H70MΦB Stainless Steels

H70MΦB - Specification & Application

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

Chemical composition(wt.%) of H70MΦB grade:

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.02
Si - 0.10
Mn - 0.50
P - -
S - -
Cr - 0.30
Ni - remaining
Mo 25.00 27.00
Al - -
Ti - 0.15
Fe - 0.80
V 1.40 1.70
W 0.10 0.45

H70MΦB - Detail

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

Mechanical properties of grade H70MΦB

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)
981 (≥) 232 (≥) 34 24 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 114

Physical properties of grade H70MΦB

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
764 (≥) 865 (≥) 21 11 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 124
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
357 485 516

Equivalent Grade

Equivalent Products

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