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China GB Y12 易切削结构钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Y12 / Y12
Category Grade Standard Region/Area Standard Content
Metals Y12 GB/T 8731 China 易切削结构钢

Chemical composition(mass fraction)(wt.%) of the Y12

Element Min Max Similar
Si 0.1500 0.3500 -
S 0.1000 0.2000 -
P 0.0800 0.1500 -
Mn 0.7000 1.0000 -
C 0.0800 0.1600 -

Mechanical Properties of steel grade Y12

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)
295 (≥) 867 (≥) 42 43 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 111

Physical Properties of steel grade Y12

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
14 - -     0.44 -  
287 825 - 21.3 131   -  
429 - 23 13.2   443 311

Heat Treatment of steel grade Y12

Heat treated : 1825°C - 1684°C

Technological Curves of steel grade Y12

Cross Reference Table (Equivalent Grade) of Y12

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