
1141
0.37/0.45
1.35/1.65
0.040
0.08/0.13
1144
0.40/0.48
1.35/1.65
0.040
0.24/0.33
1145
0.42/0.49
0.70/1.00
0.04
0.04/0.07
1146
0.42/0.49
0.70/1.00
0.040
0.08/0.13
1151
0.48/0.55
0.70/1.00
0.040
0.08/0.13
A
When Si is required, the following ranges are commonly specified: 0.10% max, 0.10/0.20%,
0.15/0.35%, or 0.20/0.40%. The range of 0.15/0.35% is most common.
B
The elements Bi, Ca, Se, or Te may be added as agreed between purchaser and supplier.
REPHOSPHORIZED AND RESULFURIZED CARBON STEELS
ASTM A 576 – 90b (Reapproved 2006)
Steel
Grade
Chemical Composition Limits, Percent
A,B,C
C
Mn P S
Pb
1211
0.13 max
0.60/0.90
0.07/0.12
0.10/0.15
...
1212
0.13 max
0.70/1.00
0.07/0.12
0.16/0.23
1213
0.13 max
0.70/1.00
0.07/0.12
0.24/0.33
...
1215
0.09 max
0.75/1.05
0.04/0.09
0.26/0.35
...
12L14
0.15 max
0.85/1.15
0.04/0.09
0.26/0.35
0.15/0.35
A
When Pb is required as an added element to a standard steel, a range of 0.15/0.35% is specified.
Such a steel is identified by inserting the letter “L” between the second and third numerals of the
grade designation.
B
The elements Bi, Calcium, Se, or Te may be added as agreed between purchaser and supplier.
C
It is not common practice to produce these steels to specified limits for Si because of the adverse
effect on machinability.
Note: SDI does not produce leaded steels. 12L14 is provided for information only.
17
HIGH MANGANESE CARBON STEELS
ASTM A 576 – 90b (Reapproved 2006)
Steel
Grade
Chemical Composition Limits, Percent
A,B,C,D
C
Mn
P max
S max
1513
0.10/0.16
1.10/1.40
0.040
0.050
1518
0.15/0.21
1.10/1.40
0.040
0.050
1522
0.18/0.24
1.10/1.40
0.040
0.050
1524
0.19/0.25
1.35/1.65
0.040
0.050
1525
0.23/0.29
0.80/1.10
0.040
0.050
1526
0.22/0.29
1.10/1.40
0.040
0.050
1527
0.22/0.29
1.20/1.50
0.040
0.050
1536
0.30/0.37
1.20/1.50
0.040
0.050
1541
0.36/0.44
1.35/1.65
0.040
0.050
1547
0.43/0.51
1.35/1.65
0.040
0.050
1548
0.44/0.52
1.10/1.40
0.040
0.050
1551
0.45/0.56
0.85/1.15
0.040
0.050
1552
0.47/0.55
1.20/1.50
0.040
0.050
1561
0.55/0.65
0.75/1.05
0.040
0.050
1566
0.60/0.71
0.85/1.15
0.040
0.050
1572
0.65/0.76
1.00/1.30
0.040
0.050
A When Si is required, the following ranges are commonly specified: 0.10% max,
0.10/0.20%, 0.15/0.35%, or 0.20/0.40%. The range of 0.15/0.35% is most common.
B
Copper can be specified when required as 0.20% minimum.
C
When B is specified, the typical range is 0.0005 to 0.003%.
D
The elements Bi, Ca, Se, or Te may be added as agreed between purchaser and supplier.
