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China GB DR440-50 电工用热轧硅钢薄钢板 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: DR440-50 / DR440-50
Category Grade Standard Region/Area Standard Content
Metals DR440-50 GB 5212 China 电工用热轧硅钢薄钢板

Chemical composition(mass fraction)(wt.%) of the DR440-50

Element Min Max Similar

Mechanical Properties of steel grade DR440-50

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)
876 (≥) 517 (≥) 13 43 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 323

Physical Properties of steel grade DR440-50

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
43 - -     0.14 -  
182 373 - 24.3 122   -  
838 - 22 12.2   311 342

Heat Treatment of steel grade DR440-50

Heat treated : 1676°C - 1342°C

Technological Curves of steel grade DR440-50

Cross Reference Table (Equivalent Grade) of DR440-50

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