1Cr12 Stainless Steels to GB 4238 (1992)

1Cr12 - Specification & Application

  • GB 4238 (1992) - Heat-resisting steel sheets and plates
  • GB/T 1220 (1992) - Stainless steel bars
  • GB/T 3280 (2007) - Cold rolled stainless steel sheets and plates
  • GB/T 4226 (2004) - Cold finished stainless steel bars
  • GB/T 4237 (1992) - Hot rolled stainless steel sheets and plates
  • GB/T 4239 (1991) - Cold rolled stainless steel and heat resisting steel strips
  • GB/T 8732 (1988) - Steels of blade for steam turbine

Heat-resisting steel sheets and plates

Chemical composition(wt.%) of 1Cr12 grade: to GB 4238 (1992)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.15
Si - 0.50
Mn - 1.00
P - 0.035
S - 0.030
Ni - 0.60
Cr 11.50 13.00

1Cr12 - Detail

1Cr12

Mechanical properties of grade 1Cr12 GB 4238 (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)
788 (≥) 635 (≥) 31 42 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 211

Physical properties of grade 1Cr12 GB 4238 (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
626 (≥) 841 (≥) 23 31 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 444
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
119 278 769

Equivalent Products

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