CARBON AND CARBON BORON STEELS SUBJECT TO END
QUENCH HARDENABILITY REQUIREMENTS
(ASTM A 304 – 05)
Steel
Grade
Chemical Composition Limits, Percent
C
Mn
P max
S max
Si
1038 H
0.34/0.43
0.50/1.00
0.040
0.050
0.15/0.30
1045 H
0.42/0.51
0.50/1.00
0.040
0.050
0.15/0.30
1522 H
0.17/0.25
1.00/1.50
0.040
0.050
0.15/0.30
1524 H
0.18/0.26
1.25/1.75
0.040
0.050
0.15/0.30
1526 H
0.21/0.30
1.00/1.50
0.040
0.050
0.15/0.30
1541 H
0.35/0.45
1.25/1.75
0.040
0.050
0.15/0.30
15B21 HA
0.17/0.24
0.70/1.20
0.040
0.050
0.15/0.30
15B30 H
A
0.26/0.34
0.70/1.20
0.040
0.050
0.15/0.30
15B35 H
A
0.31/0.39
0.70/1.20
0.040
0.050
0.15/0.30
15B37 H
A
0.30/0.39
1.00/1.50
0.040
0.050
0.15/0.30
15B41 H
A
0.35/0.45
1.25/1.75
0.040
0.050
0.15/0.30
15B48 H
A
0.43/0.53
1.00/1.50
0.040
0.050
0.15/0.30
15B62 H
A
0.54/0.67
1.00/1.50
0.040
0.050
0.40/0.60
A
Boron treated, with typical range 0.0005 to 0.0030%.
18
CHEMCAL RANGES & LIMITS OF HOT ROLLED CARBON STEELS
ASTM A 576 – 90b (Reapproved 2006)
Element
A
When Maximum of
Specified Element is:
Chemical
Range
Conventional
Lowest Maximum
Carbon –
(When Mn
does NOT
exceed 1.10%)
...
...
0.06
Thru 0.12
...
...
Over 0.12 thru 0.25
0.05
...
Over 0.25 thru 0.40
0.06
...
Over 0.40 thru 0.55
0.07
...
Over 0.55 thru 0.80
0.10
...
Over 0.80
0.13
...
Carbon –
(When Mn
DOES exceed
1.10%)
Over 0.12 thru 0.25
0.06
...
Over 0.25 thru 0.40
0.07
...
Over 0.40 thru 0.55
0.08
...
Over 0.55 thru 0.80
0.11
...
Over 0.80
0.14
...
Manganese
...
...
0.35
Thru 0.40
0.15
...
Over 0.40 thru 0.50
0.20
...
Over 0.50 thru 1.65
0.30
...
Phosphorus
...
...
0.03
Thru 0.04
...
...
Over 0.04 thru 0.08
0.03
...
Over 0.08 thru 0.13
0.05
...
Sulfur
Thru 0.05
...
0.05
Over 0.05 thru 0.09
0.03
...
Over 0.09 thru 0.15
0.05
...
Over 0.15 thru 0.23
0.07
...
Over 0.23 thru 0.50
0.09
...
Silicon
B
Thru 0.10
...
0.10
Over 0.10 thru 0.15
0.08
...
Over 0.15 thru 0.20
0.10
...
Over 0.20 thru 0.30
0.15
...
Over 0.30 thru 0.60
0.20
...
Copper
When Cu is required as an added element, 0.20% minimum is
generally specified
LeadC
Lead is reported only as a range of 0.15 to 0.35% since it is
usually added to the mould or ladle stream as the steel is
poured
Boron
Boron treated steels are typically produced to a range of
0.0005 to 0.003%
A
The specification for the elements Bi, Ca, Se, and Te will be agreed upon between purchaser and
supplier.
B
It is not common practice to produce a Rephosphorized and Resulfurized carbon steel to specified
limits for Si because of its adverse effect on machinability.
C
A heat analysis for Pb is not determinable, since Pb is added to the ladle stream.
19
PERMISSIBLE VARIATIONS FOR PRODUCT ANALYSIS OF CARBON STEEL
ASTM A 29/A 29M – 05
Element
Limit, or Maximum of
Specified Range (%)
Variance Over the
Maximum Limit or Under
the Minimum Limit (%)
CarbonA
Thru 0.25
0.02
Over 0.25 thru 0.55
0.03
Over 0.55
0.04
Manganese
Thru 0.90
0.03
Over 0.90 thru 1.65
0.06
Phosphorus
A,B
Basic steels
0.008 over
Acid Bessemer steel
0.01
Sulfur
A,B
0.008
Silicon
Thru 0.35
0.02
Over 0.35 thru 0.60
0.05
Copper
Under minimum only for Cu
bearing steels
0.02
LeadC
0.15 thru 0.35
0.03
A Rimmed and capped steels are not subject to rejection on product analysis unless misapplication
is clearly indicated.
