Approximate Brand：
GB/T | AISI/ASTM |
1J79 | Alloy4 |
Chemical constituents of 1J79:
Brand | % | Ni | Fe | C | Mn | Si | P | S | Cu | Mo |
4J36 | min | 78．5 | allowance | 0.6 | 0．3 | 3.8 | ||||
max | 80．5 | 0.03 | 1.1 | 0.5 | 0.02 | 0.02 | 0.02 | 4.1 |
Physical properties of 1J79:
density | 8.6 g/cm³ |
Curie point | 450℃ |
Mechanical properties of 1J79 alloy at room temperature:
Brand | Varieties | Magnetic properties | |||
Initial permeability μO（mH/m） | Maximum permeability μm （mH/m） | Coercivity Hc （A/m） | Saturated magnetic induction Bs（T） | ||
1J79 | Cold rolled strip | ≥31 | ≥250 | ≤1.2 | 0.75 |
Barbed wire board | ≥25 | ≥125 | ≤2.4 | 0.75 | |
Characteristics and Application of 1J79:
Various transformers, transformers, magnetic amplifiers, choke coil cores and magnetic shielding working in weak magnetic field with high initial permeability.