China Fecral 0cr21al6nb Resistance Strip

FeCrAl Alloy Wire-0Cr21Al6Nb
1. General Description
FeCrAl alloy is made by a high-temperature, ferritic iron-chromium-aluminium alloy which can be used at temperatures up to 1350degrees. Typical applications for 0Cr21Al6Nb are as electrical heating elements in high-temperature furnaces in the heat treating, ceramics, glass, steel, and electronics industries.
2. Chemical Composition
0Cr21Al6Nb Cr: 21.0-23.0% Al: 5.0-7.0% Fe: Balance Nb: Opportune 0.5
Adequacy 0.5
3. Properties
Alloy Specific Resistance (at 20° Cµ Ω -m): 1.45+-0.07
Hardness: 200-260
Linear Expansion Coeff. (T=20-1000degrees): 16.0x10-6
Melting Point: 1510
Max ContinuousService Temperance: 1350
4. Sizes:
Wire diameter: 0.15mm-8.0mm
Strip:
1). Electric ceramic cooktop resistance strip:
Thickness: 0.04mm-1.0mm
Width: 5mm-12mm
Thickness&Width: (0.04mm-1.0mm)x 12mm(above)
2). Low resistance ribbon:
Thickness&Width: (0.2mm-1.5mm)*5mm
3). Industrial furnace ribbon:
Thickness: 1.5mm-3.0mm
Width: 10mm-30mm

The allowable tolerance of alloy strip GB/T1234-2012
CategoryThickness ( mm )Tolerance ( mm)
Common precisionHigh precision
Cold-rolled strip0.05 ~ 0.1±0.01±0.005
0.1 ~ 0.2±0.015±0.01
0.2 ~ 0.5±0.02±0.015
0.5 ~ 1.0±0.03±0.025
1.0 ~ 1.8±0.04±0.03
1.8 ~ 2.5±0.05±0.04
2.5 ~ 4.0±0.06±0.05
Hot-rolled Strip2.5 ~ 5.0±0.25±0.2
5.0 ~ 7.0±0.3±0.25
7.0 ~ 10.0±0.4±0.35
10.0 ~ 20.0±0.5±0.45


The allowable tolerance of alloy strip GB/T1234-2012CategoryWidth ( mm )Tolerance ( mm )side cutNonside cutCommon precisionHigh precision Cold-rolled Strip5.0 ~ 10.0±0.2±0.1-0.610.0 ~ 20.0-0.820.0 ~ 30.0-130.0 ~ 50.0±0.3±0.15-1.250.0 ~ 100.0±1.0100.0 ~ 200.0±0.5±0.25±1.5200.0 ~ 300.0±1.8Hot-rolled Strip15.0 ~ 60.0/±1.560.0 ~ 200.0±2.5200.0 ~ 300.0±3.0

Properties/Grade0Cr21Al6NbMain Chemical composition(%)Cr21.0-23.0Al5.0-7.0FeBalanceReopportune
Nb: 0.5 Max. continuous service temp. of element1350Resistivity at 20oC (μΩ@m)1.45+-0.07Density (g/cm3)7.1Thermal conductivity(KJ/m@h@oC)46.1Coefficient of lines expansion(αx10-6/oC)16Melting point (approx.)( oC)1510Elongation at rupture (%)≥ 12Micrographic structureFerriteMagnetic propertiesmagnetic