B Resulfurized or Rephosphorized steels are not subject to rejection on product analysis for these
elements unless misapplication is clearly indicated.
C Product analysis tolerance for lead applies both over and under to a specified range of 0.15/0.35 %.
20
STANDARD ALLOY STEELS
(ASTM A 322 – 07)
Steel Grade
C
Chemical Composition Ranges and Limits, Percent
A,B
C
Mn
Ni
Cr
Mo
Other
1330
0.28/0.33
1.60/1.90
--
--
-- 1335
0.33/0.38
1.60/1.90
--
--
-- 1340
0.38/0.43
1.60/1.90
--
--
-- 1345
0.43/0.48
1.60/1.90
--
--
-- 4023
0.20/0.25
0.70/0.90
--
--
0.20/0.30
4024
0.20/0.25
0.70/0.90
--
--
0.20/0.30
S 0.035/0.050
4027
0.25/0.30
0.70/0.90
--
--
0.20/0.30
4028
0.25/0.30
0.70/0.90
--
--
0.20/0.30
S 0.035/0.050
4037
0.35/0.40
0.70/0.90
--
--
0.20/0.30
4047
0.45/0.50
0.70/0.90
--
--
0.20/0.30
4118
0.18/0.23
0.70/0.90
--
0.40/0.60
0.08/0.15
4120
0.18/0.23
0.90/1.20
--
0.40/0.60
0.13/0.20
4121
0.18/0.23
0.75/1.00
--
0.45/0.65
0.20/0.30
4130
0.28/0.33
0.40/0.60
--
0.80/1.10
0.15/0.25
4137
0.35/0.40
0.70/0.90
--
0.80/1.10
0.15/0.25
4140
0.38/0.43
0.75/1.00
--
0.80/1.10
0.15/0.25
4142
0.40/0.45
0.75/1.00
--
0.80/1.10
0.15/0.25
4145
0.43/0.48
0.75/1.00
--
0.80/1.10
0.15/0.25
4147
0.45/0.50
0.75/1.00
--
0.80/1.10
0.15/0.25
21
STANDARD ALLOY STEELS
(ASTM A 322 – 07)
Steel Grade
C
Chemical Composition Ranges and Limits, Percent
A,B
C
Mn
Ni
Cr
Mo
Other
4150
0.48/0.53
0.75/1.00
--
0.80/1.10
0.15/0.25
4161
0.56/0.64
0.75/1.00
--
0.70/0.90
0.25/0.35
4320
0.17/0.22
0.45/0.65
1.65/2.00
0.40/0.60
0.20/0.30
4340
0.38/0.43
0.60/0.80
1.65/2.00
0.70/0.90
0.20/0.30
E4340D
0.38/0.43
0.65/0.85
1.65/2.00
0.70/0.90
0.20/0.30
4615
0.13/0.18
0.45/0.65
1.65/2.00
--
0.20/0.30
4620
0.17/0.22
0.45/0.65
1.65/2.00
--
0.20/0.30
4621
0.18/0.23
0.70/0.90
1.65/2.00
--
0.20/0.30
4626
0.24/0.29
0.45/0.65
0.70/1.00
--
0.15/0.25
4715
0.13/0.18
0.70/0.90
0.70/1.00
0.45/0.65
0.45/0.60
4720
0.17/0.22
0.50/0.70
0.90/1.20
0.35/0.55
0.15/0.25
4815
0.13/0.18
0.40/0.60
3.25/3.75
...
0.20/0.30
4817
0.13/0.20
0.40/0.60
3.25/3.75
...
0.20/0.30
4820
0.18/0.23
0.50/0.70
3.25/3.75
...
0.20/0.30
5117
0.15/0.20
0.70/0.90
...
0.70/0.90
...
5120
0.17/0.22
0.70/0.90
...
0.70/0.90
...
5130
0.28/0.33
0.70/0.90
...
0.80/1.10
... 5132
0.30/0.35
0.60/0.80
...
0.75/1.00
... 5135
0.33/0.38
0.60/0.80
...
0.80/1.05
...
22
STANDARD ALLOY STEELS
(ASTM A 322 – 07)
Steel Grade
C
Chemical Composition Ranges and Limits, Percent
A,B
C
Mn
Ni
Cr
Mo
Other
5140
0.38/0.43
0.70/0.90
...
