Project Description

Nichrome 40 (UNS N08330/1.4864)

Nichrome 40 (UNS N08330/1.4864) is an austenitic nickel-chromium alloy for use at temperature up to 1100℃. The alloy is characterized by high resistivity and good oxidation resistance. It has good ductility after use and excellent weldability.

Equivalent Grades

TrademarkGBGOSTASTMUNSDINW.Nr.NFBSJISSS
Nikrothal 40
Resistohm 40
Cr20Ni3535Ni-20CrN083301.4864NCHW3
NCHRW3

Chemical Composition, %

AlloyCSiMnPSCrNiAlFe
Nichrome 40≤0.081.0-3.0≤1.00≤0.020≤0.01518.0-21.034.0-37.0Bal

Mechanical Properties (RT, Annealed)

Tensile Strength, Rm/MPaElongation, A/%
Dia. >3.00mm (Wire)
Thk. >0.20mm (Strip)
Dia. 0.10-3.00mm (Wire)
Thk. ≤0.20mm (Strip)
≥600≥25≥20

Physical Properties

Max Working Temp., Melting Point, Density, g/cm3Resistivity, μΩ·m 20℃Specific Heat, J/(g•K)Thermal Conductivity, W/(m•K) 20℃Average Coefficient of Thermal Expansion,α×10-6/℃ 20-1000℃Micrographic StructureMagnetic Properties
110013907.901.040.501319.0AustenitieNon-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

Available Products and Specifications

Rod, Bar, Wire and ForgingsGB/T 1234-2012, ASTM B344-01, JIS C2520-1999,
Plate, Sheet and StripGB/T 1234-2012, ASTM B344-01, JIS C2520-1999
Pipe and Tube
Welding Product
Others

Features

  • High resistivity
  • Good oxidation resistance
  • Excellent 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℃