1J79 alloy has an austenitic structure and high initial magnetic permeability. It is suitable for various transformers, mutual inductors, magnetic amplifiers, choke cores and magnetic shields that work in weak magnetic fields.
High saturation magnetic induction soft magnetic 1J79 iron-nickel alloy is a nickel alloy containing 79-80%, with high initial magnetic permeability and permeability, low coercive force, and low saturation magnetic induction.
Specifications | In stock, can be customized according to customer requirements |
Form | Plate,Strip,Bar,Wire |
Classification | Expanded alloy |
Alloy | C | P | S | Mn | Si | Ni | Cr | Co | Mo | Cu | Fe |
no greater than | |||||||||||
1J76 | 0.03 | 0.020 | 0.020 | 0.30~0.60 | 0.15~0.30 | 75.0~76.5 | 1.80~2.20 | — | — | 4.80~5.20 | balance |
1J77 | 0.03 | 0.020 | 0.020 | 0.30~0.60 | 0.15~0.30 | 75.0~78.0 | — | — | 3.90~4.50 | 4.80~6.00 | balance |
1J79 | 0.03 | 0.020 | 0.020 | 0.60~1.10 | 0.30~0.50 | 78.5~80.0 | — | — | 3.80~4.10 | ≤0.20 | balance |
1J80 | 0.03 | 0.020 | 0.020 | 0.60~1.10 | 1.10~1.50 | 79.0~81.5 | 2.60~3.00 | — | — | ≤0.30 | balance |
1J85 | 0.03 | 0.020 | 0.020 | 0.30~0.60 | 0.15~0.30 | 79.0~81.0 | — | — | 4.80~5.20 | ≤0.20 | balance |
1J86 | 0.03 | 0.020 | 0.020 | ≤1.00 | ≤0.30 | 80.5~81.5 | — | — | 5.80~6.20 | — | balance |
Resistivity ¦ μΩ·m | Density¦ g/cm3 | Curie point¦ （℃） | Saturation magnetostriction coefficientX10-2 | Brinell hardness HBS | Tensile strength MPa | Yield strength MPa | Elongation (%) | ||||||
Cold hard state | Soft state | Cold hard state | Soft state | Cold hard state | Soft state | Cold hard state | Soft state | ||||||
0.55 | 8.6 | 450 | 2 | 210 | 120 | 1030 | 560 | 980 | 150 | 3 | 50 | ||
Linear expansion coefficient in the following temperature ranges/（X10-6/K) | ||||||||
20-100℃ | 20-200℃ | 20-300℃ | 20-400℃ | 20-500℃ | 20-600℃ | 20-700℃ | 20-800℃ | 20-900℃ |
10.3-10.8 | 10.9-11.2 | 11.4-12.9 | 11.9-12.5 | 12.3-13.2 | 12.7-13.4 | 13.1-13.6 | 13.4-13.6 | 13.2-13.7 |
1J79 alloyis used to make pulse transformers, high-sensitivity relays, magnetic amplifiers, magnetic regulators, current transformers, iron cores for program-controlled telephones, electronic watch stepper motors, high-precision electric meters, choke coils, magnetic shields, etc.
1J79 alloy is used in high-sensitivity and small power transformers, magnetic amplifiers, relays, chokes, magnetic heads for magnetic recording devices, magnetic shielding, various tape-wound cores, cut cores, and laminated cores used in weak magnetic fields.
1J79saturation magnetic induction intensity is greater than 0.75T, initial magnetic permeability is greater than 25mH/m, magnetic permeability is greater than 125mH/m, and coercive force is less than 2.4A/m.
Cold rolled strip 0.03～0.10×180～250mm＞0.10～1.00×10～250mm>1.00～2.50×100～250mm
Cold-drawn wire material Φ0.10～6.00mm
Hot rolled flat material 4.50～20.0×50～250mm
Hot forged bar Φ20.0～100.0mm or square bar
The manufacturing process of stainless steel and alloys involves multiple steps to transform raw materials into flat,rectangular sheets or plates made of stainless steel and alloys. Here are a few key steps for stainless steel and alloys:
Molten stainless steel and alloys are cast into large ingots or billets through a casting process.
During the hot rolling process,the thickness of the steel ingot is gradually reduced and elongated to form long strips or coils.
Annealing involves heating stainless steel and alloys to a specific temperature and then slowly cooling it.
Cold rolling is carried out through rolling mills to reduce thickness to meet customer specifications.
Wuxi Walmay Metal Co,Ltd is a comprehensive processing group of Alloy Steel、Forged Parts Fitting、Titanium Alloy、Stainless Steel、Special Welding Wireseries， and more than 800 specifications.
Our group has been engaged in the domestic and global market for more than ten years with rich steel experience and can offer professional advice for customers inapplications with different materials.
Machine cutting
Sheet cutting
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sawing
Plank leveling
polishing
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laser cutting
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Bar and structural cutting
polishing
Heat treatment and annealing: Wuxi Walmay Metal can heat treat certain 400 series stainless steels.
Material Reliability Identification (PMI): Wuxi Walmay Metal can complete this testing in-house.
Ut Testing: Ultrasonic testing (UT) uses high-frequency sound energy to inspect and measure stainless steel products.
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