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imn chromium aluminium elcctrialyheating alloy. Imn Chromium aluminium elcctrialyheating alloy. Use one of the lightest electrothermal alloys. It has the characteristics of large resistivity, small temperature coefficient of resistance, good oxidation resistance and high temperature (1400 degrees).
Chemical composition: GB/T1234-95
| Alloy grade | C | P | S | Mn | Si | Cr | Ni | Al | Fe | other |
| Not more than | ||||||||||
| 1Cr13Al4 | 0.12 | 0.025 | 0.025 | 0.70 | ≤1.00 | 12.0～15.0 | — | 4.0～6.0 | yu | — |
| 0Cr25Al5 | 0.06 | 0.025 | 0.025 | 0.70 | ≤0.60 | 23.0～26.0 | ≤0.60 | 4.5～6.5 | yu | — |
| 0Cr23Al5 | 0.06 | 0.025 | 0.025 | 0.70 | ≤0.60 | 20.5～23.5 | ≤0.60 | 4.2～5.3 | yu | — |
| 0Cr21Al6 | 0.06 | 0.025 | 0.025 | 0.70 | ≤1.00 | 19.0～22.0 | ≤0.60 | 5.0～7.0 | yu | — |
| 1Cr20Al3 | 0.06 | 0.025 | 0.025 | 0.70 | ≤1.00 | 18.0～21.0 | ≤0.60 | 3.0～4.2 | yu | — |
| 0Cr21Al6Nb | 0.05 | 0.025 | 0.025 | 0.70 | ≤0.60 | 21.0～23.0 | ≤0.60 | 5.0～7.0 | yu | NbAmount added to0.5 |
| 0Cr27Al7Mo2 | 0.05 | 0.025 | 0.025 | 0.20 | ≤0.40 | 26.5～27.8 | ≤0.60 | 6.0～7.0 | yu | MoAmount added to1.8～2.2 |
Soft wire resistivity:
| Alloy grade | diameter，mm | Electrical resistivityμΩ·m(20℃) |
| 1Cr13Al40Cr25Al50Cr23Al50Cr21Al61Cr20Al30Cr21Al6Nb | 0.03～8.00 | 1.25±0.081.42±0.071.35±0.061.42±0.071.23±0.061.45±0.07 |
| 0Cr27Al7Mo2 | 0.03～8.00 | 1.53±0.07 |
Size: mm
| Wire bar | Enamelled or bare wire | Bare filament | ||
| diameter | 0.02～1.2 | diameter | >0.02～6.0 | |
| Strip strip | thickness | 0.05～3.5 | breadth | 6～100 |
| Flat wire | thickness | 0.08～0.8 | breadth | 0.2～10.0 |
Strip resistivity:
| Alloy grade | diameter，mm | Electrical resistivityμΩ·m(20℃) |
| 1Cr13Al40Cr25Al50Cr23Al50Cr21Al61Cr20Al30Cr21Al6Nb0Cr27Al7Mo2 | 0.05～3.50 | 1.25±0.081.42±0.071.35±0.071.42±0.071.23±0.071.45±0.071.53±0.07 |
