Project Description

Nichrome 40

Nichrome 40 is an austenitic nickel-chromium alloy for use at temperatures up to 1100℃.

Equivalent Grades

TrademarksGBJISASTMUNSDINW-Nr.ГОСТBSNFSS
Nikrothal 40
Nichrome 40
Chromel D
Tophet D
Resistohm 40
Stablohm 610
MWS 610
Gilphy 40
N40
Cr20Ni35NCHW3
NCHRW3
Nichrome 40
35Ni-20Cr

Specifications

GB/T 1234-1995 (CN); JIS C2520-199(JP); ASTM B344-01(USA); DIN 17470-1984(GER); GOST 10994 & GOST 12766/1-1990 (RU)

Product Forms

Wire, Bar, Strip, Sheet, Plate, Tube, Mesh, Conveyor belt, Radiant tube heater

Chemical Composition, %

AlloyCSiMnPSCrNiAlFe
Nichrome 40≤0.081.0~3.0≤1.0≤0.02≤0.01518.0~21.034.0~37.0Bal

Mechanical Properties (RT, Annealed)

Tensile Strength, Rm/MPaElongation, A/%
Dia. >3.00mm (for wire)Dia. 0.10~3.00mm (for wire) and Th. >0.20 (for strip)
≥600≥25≥20

Physical Properties

Max Working Temperature, ℃Melting Point, ℃Density, g/cm3Resistivity, μΩ·m, 20℃Specific Heat, J/g·℃Thermal Conductivity, KJ/m·h·℃Average Coefficient of Linear Expansion, α×10-6/℃ (20~1000℃)Micrographic StructureMagnetic Properties
110013907.901.040.50043.819.0AustenitieWeak-Magnetic

Life Test

Test Temperature, ℃Continuous Service Time Hours, ℃
1100≥80

Temperature Factor of Resistivity

20℃100℃200℃300℃400℃500℃600℃700℃800℃900℃1000℃1100℃1200℃1300℃
1.0001.0291.0611.0901.1151.1391.1571.1731.1881.2081.2191.228

Features

  • High resistivity
  • Good oxidation resistance
  • Good form stability
  • Good ductility after using
  • Excellent weldability

Applications

  • Nigh-storage heaters
  • Convection heaters
  • Heavy duty rheostats
  • Fan heaters
  • Heating cables and rope heaters in defrosting and deicing elements
  • Electric blankets and pads
  • Car seats
  • Baseboard heaters
  • Floor heaters
  • Resistors
  • Heating elements in furnace for working temperature up to 1000℃