Project Description

0Cr21Al6

0Cr21Al6 is an iron-chromium-aluminium alloy (FeCrAl alloy) for use at temperatures up to 1250℃.

Equivalent Grades

TrademarksGBJISASTMUNSDINW-Nr.ГОСТBSNFSS
Kanthal A0Cr21Al6Ⅰ–CrAl20 51.4767––––

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
0Cr21Al6≤0.06≤1.00≤0.70≤0.025≤0.02519.0~22.0≤0.605.0~7.0Bal

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)
≥600≥15≥12200~260

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
125015007.161.420.52063.214.7FerriticMagnetic

Life Test

Test Temperature, ℃Continuous Service Time Hours, ℃
1300≥80

Temperature Factor of Resistivity

20℃100℃200℃300℃400℃500℃600℃700℃800℃900℃1000℃1100℃1200℃1300℃
1.0001.0001.0021.0061.0111.0201.0371.0431.0461.0491.0521.0551.058–

Features

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

Applications

0Cr21Al6 is typically used in industrial furnaces and home appliances.

  • Panel heaters
  • Infrared heaters
  • Warming plates
  • Irons
  • Ceramic pots
  • Cartridge heaters for liquid heating
  • Storage heaters
  • Ceramic heaters for cooking plates
  • Air guns
  • Hobby kilns
  • Radiators
  • Quartz tube heaters for space heating
  • Toasters
  • Toaster ovens
  • Grills
  • Industrial infrared dryers
  • Coils on molded ceramic fibre for cooking plates with ceramic hobs