0.02m Thickness 1J79 Soft Magnetic Alloys Strip Super Permalloy
Ohmalloy Material Co.,Ltd is a high-tech enterprise which specialized in making all kinds of alloy such as high resistance alloy, low-resistance copper nickel alloy, precision alloy, FeCrAl alloy and thermocouple Alloy.
Ohmalloy Material Co.,Ltd have a full production line from melting, surface cleaning, rolling and slitting, full set of testing machine and can meet all kinds of technical requirement from customer. Our product is widely used in heating equipment, big steel mill, mineral, electrical equipment, food machinery, auto industry, aerospace industry. Our product not only is popular in domestic market, but also been exported to all over the world.
Normal composition
| Ni | 78.5~80.0 | Fe | Bal. | Mn | 0.6~1.1 | Si | 0.3~0.5 |
| Mo | 3.8~4.1 | Cu | ≤0.2 | ||||
| C | ≤0.03 | P | ≤0.02 | S | ≤0.02 |
Typical Mechanical properties
| Yield strength | Tensile Strength | Elongation |
| Mpa | Mpa | % |
| 980 | 1030 | 3~50 |
Typical Physical propertie
| Density (g/cm3) | 8.6 |
| Electrical resistivity at 20℃(Ωmm2/m) | 0.55 |
| Coefficient of linear expansion(20℃~200℃)X10-6/℃ | 10.3~11.5 |
| Saturation magnetostriction coefficient λθ/ 10-6 | 2.0 |
| Curie point Tc/ ℃ | 450 |
|
The magnetic properties of alloys with high permeability in weak fields |
|||||||
| 1J79 | Initial permeability | Maximum permeability | Coercivity | Saturation magnetic induction intensity | |||
|
Сold-rolled strip/ sheet. Thickness, mm |
μ0.08/ (mH/m) | μm/ (mH/m) | Hc/ (A/m) | BS/ T | |||
| ≥ | ≤ | ||||||
| 0.01 mm | 17.5 | 87.5 | 5.6 |
0.75 |
|||
| 0.1~0.19 mm | 25.0 | 162.5 | 2.4 | ||||
| 0.2~0.34 mm | 28.0 | 225.0 | 1.6 | ||||
| 0.35~1.0 mm | 30.0 | 250.0 | 1.6 | ||||
| 1.1~2.5 mm | 27.5 | 225.0 | 1.6 | ||||
| 2.6~3.0 mm | 26.3 | 187.5 | 2.0 | ||||
| cold drawn wire | |||||||
| 0.1 mm | 6.3 | 50 | 6.4 | ||||
| Bar | |||||||
| 8-100 mm | 25 | 100 | 3.2 | ||||
| Mode of heat treatment 1J79 | |
| Annealing media | Vacuum with a residual pressure not higher than 0.1Pa, hydrogen with a dew point of not higher than minus 40 ℃. |
| The heating temperature and rate | 1100~1150℃ |
| Holding time | 3~6 |
| Cooling rate | With 100 ~ 200 ℃/ h cooled to 600 ℃, rapidly cooled to 300℃ |
Style of supply
| Alloys Name | Type | Dimension | ||
| OhmAlloy-1J79 | Wire | D= 0.1~8mm | ||
| OhmAlloy-1J79 | Strip | W= 8~390mm | T= 0.3mm | |
| OhmAlloy-1J79 | Foil | W= 10~100mm | T= 0.01~0.1 | |
| OhmAlloy-1J79 | Bar | Dia= 8~100mm | L= 50~1000 | |
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.