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China GB QA-50 轧制钢球 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: QA-50 / QA-50
Category Grade Standard Region/Area Standard Content
Metals QA-50 GB 8649 China 轧制钢球

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

Element Min Max Similar

Mechanical Properties of steel grade QA-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)
282 (≥) 697 (≥) 31 22 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 222

Physical Properties of steel grade QA-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
21 - -     0.21 -  
533 312 - 24.3 132   -  
845 - 14 41.2   224 132

Heat Treatment of steel grade QA-50

Heat treated : 1486°C - 1676°C

Technological Curves of steel grade QA-50

Cross Reference Table (Equivalent Grade) of QA-50

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