Project Description

0Cr21Al6Nb

0Cr21Al6Nb is an iron-chromium-aluminium alloy (FeCrAl alloy) for use at temperatures up to 1350℃.

Equivalent Grades

TrademarksGBJISASTMUNSDINW-Nr.ГОСТBSNFSS
Kanthal A-1
Alloy 875
Resistohm 145
MWS 875
Stablohm 875
0Cr21Al6Nb

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, %

AlloyCSiMnPSCrNiAlNbFe
0Cr21Al6Nb≤0.05≤0.60≤0.70≤0.025≤0.02521.0~23.0≤0.605.0~7.0*0.5Bal

Mechanical Properties (RT, Annealed)

Tensile Strength, Rm/MPaElongation, A/%Hardness, HB
Dia. >3.00mm (for wire)Dia. 0.10~3.00mm (for wire) and Th. >0.20 (for strip)
≥680≥12≥10200~260

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
135015107.101.430.49446.116.0FerriticMagnetic

Life Test

Test Temperature, ℃Continuous Service Time Hours, ℃
1350≥50

Temperature Factor of Resistivity

20℃100℃200℃300℃400℃500℃600℃700℃800℃900℃1000℃1100℃1200℃1300℃
1.0000.9920.9960.9940.9910.9900.9900.9900.9900.9900.9900.9900.9900.990

Features

  • High resistivity
  • Excellent oxidation resistance
  • Low temperature coefficient of electric resistance
  • High operating temperature
  • Excellent oxidation resistance under high temperature

Applications

  • Electrical heating elements in high-temperature furnaces for heat treatment, ceramics, glass, steel, and electronics industries