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QT400-15(LT)

China JB QT400-15(LT) 燃气轮机大型球墨铸铁件.技术条件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: QT400-15(LT) / QT400-15(LT)
Category Grade Standard Region/Area Standard Content
Metals QT400-15(LT) JB/T 11031 China 燃气轮机大型球墨铸铁件.技术条件

Chemical composition(mass fraction)(wt.%) of the QT400-15(LT)

Element Min Max Similar

Mechanical Properties of steel grade QT400-15(LT)

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)
556 (≥) 433 (≥) 32 13 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 241

Physical Properties of steel grade QT400-15(LT)

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
44 - -     0.33 -  
616 928 - 34.3 211   -  
681 - 12 21.2   311 142

Heat Treatment of steel grade QT400-15(LT)

Heat treated : 1792°C - 1529°C

Technological Curves of steel grade QT400-15(LT)

Cross Reference Table (Equivalent Grade) of QT400-15(LT)

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