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0Cr21Al6

 

Product Description

0Cr21Al6 is one kind of normal material of Fe-Cr-Al  alloy.
FeCrAl alloy has the characteristic of high resistivity,low temperature  resistance coefficient,high operating temperature,good anti-oxidation and anti-corrosion under high temperature.
It is widely used in industrial furnace, household appliances, industry furnace, metallurgy, machinery, aircraft, automotive, military and other industries producing heating elements and resistance elements.
 
Size dimension range:
Ribbons: 0.05*0.2-2.0*6.0mm
Wire: 0.01-10mm
Strip: 0.05*5.0-5.0*250mm
Bar:10-50mm
FeCrAl alloy series: OCr15Al5,1Cr13Al4, 0Cr21Al4, 0Cr21Al6, 0Cr23Al5, 0Cr25Al5, 0Cr21Al6Nb,0Cr27Al7Mo2, and etc.

 

Alloy Nomenclature Performance 1Cr13Al4 0Cr25Al5 0Cr21Al6 0Cr23Al5 0Cr21Al4 0Cr21Al6Nb 0Cr27Al7Mo2
Main Chemical composition Cr 12.0-15.0 23.0-26.0 19.0-22.0 20.5-23.5 18.0-21.0 21.0-23.0 26.5-27.8
Al 4.0-6.0 4.5-6.5 5.0-7.0 4.2-5.3 3.0-4.2 5.0-7.0 6.0-7.0
Re opportune opportune opportune opportune opportune opportune opportune
Fe Rest Rest Rest Rest Rest Rest Rest
            Nb0.5 Mo1.8-2.2
Max. continuous service temp. of element(°C) 950 1250 1250 1250 1100 1350 1400
Resistivity at 20ºC(μΩ·m) 1.25 1.42 1.42 1.35 1.23 1.45 1.53
Density(g/cm3) 7.4 7.1 7.16 7.25 7.35 7.1 7.1
Thermal conductivity(KJ/m·h·ºC) 52.7 46.1 63.2 60.2 46.9 46.1 --
Coefficient of lines expansion(α×10-6/ºC) 15.4 16 14.7 15 13.5 16 16
Melting point approx.( ºC) 1450 1500 1500 1500 1500 1510 1520
Tensile strength(N/mm2) 580-680 630-780 630-780 630-780 600-700 650-800 680-830
Elongation at rupture(%) >16 >12 >12 >12 >12 >12 >10
Variation of area(%) 65-75 60-75 65-75 65-75 65-75 65-75 65-75
Repeat Bending frequency(F/R) >5 >5 >5 >5 >5 >5 >5
Hardness(H.B.) 200-260 200-260 200-260 200-260 200-260 200-260 200-260
continuous service time(Hours/ ºC) -- ≥80/1300 ≥80/1300 ≥80/1300 ≥80/1250 ≥50/1350 ≥50/1350
Micrographic structure Ferrite Ferrite Ferrite Ferrite Ferrite Ferrite Ferrite
Magnetic properties Magnetic Magnetic Magnetic Magnetic Magnetic Magnetic Magnetic

 

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