Complaint
| 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 | |
