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2J83, 2J84, 2J85 Wrought Iron-Chromium-Cobalt Permenent Magnet Alloys

Place of Origin China
Brand Name XUNSHI
Certification ISO9001
Model Number 2J83, 2J84, 2J85
Minimum Order Quantity 30kg
Price Negotiable
Packaging Details Plywood case
Delivery Time 30-35 days
Payment Terms T/T
Supply Ability 500kg per week

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Product Details
Spec YB/T 5261-2016 Type Of Alloy FeCrCo
Density 7.7g/cm3 Melting Range 1530~1600°C
Tc 671°C Resistivity 0.64~0.80 μΩ·m
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precipitation hardening alloys


cobalt iron alloy

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Product Description

2J83, 2J84, 2J85 Wrought Iron-Chromium-Cobalt Permenent Magnet Alloys



Iron-chromium-cobalt permanent magnet alloy not only has good ductility, but also has good magnetic properties. It is the most widely used deformable permanent magnet material at present. Its magnetic properties are comparable to cast aluminum nickel cobalt alloy, and the price is cheaper than iron cobalt vanadium permanent magnet alloy. The alloy is characterized by homogeneous composition, compact structure and stable performance. It can replace some cast Al-Ni-Co alloys and Fe-Co-V alloys to make complex permanent magnet components.


Chemical composition

  C Mn S P Cr Co Si Mo Ti Fe
2J83 0.030 max 0.20 max 0.030 max 0.020 max 26.0~27.5 19.5~21.0 0.80~1.10 - - Rem
2J84 0.030 max 0.20 max 0.030 max 0.020 max 25.5~27.0 14.5~16.0 - 3.00~3.50 0.50~0.80 Rem
2J85 0.030 max 0.20 max 0.030 max 0.020 max 23.5~25.0 11.5~13.0 0.80~1.10 - - Rem



  •  Heat resistant: magnetism does not decline below 400 degrees
  •  Can be machined, such as cutting, tapping, drilling, stamping, etc.
  •  Impact resistance while other magnetic materials are fragile and easy to crack.
  •  Magnetic requirements can be adjusted according to customer needs (semi hard magnetic properties can be made).
  •  Good corrosion resistance

Magnetic properties

Grade Type Br/T Hc(kA/m) (B·H)max/(kJ/m3)
2J83 anisotropy 1.05 min 48 min 24~32
2J84 anisotropy 1.20 min 52 min 32~40
2J85 anisotropy 1.30 min 44 min 40~48



This alloy is mainly used in all kinds of aviation, ships, automotive instruments, magnetic compass diameter, oil logging tools, level indicators, signal generators, burglars, counters, embroidery machines, hearing aids, etc. 


Forms of supply

  •  Hot forged bars
  •  Hot rolled flat bars
  •  Cold drawn wire
  •  Cold rolled strip