3Cr18Mn12Si2N Stainless Steels to GB/T 1221 (1992)

3Cr18Mn12Si2N - Specification & Application

  • GB/T 1221 (1992) - Heat-resisting steel bars

Heat-resisting steel bars

Chemical composition(wt.%) of 3Cr18Mn12Si2N grade: to GB/T 1221 (1992)

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.22 0.30
Si 1.40 2.20
Mn 10.50 12.50
P - 0.35
S - 0.03
Cr 17.00 19.00
N 0.22 0.33

3Cr18Mn12Si2N - Detail

3Cr18Mn12Si2N

Mechanical properties of grade 3Cr18Mn12Si2N GB/T 1221 (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)
364 (≥) 639 (≥) 31 44 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 114

Physical properties of grade 3Cr18Mn12Si2N GB/T 1221 (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
268 (≥) 881 (≥) 42 13 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 242
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
911 785 439

Equivalent Products

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