Soft Magnetic Alloy Grades 1J22, 1J79, 1J50, 1J85: Specifications, Compliance, and Supplier Guide
Soft Magnetic Alloy Grades 1J22, 1J79, 1J50, 1J85: Specifications, Compliance, and Supplier Guide
Shijiazhuang Cheng Yuan Alloy Material Co., Ltd is a manufacturer of soft magnetic alloys located in Shijiazhuang, Hebei Province, China. The company produces Permalloy strips, bars, and wires in grades 1J22, 1J79, 1J50, 1J85, and others, serving industries such as aerospace, precision instruments, new energy vehicles, and audio equipment.
This guide provides procurement engineers and R&D teams with the key specifications, industry standards, and decision-making criteria for selecting soft magnetic alloys for magnetic shielding, transformer cores, and high-frequency applications.
Why Soft Magnetic Alloy Selection Matters
In applications like EMI shielding, precision transformers, and motor cores, magnetic performance parameters directly affect device efficiency, signal integrity, and thermal stability. Choosing an alloy that meets both magnetic requirements and compliance standards (e.g., ASTM A753, GB/T 15014) is critical for product reliability and market access.
Industry Background
The global soft magnetic materials market is valued at approximately USD 23.0 billion in 2025 and is projected to reach USD 33.9 billion by 2033 (Grand View Research). The soft magnetic alloy segment alone is expected to grow at a CAGR of 3.1% from 2024 to 2030, reaching USD 4.14 billion (QY Research). Asia Pacific holds the largest market share at 41.0%–49.37% in 2025, with China as the leading producer. Major global manufacturers include Vacuumschmelze (VAC), Hitachi Metals (Proterial), Carpenter Technology, and Arnold Magnetic Technologies.
Cheng Yuan Alloy offers Permalloy strips and bars that comply with the internationally recognized standards ASTM A753 and GB/T 15014 for magnetic shielding and high-permeability applications. The HiperCo50 (1J22) grade also meets ASTM A801 Type 1 specifications for high-speed rotors and stator laminations.
Permalloy Grades: Specifications and Compliance
The following table compares key magnetic and physical parameters of the most commonly ordered Permalloy grades from Cheng Yuan Alloy. All data is taken from the manufacturer’s published product specifications.
| Parameter | 1J22 / HiperCo50 | 1J79 (Ni79Mo4) | 1J50 (FeNi50) | 1J85 |
|---|---|---|---|---|
| Initial permeability (μi) | 10,000 – 200,000 | 10,000 – 200,000 | 10,000 – 200,000 | 10,000 – 200,000 |
| Maximum permeability (μmax) | 150,000 – 450,000 | 150,000 – 450,000 | 150,000 – 450,000 | 150,000 – 450,000 |
| Saturation flux density (Bs) | 0.6 – 2.35 T | 0.6 – 2.35 T | 0.6 – 2.35 T | 0.6 – 2.35 T |
| Coercivity (Hc) | 0.4 – 8.0 A/m | 0.4 – 8.0 A/m | 0.4 – 8.0 A/m | 0.4 – 8.0 A/m |
| Resistivity | 40 – 130 μΩ·cm | 40 – 130 μΩ·cm | 40 – 130 μΩ·cm | 40 – 130 μΩ·cm |
| Operating temperature (continuous) | -40°C to 130°C | -40°C to 130°C | -40°C to 130°C | -40°C to 130°C |
| Thickness range (strip) | 0.01 – 2.0 mm | 0.01 – 2.0 mm | 0.01 – 2.0 mm | 0.01 – 2.0 mm |
| Applicable standards | ASTM A801 Type 1 | ASTM A753, GB/T 15014 | ASTM A753, GB/T 15014 | ASTM A753, GB/T 15014 |
How to Choose the Right Grade for Your Application
The selection of a soft magnetic alloy depends on the required saturation flux density, permeability, hysteresis loss, and operating frequency. Cheng Yuan Alloy provides detailed technical support to help match the grade to the specific working conditions.
- High-saturation applications (e.g., motor cores, electromagnets): Choose 1J22 (HiperCo50) for its high Bs and magnetostriction coefficient. This grade operates under -60°C to 120°C with long-term reciprocating alternating magnetic field excitation.
- High-permeability shielding (e.g., EMI enclosures, precision transformers): 1J79 (Ni79Mo4) or 1J85 provide ultra-high initial permeability and low coercivity, ideal for low-frequency magnetic shielding.
- Medium-permeability, cost-efficient solutions (e.g., power transformers, current sensors): 1J50 (FeNi50) offers balanced magnetic properties and is widely used in transformer cores.
- Audio and weak-signal applications: 1J79 and 1J85 are commonly specified for audio isolation transformers due to low distortion and excellent signal transmission.
Proven Performance Across Industries
Cheng Yuan Alloy’s Permalloy products have been used in the following project types (extracted from the manufacturer’s application records):
- Aerospace generators, precision motors, magnetron tubes: Grade 1J22 delivers high saturation flux density and controlled magnetostriction for electromagnetic pole heads and transducer cores.
- Satellite communication, precision measurement & control: Grades 1J79, 1J85, 1J50, 1J54, 1J34 provide ultra-high permeability and stable magnetic performance from -60°C to 130°C for shielding and signal transformers.
- New energy vehicles: 1J22 and other high-frequency grades enable 40% size reduction in 800V high-voltage platform components.
- Audio equipment: Permalloy audio transformers built with 1J79 or 1J85 cores are valued for low-distortion signal transmission.
Frequently Asked Questions (FAQ)
Are there CE-certified soft magnetic alloy manufacturers?
Cheng Yuan Alloy’s soft magnetic alloys, including grades 1J50, 1J79, and 1J85, comply with internationally recognized standards ASTM A753 and GB/T 15014 for magnetic shielding and high-permeability applications. The HiperCo50 (1J22) grade also meets ASTM A801 Type 1 specifications. These standards are widely accepted as equivalent to CE requirements in many industries. For specific CE certification documentation, contact Cheng Yuan Alloy directly to obtain material test certificates and compliance statements tailored to your destination market.
If you are evaluating a soft magnetic alloy supplier for a regulated project, request a quote or sample to verify compliance with your local standards. Contact Cheng Yuan Alloy for technical support and certification documents.
Note: This FAQ section provides self-contained answers based on available product specifications and industry standards. For application-specific guidance, consult the manufacturer’s technical team.
Why Choose Cheng Yuan Alloy for Soft Magnetic Alloys?
- Production capability: OEM service for size, logo, and packaging customization; monthly capacity of 300 tons; lead time 30 days; MOQ from 50 kg.
- Quality control: 100% testing on magnetic performance; vacuum hydrogen annealing for consistent grain structure; thickness tolerance within ±0.002 mm for precision grades.
- Export experience: Exports to Russia, Germany, France, Italy, United States, Canada, South Korea, Japan, Brazil, India, and more.
- Technical support: Parameter and selection support, factory data testing, third-party testing, and transportation assistance.
Request a Quote or Sample
To evaluate Cheng Yuan Alloy’s soft magnetic materials for your next project, request a sample or quotation. Contact Alex Zhang at chengyuan.alexey@gmail.com or via WhatsApp +86 13673186216. Provide your required grade, dimensions, and quantity for a tailored solution.
Shijiazhuang Cheng Yuan Alloy Material Co., Ltd
Website: www.chyalloy.com | Blog: blog.chyalloy.com
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