0.70/0.90
... 5150
0.48/0.53
0.70/0.90
...
0.70/0.90
... 5155
0.51/0.59
0.70/0.90
0.70/0.90
... 5160
0.56/0.64
0.75/1.00
...
0.70/0.90
... E51100D
0.98/1.10
0.25/0.45
...
0.90/1.15
... E52100
D
0.98/1.10
0.25/0.45
...
1.30/1.60
... 6118
0.16/0.21
0.50/0.70
...
0.50/0.70
...
V 0.10/0.15
6150
0.48/0.53
0.70/0.90
...
0.80/1.10
...
V 0.15 min
8615
0.13/0.18
0.70/0.90
0.40/0.70
0.40/0.60
0.15/0.25
8617
0.15/0.20
0.70/0.90
0.40/0.70
0.40/0.60
0.15/0.25
8620
0.18/0.23
0.70/0.90
0.40/0.70
0.40/0.60
0.15/0.25
8622
0.20/0.25
0.70/0.90
0.40/0.70
0.40/0.60
0.15/0.25
8625
0.23/0.28
0.70/0.90
0.40/0.70
0.40/0.60
0.15/0.25
8627
0.25/0.30
0.70/0.90
0.40/0.70
0.40/0.60
0.15/0.25
8630
0.28/0.33
0.70/0.90
0.40/0.70
0.40/0.60
0.15/0.25
8637
0.35/0.40
0.75/1.00
0.40/0.70
0.40/0.60
0.15/0.25
8640
0.38/0.43
0.75/1.00
0.40/0.70
0.40/0.60
0.15/0.25
8642
0.40/0.45
0.75/1.00
0.40/0.70
0.40/0.60
0.15/0.25
8645
0.43/0.48
0.75/1.00
0.40/0.70
0.40/0.60
0.15/0.25
23
STANDARD ALLOY STEELS
(ASTM A 322 – 07)
Steel Grade
C
Chemical Composition Ranges and Limits, Percent
A,B
C
Mn
Ni
Cr
Mo
Other
8655
0.51/0.59
0.75/1.00
0.40/0.70
0.40/0.60
0.15/0.25
8720
0.18/0.23
0.70/0.90
0.40/0.70
0.40/0.60
0.20/0.30
8822
0.20/0.25
0.75/1.00
0.40/0.70
0.40/0.60
0.30/0.40
9259
0.56/0.64
0.75/1.00
...
0.45/0.65
...
Si 0.70/1.10
9260
0.56/0.64
0.75/1.00
...
...
...
Si 1.80/2.20
Standard Boron Steels
E
50B44
0.43/0.48
0.75/1.00
...
0.20/0.60
... 50B46
0.44/0.49
0.75/1.00
...
0.20/0.35
... 50B50
0.48/0.53
0.75/1.00
...
0.40/0.60
... 50B60
0.56/0.64
0.75/1.00
...
0.40/0.60
... 51B60
0.56/0.64
0.75/1.00
...
0.70/0.90
... 81B45
0.43/0.48
0.75/1.00
0.20/0.40
0.35/0.55
0.08/0.15
94B17
0.15/0.20
0.75/1.00
0.30/0.60
0.30/0.50
0.08/0.15
94B30
0.28/0.33
0.75/1.00
0.30/0.60
0.30/0.50
0.08/0.15
A
Unless noted, all grades have a Si range of 0.15 to 0.35%. Silicon may be specified to 0.10% maximum, which generally relates to severely cold-formed parts.
B
The maximum limits for P and S are 0.035% and 0.040% respectively, unless otherwise agreed upon between purchaser and supplier.
C
Grade designations correspond to the respective AISI and SAE designations. Grade compositions correspond to the respective AISI compositions.
D
The max S and P for Electric Furnace Quality Steels (grades preceded by an ‘E’) is 0.025 max.
E
These steels can be expected to contain 0.0005 to 0.003% B. If the usual Ti additive is not permitted, these steels can be expected to contain up to 0.005% B.
24
ALLOY STEEL GRADES SUBJECT TO END QUENCH HARDENABILITY REQUIREMENTS
(ASTM A 304 – 05)
Steel Grade
Chemical Composition Ranges and Limits, PercentA
C
Mn
Si
Ni
Cr
Mo
1330 H
0.27/0.33
1.45/2.05
0.15/0.35
...
