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BRADY B-427 THERMAL TRANSFER PRINTABLE TRANSLUCENT VINYL TAPE
TDS No. B-427
Effective Date: 08-Jul-2008
GENERAL
Print Technology: Thermal Transfer
Material Type: Translucent vinyl
Finish: Provided in a self-laminated format with a white printable zone and a translucent
overlaminating area.
Adhesive: Permanent acrylic
APPLICATIONS
B-427 is an excellent material for wire and cable identification. This material has good clarity,
conformability and is self-extinguishing. B-427 has outstanding water and oil resistance.
RECOMMENDED RIBBONS
Brady Series R4300 black and R4500 colored (red, blue, green) for thermal transfer printing.
REGULATORY/AGENCY APPROVALS
B-427 is UL Recognized to UL969 Labeling and Marking Standard when printed with the Brady
Series R4300 and R6200 ribbons. See UL files MH17154 for specific details.
B-427 is RoHS compliant to 2005/618/EC MCV amendment to RoHS Directive 2002/95/EC.
with RoHS compliance statement on product packaging are RoHS compliant.
Thickness ASTM D 1000
Adhesion to:
-Stainless Steel
-Polypropylene
Tack ASTM D 2979
Drop Shear PSTC-7 (except use 1/2" x 1"
Tensile Strength and Elongation ASTM D 1000
Flammability ASTM D 1000
Performance properties tested with white printable zone of B-427 printed with Brady Series R4300
black thermal transfer ribbon. Samples wrapped around 0.080” OD TFE wire in a self-laminating
format.
High Service Temperature 30 days at 158°F (70°C) Slight discoloration. No visible
Low Service Temperature 30 days at -40°F (-40°C) No visible effect
Humidity Resistance 30 days at 100°F (37°C), 95%
Weatherability ASTM G 155, Cycle 1 No visible effect
PHYSICAL PROPERTIES TEST METHODS AVERAGE RESULTS
PERFORMANCE
PROPERTIES
-Total Thickness
ASTM D 1000
20 minute dwell
24 hour dwell
20 minute dwell
24 hour dwell
Polyken™ Probe Tack
(1 second dwell, 1 cm/sec
separation)
sample)
-Machine
-Cross
Average Burn Time
TEST METHODS TYPICAL RESULTS
R.H.
0.0040 inch (0.102 mm)
38 oz/in (42 N/100 mm)
49 oz/in (54 N/100 mm)
25 oz/in (28 N/100 mm)
33 oz/in (36 N/100 mm)
13.3 oz (378 g)
3.3 hours
12 lbs/in (210 N/100 mm), 152%
11 lbs/in (193 N/100 mm), 195%
ABT less than 10 seconds
effect at 140°F (60°C)
No visible effect

30 days in Xenon Arc
connection with the use of this information.
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Weatherometer
PERFORMANCE PROPERTIES CHEMICAL RESISTANCE
White printable zone of B-427 was printed with Brady Series R4300 black thermal transfer ribbon.
Samples wrapped around 0.080” OD TFE wire in a self-laminating format. Except where noted,
testing was conducted at room temperature after 24 hour dwell. Testing consisted of 5 cycles of a
10 minute immersion in the specified test fluid followed by a 30 minute recovery period.
CHEMICAL REAGENT SUBJECTIVE OBSERVATION OF VISUAL CHANGE
SUBSTRATE/ADHESIVE SERIES R4300 RIBBON
Cleaners and Solvents
Isopropyl Alcohol No visible effect No visible effect
Mineral Spirits No visible effect No visible effect
Northwoods™ Buzz Saw
Terpene Cleaner
Formula 409® No visible effect No visible effect
Deionized Water No visible effect No visible effect
Fuels, Oils and Lubricants
Gasoline Moderate unwrap No visible effect
Brake Fluid No visible effect No visible effect
SAE 30 WT Oil at 70°C No visible effect No visible effect
Yellow 77® Wire Pulling
Lubricant
Deionized Water No visible effect No visible effect
Aerospace Related Fluids
JP-8 Jet Fuel No visible effect No visible effect
Skydrol® 500B-4 Material destroyed NA
MIL-H- 5606 Oil No visible effect No visible effect
B-427 is not recommended for use in harsh organic solvents such as methyl ethyl ketone, acetone,
or 1,1,1-trichloroethane.
Product testing, customer feedback, and history of similar products, support a
expectation of at least two years from the date of receipt for this product as long as
stored in its original packaging in an environment below 80 degrees F and 60% RH . We are
confident that our product will perform well beyond this time frame. However, it remains the
responsibility of the user to assess the risk of using such product. We encourage customers to
develop functional testing protocols that will qualify a product's fitness for use, in their actual
applications.
No visible effect No visible effect
No visible effect No visible effect
ASTM: American Society for Testing and Materials (U.S.A.)
Formula 409® is a registered trademark of the Chlorox Company
Northwoods™ is a trademark of the Superior Chemical Corporation
PSTC: Pressure Sensitive Tape Council (U.S.A.)
Polyken™ is a trademark of Testing Machines Inc.
SAE: Society of Automotive Engineers (U.S.A.)
Skydrol® is a registered trademark of the Monsanto Company
UL: Underwriters Laboratories Inc. (U.S.A.)
Yellow 77® is a registered trademark of Ideal Industries, Inc.
All values shown are averages and should not be used for specification purposes.
Test data and test results contained in this document are for general information only and shall not
be relied upon by Brady customers for designs and specifications, or be relied on as meeting
specified performance criteria. Customers desiring to develop specifications or performance criteria
for specific product applications should contact Brady for further information.
Product compliance information is based upon information provided by suppliers of the raw
materials used by Brady to manufacture this product or based on results of
analytical methods performed by a third party, independent laboratory. As such, Brady makes no
independent representations or warranties, express or implied, and assumes no liability in
WARRANTY
Brady products are sold with the understanding that the buyers will test them in actual use and
determine for themselves their adaptability to their intended uses. Brady warrants to the buyers that
its products are free from defects in material and workmanship, but limits its obligation under this