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Description

Russia ГОСТ H70MΦB Russia COST standard deformation of high temperature alloy and H70MΦB Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: H70MΦB
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy H70MΦB ГОСТ Russia Russia COST standard deformation of high temperature alloy
XH70BMTЮ
XH70BMTЮΦ
XH75MБTЮ
XH75BMЮ
XH77TЮP
XH77TЮPy
XH78T
XH80TБЮ 
H50K10
H70MΦ

Chemical composition(mass fraction)(wt.%) of the H70MΦB

C(%) Si(%) Mn(%) Cr(%) Ni(%) Mo(%) V(%) W(%) Ti(%) Fe(%)
Max 0.02 Max 0.10 Max 0.50 Max 0.30 Balance 25.0-27.0 1.40-1.70 0.10-0.45 Max 0.15 Max 0.08

Mechanical Properties of steel grade H70MΦB

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)
517 (≥) 678 (≥) 43 22 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 233

Physical Properties of steel grade H70MΦB

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
12 - -     0.13 -  
617 526 - 21.3 112   -  
635 - 23 12.2   243 224

Heat Treatment of steel grade H70MΦB

Heat treated : 1372°C - 1511°C

Technological Curves of steel grade H70MΦB

Cross Reference Table (Equivalent Grade) of H70MΦB

Grade Standard Country Application
H70MΦB ГОСТ Russia Russia COST standard deformation of high temperature alloy

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