...
...
1335 H
0.32/0.38
1.45/2.05
0.15/0.35
...
...
...
1340 H
0.37/0.44
1.45/2.05
0.15/0.35
...
...
...
1345 H
0.42/0.49
1.45/2.05
0.15/0.35
...
...
...
4027 H
0.24/0.30
0.60/1.00
0.15/0.35
...
...
0.20/0.30
4028 H
B
0.24/0.30
0.60/1.00
0.15/0.35
...
...
0.20/0.30
4032 H
0.29/0.35
0.60/1.00
0.15/0.35
...
...
0.20/0.30
4037 H
0.34/0.41
0.60/1.00
0.15/0.35
...
...
0.20/0.30
4042 H
0.39/0.46
0.60/1.00
0.15/0.35
...
...
0.20/0.30
4047 H
0.44/0.51
0.60/1.00
0.15/0.35
...
...
0.20/0.30
4118 H
0.17/0.23
0.60/1.00
0.15/0.35
...
0.30/0.70
0.08/0.15
4130 H
0.27/0.33
0.30/0.70
0.15/0.35
...
0.75/1.20
0.15/0.25
4135 H
0.32/0.38
0.60/1.00
0.15/0.35
...
0.75/1.20
0.15/0.25
4137 H
0.34/0.41
0.60/1.00
0.15/0.35
...
0.75/1.20
0.15/0.25
4140 H
0.37/0.44
0.65/1.10
0.15/0.35
...
0.75/1.20
0.15/0.25
4142 H
0.39/0.46
0.65/1.10
0.15/0.35
...
0.75/1.20
0.15/0.25
4145 H
0.42/0.49
0.65/1.10
0.15/0.35
...
0.75/1.20
0.15/0.25
25
ALLOY STEEL GRADES SUBJECT TO END QUENCH HARDENABILITY REQUIREMENTS
(ASTM A 304 – 05)
Steel Grade
Chemical Composition Ranges and Limits, PercentA
C
Mn
Si
Ni
Cr
Mo
4147 H
0.44/0.51
0.65/1.10
0.15/0.35
...
0.75/1.20
0.15/0.25
4150 H
0.47/0.54
0.65/1.10
0.15/0.35
...
0.75/1.20
0.15/0.25
4161 H
0.55/0.65
0.65/1.10
0.15/0.35
...
0.65/0.95
0.25/0.35
4320 H
0.17/0.23
0.40/0.70
0.15/0.35
1.55/2.00
0.35/0.65
0.20/0.30
4340 H
0.37/0.44
0.55/0.90
0.15/0.35
1.55/2.00
0.65/0.95
0.20/0.30
E4340 H
0.37/0.44
0.60/0.95
0.15/0.35
1.55/2.00
0.65/0.95
0.20/0.30
4419 H
0.17/0.23
0.35/0.75
0.15/0.35
...
...
0.45/0.60
4620 H
0.17/0.23
0.35/0.75
0.15/0.35
1.55/2.00
...
0.20/0.30
4621 H
0.17/0.23
0.60/1.00
0.15/0.35
1.55/2.00
...
0.20/0.30
4626 H
0.23/0.29
0.40/0.70
0.15/0.35
0.65/1.05
...
0.15/0.25
4718 H
0.15/0.21
0.60/0.95
0.15/0.35
0.85/1.25
0.30/0.60
0.30/0.40
4720 H
0.17/0.23
0.45/0.75
0.15/0.35
0.85/1.25
0.30/0.60
0.15/0.25
4815 H
0.12/0.18
0.30/0.70
0.15/0.35
3.20/3.80
...
0.20/0.30
4817 H
0.14/0.20
0.30/0.70
0.15/0.35
3.20/3.80
...
0.20/0.30
4820 H
0.17/0.23
0.40/0.80
0.15/0.35
3.20/3.80
...
0.20/0.30
50B40 H
C
0.37/0.44
0.65/1.10
0.15/0.35
...
0.30/0.70
...
50B44 H
C
0.42/0.49
0.65/1.10
0.15/0.35
...
0.30/0.70
...
