Iron Chrome Aluminum Resistance Alloys
Iron Chrome Aluminum (FeCrAl) alloys are high-resistance materials typically used in applications with maximum operating temperatures up to 1,400°C (2,550°F).
These Ferritic alloys are known to have higher surface loading capability, higher resistivity and lower density than Nickel Chrome (NiCr) alternatives which can translate to less material in application and weight savings. The higher maximum operating temperatures can also lead to longer element life. Iron Chrome Aluminum alloys form a light grey Aluminum Oxide (Al2O3) at temperatures above 1,000°C (1,832°F) which increases corrosion resistance as well as acts as an electrical insulator. The oxide formation is considered self-insulating and protects against short circuiting in the event of metal to metal contact. Iron Chrome Aluminum alloys have lower mechanical strength when compared to Nickel Chrome materials as well as lower creep strength.
Specification of Cold-drawing Round Type heating wire
|
Diameter(mm) |
Tolerance(mm) |
Diameter(mm) |
Tolerance(mm) |
|
0.03-0.05 |
±0.005 |
>0.50-1.00 |
±0.02 |
|
>0.05-0.10 |
±0.006 |
>1.00-3.00 |
±0.03 |
|
>0.10-0.20 |
±0.008 |
>3.00-6.00 |
±0.04 |
|
>0.20-0.30 |
±0.010 |
>6.00-8.00 |
±0.05 |
|
>0.30-0.50 |
±0.015 |
>8.00-12.0 |
±0.4 |
Specification of Cold-drawing Strip Type heating wire
|
Thickness(mm) |
Tolerance(mm) |
Width(mm) |
Tolerance(mm) |
|
0.05-0.10 |
±0.010 |
5.00-10.0 |
±0.2 |
|
>0.10-0.20 |
±0.015 |
>10.0-20.0 |
±0.2 |
|
>0.20-0.50 |
±0.020 |
>20.0-30.0 |
±0.2 |
|
>0.50-1.00 |
±0.030 |
>30.0-50.0 |
±0.3 |
|
>1.00-1.80 |
±0.040 |
>50.0-90.0 |
±0.3 |
|
>1.80-2.50 |
±0.050 |
>90.0-120.0 |
±0.5 |
|
>2.50-3.50 |
±0.060 |
>120.0-250.0 |
±0.6 |
|
Alloy Type |
Diameter |
Resistivity |
Tensile |
Elongation(%) |
Bending |
Max.Continuous |
Working Life |
|
1Cr13Al4 |
0.03-12.0 |
1.25±0.08 |
588-735 |
>16 |
>6 |
950 |
>10000 |
|
0Cr15Al5 |
1.25±0.08 |
588-735 |
>16 |
>6 |
1000 |
>10000 |
|
|
0Cr25Al5 |
1.42±0.07 |
634-784 |
>12 |
>5 |
1300 |
>8000 |
|
|
0Cr23Al5 |
1.35±0.06 |
634-784 |
>12 |
>5 |
1250 |
>8000 |
|
|
0Cr21Al6 |
1.42±0.07 |
634-784 |
>12 |
>5 |
1300 |
>8000 |
|
|
1Cr20Al3 |
1.23±0.06 |
634-784 |
>12 |
>5 |
1100 |
>8000 |
|
|
0Cr21Al6Nb |
1.45±0.07 |
634-784 |
>12 |
>5 |
1350 |
>8000 |
|
|
0Cr27Al7Mo2 |
0.03-12.0 |
1.53±0.07 |
686-784 |
>12 |
>5 |
1400 |
>8000 |
