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China GB H25 凿岩用锥体连接中空六角形钎杆( and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: H25 / H25
Category Grade Standard Region/Area Standard Content
Metals H25 GB/T 6481 China 凿岩用锥体连接中空六角形钎杆(

Chemical composition(mass fraction)(wt.%) of the H25

Element Min Max Similar

Mechanical Properties of steel grade H25

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)
773 (≥) 597 (≥) 31 22 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 122

Physical Properties of steel grade H25

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
23 - -     0.22 -  
788 722 - 21.3 332   -  
716 - 32 44.2   242 311

Heat Treatment of steel grade H25

Heat treated : 1287°C - 1677°C

Technological Curves of steel grade H25

Cross Reference Table (Equivalent Grade) of H25

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