Chemical composition
composition | C | P | S | Cu | Mn |
≤ | |||||
Content(%) | 0.30 | 0.020 | 0.020 | 0.20 | 0.30~0.60 |
composition | Si | Ni | Cr | Fe |
Content(%) | 1.10~1.40 | 49.0~51.0 | 3.80~4.20 | Bal |
Physical properties
Shop sign | Linear expansion coefficient | Resistivity (μΩ·m) |
Density (g/cm³) |
Curie point (ºC) |
Saturation magnetostriction coefficient (10-6) |
1j54 | — | 0.90 | 8.2 | 360 | — |
Heat treatment system
shop sign | Annealing medium | heating temperature | Keep the temperature time/h | Cooling rate |
1j50 | Dry hydrogen or vacuum, pressure is not greater than 0.1 Pa | Along with the furnace heating up 1100~1150ºC | 3~6 | In ≤200 ºC / h speed cooling to 400~500 ºC, fast to 200 ºC draw a charge |