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B-NdFeB68/64B

China GB B-NdFeB68/64B Materials for bonded neodymium iron boron permanent magnets and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: B-NdFeB68/64B / B-NdFeB68/64B
Category Grade Standard Region/Area Standard Content
Metals B-NdFeB68/64B GB/T 18880 China Materials for bonded neodymium iron boron permanent magnets

Chemical composition(mass fraction)(wt.%) of the B-NdFeB68/64B

Element Min Max Similar

Mechanical Properties of steel grade B-NdFeB68/64B

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
753 (≥) 594 (≥) 11 24 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 132

Physical Properties of steel grade B-NdFeB68/64B

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
22 - -     0.22 -  
116 459 - 32.3 223   -  
223 - 11 12.2   144 423

Heat Treatment of steel grade B-NdFeB68/64B

Heat treated : 1935°C - 1858°C

Technological Curves of steel grade B-NdFeB68/64B

Cross Reference Table (Equivalent Grade) of B-NdFeB68/64B

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