1J50
Similar Grades
GB/T | JIS |
1J50 | PB |
Chemical Composition:
Grade | % | Ni | Fe | C | Mn | Si | P | S | Cu |
1J50 | min | 49.5 | Balance | 0.30 | 0.15 | ||||
max | 50.5 | 0.03 | 0.60 | 0.30 | 0.020 | 0.020 | 0,20 |
Mechanical Properties of the Alloy at Room Temperature
Grade | Variety | Magnetic Properties | |||
Initial Permeability μO (mH/m) | Maximum Permeability μm (mH/m) | Coercivity Hc (A/m) | Saturation Magnetic Induction Intensity Bs(T) | ||
1J50 | Cold-Rolled Strip | ≥3.8 | ≥62.5 | ≤9.6 | 1.5 |
Forged (Rolled) Bar/Plate | ≥3.1 | ≥31.3 | ≤14.4 | 1.5 | |
Alloy's Average Linear Thermal Expansion Coefficient
Grade | Average Linear Thermal Expansion Coefficient(10一6℃) | |||||
20~100℃ | 20~200℃ | 20~300℃ | 20~400℃ | 20~500℃ | 20~600℃ | |
1J50 | 8.9 | 9.27 | 9.2 | 9.2 | 9.4 | —— |
Main Characteristics
It features a rectangular hysteresis loop and high saturation magnetic induction intensity.

Application Fields
It is mainly used in magnetic amplifiers, chokes, rectifier coils, and computer device components operating in medium magnetic fields.