FeCrAl alloy 0Cr27Al7Mo2 CrAl high temperature resistance Alloy Resistance Wire
FeCrAl alloy is high resistancec and electrical heating alloy. Fecral alloy can reach process temperature of 2192 to 2282 F,corresponding to a resistance temperature of 2372F.
In order to improve anti-oxidation ability and increase working life, we usually put addition of rare earths in the alloy, such as La+Ce,Yttrium, Hafnium,Zirconium,etc.
It is normally used in electrical furnace, glass top hobs,quartz tube heaters, resistors,catalytic converter,heating elements etc.
0Cr27Al7Mo2 Nominal Analysis
27.00 Cr, 7.00 Al, 2.00 Mo, Bal. Fe
Max contineous working temperature: 1400 C.
Wire diameter: 0.5~12mm
Melting Temperature: 1520 C
Electrical Resistivity: 1.53 ohm mm2/m
Has been used extensively as heating elements in industrial furnaces and electrical kilns.
Has less hot strength than Tophet alloys but much higher melting point.
Shanghai TANKII ALLOY MATERIAL Co., Ltd.
| Chemical Composition and Main Property of Fe-Cr-Al Resistance Alloy | ||||||||
| Properties \ Grade | 1Cr13Al4 | 0Cr25Al5 | 0Cr21Al6 | 0Cr23Al5 | 0Cr21Al4 | 0Cr21Al6Nb | 0Cr27Al7Mo2 | |
| Main Chemical Composition (%) |
Cr | 12.0-15.0 | 23.0-26.0 | 19.0-22.0 | 22.5-24.5 | 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 | 4.2-5.0 | 3.0-4.2 | 5.0-7.0 | 6.0-7.0 | |
| Re | opportune | opportune | opportune | opportune | opportune | opportune | opportune | |
| Fe | Bal. | Bal. | Bal. | Bal. | Bal. | Bal. | Bal. | |
| Nb0.5 | Mo1.8-2.2 | |||||||
| Max Continuous Service Temperature(oC) | 950 | 1250 | 1250 | 1250 | 1100 | 1350 | 1400 | |
| Resisivity 20oC (Ω mm2/m) | 1.25 ± 0.08 |
1.42 ± 0.06 |
1.42 ± 0.07 |
1.35 ± 0.07 |
1.23 ± 0.07 |
1.45 ± 0.07 |
1.53 ± 0.07 |
|
| Density(g/cm3) | 7.4 | 7.1 | 7.16 | 7.25 | 7.35 | 7.1 | 7.1 | |
| Thermal Conductivity | 52.7 | 46.1 | 63.2 | 60.2 | 46.9 | 46.1 | 45.2 | |
| (KJ/m@ h@ oC) | ||||||||
| Coefficient of Thermal Expansion(α × 10-6/oC) | 15.4 | 16 | 14.7 | 15 | 13.5 | 16 | 16 | |
| Approximate Melting Point( 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(%) | > 16 | > 12 | > 12 | > 12 | > 12 | > 12 | > 10 | |
| Section Variation | 65-75 | 60-75 | 65-75 | 65-75 | 65-75 | 65-75 | 65-75 | |
| Shrink Rate (%) | ||||||||
| Repeatedly Bend 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 | no | ≥ 80/1300 | ≥ 80/1300 | ≥ 80/1300 | ≥ 80/1250 | ≥ 50/1350 | ≥ 50/1350 | |
| Micrographic Structure | Ferrite | Ferrite | Ferrite | Ferrite | Ferrite | Ferrite | Ferrite | |
| Magnetic Property | Magnetic | Magnetic | Magnetic | Magnetic | Magnetic | Magnetic | Magnetic | |
