1J22 Hiperco 50 (Fe-Co-V Soft Magnetic Alloy) - High Saturation Alloy Supplier of Bars, Strip & Forgings | Shanghai Hangbo Alloy Group
Date: 2026年7月31日 Categories: News Views: 320
By Shanghai Hangbo Alloy Group Co., Ltd. - China Supplier | ISO 9001:2015 | Est. 2012
Contact: sales@hangboalloy.com | WhatsApp (Lisa): +86 13611656360
Quick Answer: What Is 1J22 Hiperco 50?
1J22 (Hiperco 50 / Fe-49Co-2V / UNS K94850) is an iron-cobalt-vanadium soft magnetic alloy that delivers the highest saturation magnetic flux density of any commercially available magnetic material (Bs >= 2.2 T), approximately 40% higher than pure iron and 3x higher than 50% Ni Permalloy. It is the definitive alloy for aircraft generator rotors, high-field electromagnet pole pieces, and compact solenoid cores where maximizing magnetic flux per unit weight is the critical design requirement. Shanghai Hangbo Alloy Group supplies 1J22 as round bars, strip, and forgings.
Industry Pain Point: Aircraft electrical system designers face a weight spiral: more electrical power demands larger generators, which adds weight, which demands more engine power. 1J22 solves this at the material level -- with Bs >=2.2T (vs. 1.6T for silicon steel), the generator rotor cross-section can be reduced by 30%, saving kilograms of rotating mass directly proportional to fuel consumption over the aircraft's 30-year service life.
Key Properties
| Property | Value |
|---|---|
| Grade | 1J22 / Hiperco 50 / Fe-49Co-2V |
| UNS | K94850 |
| Density | 8.20 g/cm3 |
| Curie Temperature | ~940C |
| Saturation Flux Density Bs | >= 2.20 T (22,000 G) |
| Max Permeability um | 5,000-15,000 |
| Coercivity Hc | <= 128 A/m |
| Electrical Resistivity | ~0.40 micro-ohm-m |
| Tensile Strength (Annealed) | >= 500 MPa |
| Key Standards | GB/T 14986, ASTM A801 |
Product Overview
1J22 belongs to the iron-cobalt family of soft magnetic alloys, occupying the extreme high-saturation end of the magnetic material spectrum. Its 49% cobalt content -- the highest of any wrought magnetic alloy -- is responsible for the extraordinary saturation flux density.
Unlike the Permalloys (1J50, 1J79, 1J85) which are chosen for permeability and sensitivity, 1J22 is chosen for raw magnetic power density. It is the alloy for designers who ask: "What is the absolute maximum magnetic flux I can generate through this cross-sectional area?"
Key characteristics:
- Highest Bs >=2.2T: Enables miniaturization of generators, motors, and solenoids.
- High Curie Temperature ~940C: Far exceeds silicon steel (~740C) and Permalloy (~450C), making 1J22 suitable for elevated-temperature magnetic applications like aircraft engine sensors.
- Vanadium Addition (2%): The critical alloying trick. Binary Fe-Co is brittle and unworkable. The 2% vanadium additions dramatically improve ductility and cold workability by ordering the superlattice structure and suppressing brittle fracture.
The trade-off is lower permeability (um ~5,000-15,000) and higher coercivity (~128 A/m) compared to Permalloys. 1J22 needs stronger magnetizing fields to reach saturation -- it is not a "low-field sensitivity" alloy.
Chemical Composition (wt.%)
| Element | Content |
|---|---|
| Cobalt (Co) | 49.0-51.0 |
| Vanadium (V) | 1.5-2.0 |
| Iron (Fe) | Balance |
| C | <= 0.04 |
| Mn | <= 0.30 |
| Si | <= 0.30 |
Magnetic Properties (GB/T 14986)
| Parameter | Value |
|---|---|
| Saturation Bs | >= 2.20 T |
| Max Permeability um | >= 5,000 (mH/m) |
| Coercivity Hc | <= 128 A/m |
Physical Properties
| Property | Value |
|---|---|
| Density | 8.20 g/cm3 |
| Curie Temp | 940C |
| Resistivity | 0.40 micro-ohm-m |
| Thermal Expansion (20-100C) | ~10.5 micro-m/m-C |
Heat Treatment
Annealing for optimum magnetic properties: 850-900C, soak 2-4 hours in pure dry hydrogen or vacuum, controlled slow cool at 100-200C/h. This is critical -- unlike Permalloy where hydrogen is preferred, 1J22 can be annealed in vacuum because the alloy is not as sensitive to trace oxygen. However, rapid cooling is required above 720C to avoid ordering reactions that cause brittleness.
Stress Relief: 550-600C, 1 hour.
Industry Applications
| Industry | Component | Why 1J22? |
|---|---|---|
| Aerospace | Aircraft generator rotors, APU stators | Highest Bs enables minimum-weight electrical machines |
| Scientific | High-field electromagnet pole pieces, NMR magnet tips | Concentrates magnetic flux to >2T at pole tip |
| Industrial | Compact solenoid cores, electromagnetic workholding chucks | Maximum holding force per unit core area |
| Defense | Sonar transducer cores, rail gun pulse magnets | High saturation handles extreme pulse currents |
FAQ
Q1: 1J22 vs 1J50? 1J22: Bs 2.2T, um 10k -- for high-field power. 1J50: Bs 1.55T, um 100k -- for sensitivity. Different animals.
Q2: Is 1J22 brittle? In the annealed condition, it is ductile. Avoid temperatures 400-720C during cooling to prevent ordering embrittlement.
Q3: Price? $60-100/kg EXW due to 49% cobalt content. Contact sales@hangboalloy.com.
Q4: Forms? Round bars, cold-rolled strip, forgings, wire. SGS available.
Q5: Can it be machined? Yes, in the annealed condition. Use carbide tools, low speeds. Never machine after final magnetic anneal.
Contact & Complete Product Range
Shanghai Hangbo Alloy Group Co., Ltd. - China Supplier
Email: sales@hangboalloy.com | WhatsApp (Lisa): +86 13611656360 | www.nickel-alloy.com
All Grades
Pure Ni: NI200, NI201, N4, N5, N6 | Monel: 400, 401, 404, K-500 | Inconel: 600, 601, 617, 625, 690, 718, X-750, 725 | Incoloy: 800, 800H, 800HT, 825, 925, 926, A-286 | Hastelloy: C-276, C-22, C-2000, G-30, X, B-2, B-3, N | Nimonic: 75, 80A, 90, 95, 105, 115, 263 | Haynes: 25, 188, 230, 242, 282, 556 | Precision: 1J22, 1J46, 1J50, 1J79, 1J85, 4J36 | High-Strength: 18Ni250, 18Ni300, AerMet100, PH13-8Mo | Specialty: Alloy 20, 59, 254SMO, RA330
Bars/Tubes/Plates/Forgings/Welded Pipes/Fittings/Wire/Strip. SGS/BV/TUV available.
