1Cr25Ni20Si2 Stainless Steels to GB 4238 (1992)

1Cr25Ni20Si2 - Specification & Application

  • GB 4238 (1992) - Heat-resisting steel sheets and plates
  • GB/T 1221 (1992) - Heat-resisting steel bars

Heat-resisting steel sheets and plates

Chemical composition(wt.%) of 1Cr25Ni20Si2 grade: to GB 4238 (1992)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.20
S 1.50 2.50
Mn - 1.50
P - 0.035
S - 0.030
Ni 18.00 21.00
Cr 24.00 27.00

1Cr25Ni20Si2 - Detail

1Cr25Ni20Si2

Mechanical properties of grade 1Cr25Ni20Si2 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)
939 (≥) 532 (≥) 12 24 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 313

Physical properties of grade 1Cr25Ni20Si2 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
937 (≥) 397 (≥) 42 31 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 222
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
558 852 635

Equivalent Grade

Equivalent Products

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