26
ALLOY STEEL GRADES SUBJECT TO END QUENCH HARDENABILITY REQUIREMENTS
(ASTM A 304 – 05)
Steel Grade
Chemical Composition Ranges and Limits, PercentA
C
Mn
Si
Ni
Cr
Mo
5046 H
0.43/0.50
0.65/1.10
0.15/0.35
...
0.13/0.43
...
50B46 HC
0.43/0.50
0.65/1.10
0.15/0.35
...
0.13/0.43
...
50B50 H
C
0.47/0.54
0.65/1.10
0.15/0.35
...
0.30/0.70
...
50B60 H
C
0.55/0.65
0.65/1.10
0.15/0.35
...
0.30/0.70
...
5120 H
0.17/0.23
0.60/1.00
0.15/0.35
...
0.60/1.00
...
5130 H
0.27/0.33
0.60/1.00
0.15/0.35
...
0.75/1.20
...
5132 H
0.29/0.35
0.50/0.90
0.15/0.35
...
0.65/1.10
...
5135 H
0.32/0.38
0.50/0.90
0.15/0.35
...
0.70/1.15
...
5140 H
0.37/0.44
0.60/1.00
0.15/0.35
...
0.60/1.00
...
5145 H
0.42/0.49
0.60/1.00
0.15/0.35
...
0.60/1.00
...
5147 H
0.45/0.52
0.60/1.05
0.15/0.35
...
0.80/1.25
...
5150 H
0.47/0.54
0.60/1.00
0.15/0.35
...
0.60/1.00
...
5155 H
0.50/0.60
0.60/1.00
0.15/0.35
...
0.60/1.00
...
5160 H
0.55/0.65
0.65/1.10
0.15/0.35
...
0.60/1.00
...
51B60 H
C
0.55/0.65
0.65/1.10
0.15/0.35
...
0.60/1.00
...
6118 H
D
0.15/0.21
0.40/0.80
0.15/0.35
...
0.40/0.80
...
6150 H
E
0.47/0.54
0.60/1.00
0.15/0.35
...
0.75/1.20
...
27
ALLOY STEEL GRADES SUBJECT TO END QUENCH HARDENABILITY REQUIREMENTS
(ASTM A 304 – 05)
Steel Grade
Chemical Composition Ranges and Limits, PercentA
C
Mn
Si
Ni
Cr
Mo
81B45 H
C
0.42/0.49
0.70/1.05
0.15/0.35
0.15/0.45
0.30/0.60
0.08/0.15
8617 H
0.14/0.20
0.60/0.95
0.15/0.35
0.35/0.75
0.35/0.65
0.15/0.25
8620 H
0.17/0.23
0.60/0.95
0.15/0.35
0.35/0.75
0.35/0.65
0.15/0.25
8622 H
0.19/0.25
0.60/0.95
0.15/0.35
0.35/0.75
0.35/0.65
0.15/0.25
8625 H
0.22/0.28
0.60/0.95
0.15/0.35
0.35/0.75
0.35/0.65
0.15/0.25
8627 H
0.24/0.30
0.60/0.95
0.15/0.35
0.35/0.75
0.35/0.65
0.15/0.25
8630 H
0.27/0.33
0.60/0.95
0.15/0.35
0.35/0.75
0.35/0.65
0.15/0.25
86B30 H
C
0.27/0.33
0.60/0.95
0.15/0.35
0.35/0.75
0.35/0.65
0.15/0.25
8637 H
0.34/0.41
0.70/1.05
0.15/0.35
0.35/0.75
0.35/0.65
0.15/0.25
8640 H
0.37/0.44
0.70/1.05
0.15/0.35
0.35/0.75
0.35/0.65
0.15/0.25
8642 H
0.39/0.46
0.70/1.05
0.15/0.35
0.35/0.75
0.35/0.65
0.15/0.25
8645 H
0.42/0.49
0.70/1.05
0.15/0.35
0.35/0.75
0.35/0.65
0.15/0.25
86B45 H
C
0.42/0.49
0.70/1.05
0.15/0.35
0.35/0.75
0.35/0.65
0.15/0.25
8650 H
0.47/0.54
0.70/1.05
0.15/0.35
0.35/0.75
0.35/0.65
0.15/0.25
8655 H
0.50/0.60
0.70/1.05
0.15/0.35
0.35/0.75
0.35/0.65
0.15/0.25
8660 H
0.55/0.65
0.70/1.05
0.15/0.35
0.35/0.75
0.35/0.65
0.15/0.25
8720 H
0.17/0.23
0.60/0.95
0.15/0.35
0.35/0.75
0.35/0.65
0.20/0.30
28
ALLOY STEEL GRADES SUBJECT TO END QUENCH HARDENABILITY REQUIREMENTS
(ASTM A 304 – 05)
Steel Grade
Chemical Composition Ranges and Limits, PercentA
C
Mn
Si
Ni
Cr
Mo
8740 H
0.37/0.44
0.70/1.05
0.15/0.35
0.35/0.75
0.35/0.65
0.20/0.30
8822 H
0.19/0.25
0.70/1.05
0.15/0.35
0.35/0.75
0.35/0.65
0.30/0.40
9260 H
0.55/0.65
0.65/1.10
1.70/2.20
...
