S41040 Stainless Steels

S41040 - Specification & Application

Martensitic Chromium Stainless Steel with Columbium

Chemical composition(wt.%) of S41040 grade:

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.15
Mn - 1.00
Si - 1.00
P - 0.04
S - 0.03
Cr 11.50 13.50
Ni - -
Mo - -
Nb 0.05 0.20

S41040 - Detail

Martensitic Chromium Stainless Steel with Columbium

Mechanical properties of grade S41040

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)
544 (≥) 777 (≥) 44 32 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 423

Physical properties of grade S41040

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
218 (≥) 627 (≥) 33 14 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 343
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
771 183 454
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