Project Description

0Cr27Al7Mo2

0Cr27Al7Mo2 is a kind of super high temperature resistance heating alloy, this ferric Fe-Cr-Al alloy’s working temperature up to 1400℃. This alloy is almost equal to Х27Ю5Т (GOST). It is widely made into spiral heating spring used in the high temperature heat treatment furnace, and it can be made heating elements used in the electric radiant tube heater.

Equivalent Grades

TrademarkGBGOSTASTMUNSDINW.Nr.NFBSJISSS
0Cr27Al7Mo2Х27Ю5Т

Chemical Composition, %

AlloyCSiMnPSCrNiAlMoFe
0Cr27Al7Mo2≤0.05≤0.40≤0.20≤0.025≤0.02026.5-27.8≤0.606.0-7.01.8-2.2Bal

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)
≥680≥10≥10

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
140015207.101.530.491316.0FerriteMagnetic

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℃
1.0000.9920.9860.9810.9780.9760.9740.9720.9700.9690.9680.9680.9670.967

Available Products and Specifications

Rod, Bar, Wire and ForgingsGB/T 1234-2012, GOST 12766.1-1990, GOST 12766.3-1990, GOST 12766.4-1990, GOST 12766.5-1990
Plate, Sheet and StripGB/T 1234-2012, GOST 12766.2-1990
Pipe and Tube
Welding Product
OthersGOST 10994

Features

  • High resistivity
  • Low temperature coefficient of electric resistance
  • High working temperature
  • Excellent surface oxidation resistance under high temperature as well as in corrosive atmosphere
  • The unique combination of excellent oxidation properties and form stability contributes to long element service life

Applications

  • Heating elements for single crystal diffusion furnaces
  • Powder metallurgy products
  • Sintering furnaces
  • Ceramic calciner
  • High temperature furnace elements up to 1400℃