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Description

Russia GOST XH78T Specialsteel Russia GOCT standard deformation of high temperature alloy grades and chemical composition and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: XH78T
Category Class Grade Standard Country Application
Steel GradesSpecialsteel XH78T GOST Russia Russia GOCT standard deformation of high temperature alloy grades and chemical composition

Chemical composition(mass fraction)(wt.%) of the XH78T

C Si Mn P S Cr Ni Mo Al Ti Fe
≤0.12 ≤0.80 ≤0.70 ≤0.015 ≤0.012 19.00 -22.00 ≤remaining ≤ ≥ ≤0.15 0.15 -0.35 ≤1.00

Mechanical Properties of steel grade XH78T

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)
329 (≥) 874 (≥) 44 33 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 211

Physical Properties of steel grade XH78T

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
34 - -     0.34 -  
499 251 - 14.3 312   -  
195 - 32 31.2   243 113

Heat Treatment of steel grade XH78T

Heat treated : 1631°C - 1323°C

Technological Curves of steel grade XH78T

Cross Reference Table (Equivalent Grade) of XH78T

Grade Standard Country Application
XH78T

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