9Cr18MoV Stainless Steels to GB/T 1220 (1992)

9Cr18MoV - Specification & Application

  • GB/T 1220 (1992) - Stainless steel bars
  • GB/T 4356 (2002) - Stainless steel wire rods

Stainless steel bars

Chemical composition(wt.%) of 9Cr18MoV grade: to GB/T 1220 (1992)

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.85 0.95
Si - 0.80
Mn - 0.80
P - 0.035
S - 0.030
Ni - 0.60
Cr 17.00 19.00
Mo 1.00 1.30
V 0.07 0.12

9Cr18MoV - Detail

9Cr18MoV

Mechanical properties of grade 9Cr18MoV GB/T 1220 (1992)

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)
888 (≥) 514 (≥) 44 11 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 134

Physical properties of grade 9Cr18MoV GB/T 1220 (1992)

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
833 (≥) 611 (≥) 23 14 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 432
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
518 672 638

Equivalent Grade

Equivalent Products

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