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ZGD270-480

Description

China GBT ZGD270-480 Low alloy steel castings for general engineering and structural purposes and ZGD270-480 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: ZGD270-480
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy ZGD270-480 GBT China Low alloy steel castings for general engineering and structural purposes
4J78
4J80
4J82
6J10
6J15
6J20
6J22
6J23
6J24
ZGD270-480

Chemical composition(mass fraction)(wt.%) of the ZGD270-480

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Mo(%) V(%)
0.20 0.60 0.30-0.80 0.04 0.045 1.00-1.50 0.45-0.65 0.15-0.25

Mechanical Properties of steel grade ZGD270-480

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)
473 (≥) 934 (≥) 22 22 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 231

Physical Properties of steel grade ZGD270-480

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
42 - -     0.42 -  
559 237 - 22.3 442   -  
242 - 23 24.2   333 312

Heat Treatment of steel grade ZGD270-480

Heat treated : 1979°C - 1972°C

Technological Curves of steel grade ZGD270-480

Cross Reference Table (Equivalent Grade) of ZGD270-480

Grade Standard Country Application
ZGD270-480 GBT China Low alloy steel castings for general engineering and structural purposes
ZGD270-480 GBT China Low alloy steel castings for general engineering and structural purposes

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