S31000 Stainless Steels

S31000 - Specification & Application

Austenitic Chromium Nickel Heat Resisting Steel

Chemical composition(wt.%) of S31000 grade:

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.25
Si - 1.50
Mn - 2.00
P - 0.045
S - 0.03
Cr 24.00 26.00
Ni 19.00 22.00
Mo - 1.00
Cu - 1.00

S31000 - Detail

Austenitic Chromium Nickel Heat Resisting Steel

Mechanical properties of grade S31000

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)
244 (≥) 395 (≥) 34 42 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 422

Physical properties of grade S31000

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
913 (≥) 826 (≥) 43 34 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 332
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
737 321 339
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