7Mo Stainless Steels

7Mo - Specification & Application

High temperature alloys and other special alloys

Chemical composition(wt.%) of 7Mo grade:

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.10
Si 1.00 -
Mn 2.00 -
Cr 25.0 30.0
Ni 3.00 6.00
Mo 1.00 2.00

7Mo - Detail

High temperature alloys and other special alloys

Mechanical properties of grade 7Mo

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)
348 (≥) 237 (≥) 23 42 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 134

Physical properties of grade 7Mo

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
961 (≥) 269 (≥) 12 31 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 442
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
159 374 893
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