Oxidation Resistant FeCrAl Alloy Flat Wire with 1250 ℃ Maximum Temperature and Bright Surface for Electric Heater Components
Resistohm 145 or FeCrAl 145 is a ferritic alloy of the FeCrAl family, which can be used up to 1300°C in case of big diameters.
Resistohm 145 or FeCrAl 145 can be used for resistances in electric furnaces for ceramic, chemical and metallurgic industries, and for all applications where it is necessary to apply very high temperature of use. Life time of Resistohm 145 is better than those of NiCr in case of atmospheres containing sulfur and particularly if they are oxidizing.
The same material in China is 0Cr21Al6Nb which with the same resistivity of 1.45μΩ/m at 20ºC.
Resistance heating strip for furnace heating elements and other heat-generating applications. The strip is normally delivered in cold-rolled condition with ground surface.
Characters:
1. Excellent form stability
2. Excellent corrosion resistance in most atmospheres
3. High thermal conductivity
4. No scaling and impurities
5. Longer tube life
Iron-chromium-aluminium alloys (FeCrAl alloys) available as complete ready-to-install assemblies according to almost any customer specification.
We also produce below grades:
Alloy 750, Alferon 902, Alchrome 750, Resistohm 125, Aluchrom, 750 Alloy, Stablohm 750
A1, Alloy 875, Resistohm 145, Aluchrom 0, Alchrome 875, MWS-875, Stablohm 875, KAF, AF, Resistohm Y, Aluchrom Y, Alloy 837, AF KAPM KAPM, Alloy 875 PM, APM
D, Alloy 815, Alchrome DK, Alferon 901, Resistohm 135, Aluchrom S, Stablohm 812
| 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 (Ωmm2/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 | |
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