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China HB T7 航空结构钢热处理工艺 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: T7 / T7
Category Grade Standard Region/Area Standard Content
Metals T7 HB/Z 136 China 航空结构钢热处理工艺

Chemical composition(mass fraction)(wt.%) of the T7

Element Min Max Similar

Mechanical Properties of steel grade T7

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)
769 (≥) 968 (≥) 42 11 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 412

Physical Properties of steel grade T7

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
31 - -     0.33 -  
859 728 - 33.3 311   -  
666 - 14 32.2   133 332

Heat Treatment of steel grade T7

Heat treated : 1383°C - 1581°C

Technological Curves of steel grade T7

Cross Reference Table (Equivalent Grade) of T7

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