1J79
Similar Grades
GB/T | AISI/ASTM |
1J79 | Alloy4 |
Chemical Composition of 1J79:
Grade | % | Ni | Fe | C | Mn | Si | P | S | Cu | Mo |
4J36 | min | 78．5 | Balance | 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/cm? |
Curie Point | 450℃ |
Mechanical Properties of 1J79 Alloy at Room Temperature
Grade | Variety | Magnetic Properties | |||
Initial Permeability μO（mH/m） | Maximum Permeability μm （mH/m） | Coercive Force (Hc) （A/m） | Saturation Magnetic Induction Intensity Bs（T） | ||
1J79 | Cold-Rolled Strip | ≥31 | ≥250 | ≤1.2 | 0.75 |
Bars, Wires and Plates | ≥25 | ≥125 | ≤2.4 | 0.75 | |
1J79 Alloy: Characteristics and Applications
It features high initial permeability and is suitable for cores of various transformers, mutual inductors, magnetic amplifiers, chokes operating in weak magnetic fields, as well as magnetic shielding.