Project Description

6J20

6J20 is a nickel-chromium resistance alloy for operating temperatures up to 1200℃. It has highly corrosion resistance and lower coefficient of resistance than other heater element alloys. Nichrome 80 is the most ideal resistance heating alloy.

Equivalent Grades

TrademarksGBJISKSASTMUNSDINW.NrGOSTBSNFSS
Nikrothal 80
Nichrome 80
Nichrome V
Chromel A
Tophet A
Resistohm 80
Stablohm 650
MWS 650
Gilphy 80
N8
Cr20Ni80NCHW1
NCHRW1
Nichrome 80
NiCr80 20
N06003NiCr 80 202.4869Х20Н80
Х20Н80-Н

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, %

CSiMnPSCrNiAlFe
≤0.080.75~1.60≤0.60≤0.02≤0.01520.0~23.0Bal≤0.50≤1.0

Note: Х20Н80-Н (Add Zr:0.2-0.5%)

Mechanical Properties (Annealed)

Tensile Strength, Rm/MPaElongation, A/%
Dia. >3.00mm (for wire)Dia. 0.10~3.00mm (for wire) and Th. >0.20 (for strip)
≥650≥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
120014008.41.090.4460.318.0AustenitieNon-Magnetic

Life Test

Test Temperature, ℃Continuous Service Time Hours, ℃
1200≥80

Temperature Factor of Resistivity

20℃100℃200℃300℃400℃500℃600℃700℃800℃900℃1000℃1100℃1200℃1300℃
1.0001.0061.0121.0181.0251.0261.0181.0101.0081.0101.0141.0211.025

Features

  • Great ductility
  • Excellent workability and weldability under high temperature
  • High and stable resistivity
  • Surface oxidation resistance
  • Sufficient high temperature strength
  • Working temperature up 1200℃

Applications

Nichrome 80 is used for electric heating elements in home appliances and industrial furnaces.

  • Electrical parts and electronic components
  • Electric heating elements (home & industrial use)
  • Industrial furnaces up to 1200℃
  • Heating cables, mats and cords
  • Flat irons
  • Ironing machines
  • Water heaters
  • Plastic moulding dies
  • Soldering irons
  • Metal sheathed tubular elements and cartridge elements

Based on client’s requirement, we have succeeded in producing Х20Н80-Н. Through adding Zr element around 0.2-0.5%, it can increase alloy working temperature, and strength. It is mostly used in high temperature industry furnace.