high and stable resistance, corrosion resistance, surface oxidation resistance is good, a better under high temperature and seis
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Alloy Nomenclature | Cr20Ni80 | Cr30Ni70 | Cr15Ni60 | Cr20Ni35 | Cr20Ni30 | |
Performance | ||||||
Main | Ni | (Rest) | Rest | 55.0-61.0 | 34.0-37.0 | 30.0-34.0 |
Chemical | Cr | 20.0-23.0 | 28.0-31.0 | 15.0-18.0 | 18.0-21.0 | 18.0-21.0 |
composition | Fe | ≤1.0 | ≤1.0 | Rest | Rest | Rest |
Max. continuous service temp. | 1200 | 1250 | 1150 | 1100 | 1100 | |
of element | ||||||
Resistivity at 20 C | 1.09 | 1.18 | 1.12 | 1 | 1.04 | |
Density | 8.4 | 8.1 | 8.2 | 7.9 | 7.9 | |
Thermal conductivity | 60.3 | 45.2 | 45.2 | 43.8 | 43.8 | |
Coefficient of lines expansion | 18 | 17 | 17 | 19 | 19 | |
Melting point | 1400 | 1380 | 1390 | 1390 | 1390 | |
(approx.)) | ||||||
Elongation at | >20 | >20 | >20 | >20 | >20 | |
rupture | ||||||
Micrographic | austenite | austenite | austenite | austenite | austenite | |
structure | ||||||
Magnetic | nonmagnetic | nonmagnetic | Weak magnetic | Weak magnetic | Weak magnetic | |
properties |