Resistivity 1.45ohm 0cr21al6nb Fecral A1 Alloy Resistance Heating Strip for Furnace
Resistivity 1.45ohm 0cr21al6nb Fecral A1 Alloy Resistance Heating Strip for Furnace
Description
1Cr13Al4, 0Cr19Al3, 0Cr25Al5, 0Cr23Al5, 0Cr21Al6, 0Cr21Al4, 0Cr21Al6Nb, 0Cr27Al7Mo2 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,goodanti-oxidation and anti-corrosion under high temperature.
It is widely used in industrial furnace, household appliances, industry furnace, metallurgy, machinery, aircraft, automotive,
and other industries producing heating elements and resistance elements.
4). Stable properties in high temperature;
5). Fast delivery;
| C | P | S | Mn | Si | Cr | Ni | Al | Fe | Other | ||
| Max | |||||||||||
| 0.05 | 0.025 | 0.025 | 0.70 | Max 0.6 | 21.0~23.0 | Max 0.60 | 5.0~7.0 | Bal. | Nb 0.5 | ||
| Max Continuous Service Temp | 1350ºC |
| Resistivity at 20ºC | 1.45 ohm mm2/m |
| Density | 7.1 g/cm3 |
| Thermal Conductivity | 46.1 KJ/m·h·ºC |
| Coefficient of Thermal Expansion | 16.0×10-6/ºC |
| Melting Point | 1510ºC |
| Tensile Strength | 637~784 Mpa |
| Elongation | Min 12% |
| Section Variation Shrink Rate | 65~75% |
| Repeatedly Bend Frequency | Min 5 times |
| Continuous Service Time | - |
| Hardness | 200-260HB |
| Micrographic Structure | Ferrite |
| Magnetic Property | Magnetic |
Temperature Factor of Electrical Resistivity
| 20ºC | 100ºC | 200ºC | 300ºC | 400ºC | 500ºC | 600ºC | 700ºC | 800ºC | 900ºC | 1000ºC | 1100ºC | 1200ºC |
| 1 | 0.997 | 0.996 | 0.994 | 0.991 | 0.990 | 0.990 | 0.990 | 0.990 | 0.990 | 0.990 | 0.990 | 0.990 |
Standard Specification:
| Grade | Main chemical composition | Hightest temperature ℃ |
Rrsistivity |
Melting point ℃ | Tensile strength N/mm² |
Elogation |
Working life |
Magnetic |
|||
| Cr | Al | Ni | Fe | ||||||||
| OCr21Al4 | 17-21 | 3-4 | - | - | 1100 | 1.23±0.06 | 1500 | 750 | ≥12 | ≥80/1250 | magnetic |
| OCr25Al5 | 23-26 | 4.5-6.5 | - | - | 1250 | 1.42±0.07 | 1500 | 750 | ≥12 | ≥80/1300 | magnetic |
| OCr21Al6Nb | 21-23 | 5-7 | - | - | 1350 | 1.43±0.07 | 1510 | 750 | ≥12 | ≥50/1350 | magnetic |
| OCr27Al7Mo2 | 22-24 | 5-7 | - | - | 1400 | 1.53±0.07 | 1520 | 750 | ≥10 | ≥50/1350 | magnetic |
| KSC | 26.8-27.8 | 6-7 | - | - | 1350 | 1.44±0.05 | 1510 | 750 | ≥16 | ≥60/1350 | magnetic |
| Cr20Ni80 | 20-23 | - | Rest | ≤1.0 | 1200 | 1.09±0.05 | 1400 | 750 | ≥20 | ≥80/1200 | Non-magnetic |
| Cr30Ni70 | 30 | - | Rest | ≤1.0 | 1250 | 1.18±0.05 | 1380 | 750 | ≥20 | ≥50/1250 | Non-magnetic |
| Cr15Ni60 | 15-18 | - | 55 | Rest | 1150 | 1.12±0.05 | 1390 | 750 | ≥20 | ≥80/1150 | Non-magnetic |
| Cr20Ni35 | 18-21 | - | 35 | Rest | 1100 | 1.04±0.05 | 1390 | 750 | ≥20 | ≥80/1100 | Weak magnetic |
| Cr20Ni30 | 20 | - | 32 | Rest | 1100 | 1.04±0.05 | 1390 | 750 | ≥20 | ≥80/1100 | Weak magnetic |
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