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ZG250-485

China GB ZG250-485 通用阀门 碳素钢铸件技术条件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: ZG250-485 / ZG250-485
Category Grade Standard Region/Area Standard Content
Metals ZG250-485 GB/T 12229 China 通用阀门 碳素钢铸件技术条件

Chemical composition(mass fraction)(wt.%) of the ZG250-485

Element Min Max Similar
CE - 0.5000 -
Total Others - 1.0000 -
V - 0.0300 -
Mo - 0.2500 -
Cr - 0.5000 -
Ni - 0.5000 -
Cu - 0.3000 -
Si - 0.6000 -
S - 0.0450 -
P - 0.0400 -
Mn - 1.0000 -
C - 0.3000 -

Mechanical Properties of steel grade ZG250-485

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)
224 (≥) 199 (≥) 31 32 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 111

Physical Properties of steel grade ZG250-485

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 - -     0.32 -  
762 923 - 42.3 423   -  
395 - 14 21.2   232 132

Heat Treatment of steel grade ZG250-485

Heat treated : 1944°C - 1526°C

Technological Curves of steel grade ZG250-485

Cross Reference Table (Equivalent Grade) of ZG250-485

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