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China GB Y20 易切削结构钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Y20 / Y20
Category Grade Standard Region/Area Standard Content
Metals Y20 GB/T 8731 China 易切削结构钢

Chemical composition(mass fraction)(wt.%) of the Y20

Element Min Max Similar

Mechanical Properties of steel grade Y20

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)
962 (≥) 695 (≥) 33 42 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 443

Physical Properties of steel grade Y20

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
13 - -     0.34 -  
329 166 - 44.3 432   -  
395 - 22 12.2   141 233

Heat Treatment of steel grade Y20

Heat treated : 1567°C - 1387°C

Technological Curves of steel grade Y20

Cross Reference Table (Equivalent Grade) of Y20

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