...
...
9310 H
0.07/0.13
0.40/0.70
0.15/0.35
2.95/3.55
1.00/1.45
0.08/0.15
94B15 H
C
0.12/0.18
0.70/1.05
0.15/0.35
0.25/0.65
0.25/0.55
0.08/0.15
94B17 H
C
0.14/0.20
0.70/1.05
0.15/0.35
0.25/0.65
0.25/0.55
0.08/0.15
94B30 H
C
0.27/0.33
0.70/1.05
0.15/0.35
0.25/0.65
0.25/0.55
0.08/0.15
A P and S in open-hearth steel is 0.035% and 0.040% respectively, while the P and S in electric furnace steel is 0.025% max (Grade preceded by an ‘E’).
B S range is 0.035 to 0.050%.
C These steels can be expected to have a 0.0005% minimum B content.
D V range is 0.10 to 0.15%.
E Minimum V content is 0.15%.
29
STEEL GRADES SUBJECT TO RESTRICTED END QUENCH HARDENABILITY REQUIREMENTS
(ASTM A 914/A 914M – 92; Reapproved 2005)
Steel Grade
Chemical Composition Ranges and Limits, PercentA
C
Mn
Si
Ni
Cr
Mo
15B21 RH
B
0.17/0.22
0.80/1.10
0.15/0.35
...
...
...
15B35 RH
B
0.33/0.38
0.80/1.10
0.15/0.35
...
...
...
3310 RH
0.08/0.13
0.40/0.60
0.15/0.35
3.25/3.75
1.40/1.75
...
4027 RH
0.25/0.30
0.70/0.90
0.15/0.35
...
...
0.20/0.30
4118 RH
0.18/0.23
0.70/0.90
0.15/0.35
...
0.40/0.60
0.08/0.15
4120 RH
0.18/0.23
0.90/1.20
0.15/0.35
...
0.40/0.60
0.13/0.20
4130 RH
0.28/0.33
0.40/0.60
0.15/0.35
...
0.80/1.10
0.15/0.25
4140 RH
0.38/0.43
0.75/1.00
0.15/0.35
...
0.80/1.10
0.15/0.25
4145 RH
0.43/0.48
0.75/1.00
0.15/0.35
...
0.80/1.10
0.15/0.25
4161 RH
0.56/0.64
0.75/1.00
0.15/0.35
...
0.70/0.90
0.25/0.35
4320 RH
0.17/0.22
0.45/0.65
0.15/0.35
1.65/2.00
0.40/0.60
0.20/0.30
4620 RH
0.17/0.22
0.45/0.65
0.15/0.35
1.65/2.00
...
0.20/0.30
4820 RH
0.18/0.23
0.50/0.70
0.15/0.35
3.25/3.75
...
0.20/0.30
50B40 RH
B
0.38/0.43
0.75/1.00
0.15/0.35
...
0.40/0.60
...
5130 RH
0.28/0.33
0.70/0.90
0.15/0.35
...
0.80/1.10
...
5140 RH
0.38/0.43
0.70/0.90
0.15/0.35
...
0.70/0.90
...
5160 RH
0.56/0.64
0.75/1.00
0.15/0.35
...
0.70/0.90
...
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