H70MΦ Stainless Steels

H70MΦ - Specification & Application

Russia GOCT standard deformation of high temperature alloy grades and chemical composition

Chemical composition(wt.%) of H70MΦ grade:

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.05
Si - 0.20
Mn - 0.50
P - 0.020
S - 0.020
Cr - 0.30
Ni - remaining
Mo 25.00 29.00
Al - -
Ti - 0.15
Fe - 0.80
V 1.40 1.70

H70MΦ - Detail

Russia GOCT standard deformation of high temperature alloy grades and chemical composition

Mechanical properties of grade H70MΦ

Proof strength
Rp0.2 (MPa)
Tensile strength
Rm (MPa)
Impact energy
KV (J)
Elongation at fracture
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
311 (≥) 543 (≥) 23 11 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 423

Physical properties of grade H70MΦ

Property Density
kg/dm3
Temperature T
°C/F
Specific heat
J / kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
Modulus of elasticity
kN/mm2
Expansion rate
965 (≥) 888 (≥) 21 11 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 243
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
785 171 394

Equivalent Products

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