Omega Products NI80-012-200 User Manual

Resistance Heating Wire
Nickel-Chromium Alloy

80% Nickel /20% Chromium

U Withstands High
Temperatures up to
1150°C (2100°F)

U Quick Heating, Long Life
U Corrosion Resistant
U Used to Make Straight

or Helical Coil
Resistance Heaters

U Convenient 15 m (50') and
60 m (200') Spools Available

OMEGA® NIC80 wire is a resistance
heating wire comprised of 80%
Nickel and 20% Chromium. NIC80
wire is commonly used as a resistor
at elevated temperatures.
NI/CR-80/20 is essential for resistor
elements in high temperature
applications such as electric
furnaces, electric ranges and radiant
heaters operating at temperatures
up to 1150°C (2100°F).

In addition to these qualities
and standard uses, it has found
wide application in technical
applications due to its combination
of high electrical resistance and its
temperature coefficient of
resistance much less than that of
Nickel-Chrome 60.

Specifications

Composition: 80% Ni, 20% Cr
Specific Resistance:

650 Ω per circular mil-foot at 20°C
(68°F). See table below for multiplication
factors to obtain resistance at other
temperatures.

Specific Gravity: 8.41
Density: 0.304 lb/in

3

Shown smaller
than actual size.

Melting Point: Approx

1400°C (2550°F)

Nominal Coefficient of Linear
Expansion: 0.000017 (10 to 1000°C)

Tensile Strength (lb/in
20°C (68°F):
Soft Annealed: 100,000

Nominal Temperature
Coefficient of Resistance:

0.00011 Ω/Ω/°C (20 to 500°C)

2

) at

Factor by Which Resistance at Room Temperature Is to Be Multiplied to Obtain Resistance at Indicated Temperatures

(These figures are given as a basis for engineering calculations and represent average material as supplied.)

Temp °C 20 93 204 315 427 538 649 760 871 982 1093°C

Temp ° F 68 200 400 600 800 1000 1200 1400 1600 1800 2000°F

Factor 1.000 1.016 1.037 1.054 1.066 1.070 1.064 1.062 1.066 1.072 1.078

To Order Visit omega.com/ni80 for Pricing and Details

Current Temperature Characteristics* °C (°F)
Dia. Ω per ft 425 550 650 750 875 1100

AWG mm (1") @ 20°C (68°F) (800) (1000) (1200) (1400) (1600) (2000) Model No.

18 1.0 (0.040) 0.4062 8.32 10.17 12.48 15.11 18.06 24.03 NI80-040-(
20 0.81 (0.032) 0.6348 6.17 7.56 9.24 11.13 13.23 17.57 NI80-032-(†)
22 0.64 (0.0253) 1.015 4.62 5.62 6.85 8.20 9.69 12.85 NI80-025-(†)
24 0.51 (0.0201) 1.609 3.46 4.18 5.06 6.04 7.10 9.40 NI80-020-(†)
26 0.40 (0.0159) 2.571 2.62 3.12 3.76 4.49 5.27 6.90 NI80-015-(†)
28 0.32 (0.0126) 4.094 1.98 2.38 2.84 3.37 3.93 5.09 NI80-012-(†)
30 0.25 (0.010) 6.50 1.50 1.81 2.14 2.53 2.93 3.75 NI80-010-(†)

Showing approximate amperes necessary to produce a given temperature, applying only to a straight wire stretched horizontally in free air.

*

† Specify desired length in feet: “50” or “200”. Note: This wire is not intended for use in making thermocouple elements.
Ordering Example: NI80-032-50 is a 15 m (50') spool of 20 gage bare wire.

Note: Published prices are based on market value at time of printing and are subject to change due to

Nickel surcharges, Chromium and precious-metal market fluctuations.

†

)

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