AISI 431 Stainless Steels

AISI 431 - Specification & Application

AISI 431

Chemical composition(wt.%) of AISI 431 grade:

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.20
Si - 1.00
Mn - 1.00
P - 0.04
S - 0.03
Cr 15.0 17.0
Ni 1.25 2.50

AISI 431 - Detail

AISI 431

Mechanical properties of grade AISI 431

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)
771 (≥) 661 (≥) 41 22 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 143

Physical properties of grade AISI 431

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
943 (≥) 918 (≥) 42 23 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 323
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
112 161 784

Equivalent Products

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