631CPS Stainless Steels

631CPS - Specification & Application

CNS standard spring cold rolled stainless steel strip

Chemical composition(wt.%) of 631CPS grade:

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.09
Si - 1.00
Mn - 1.00
P - 0.040
S - 0.030
Cr 16.00 18.00
Ni 6.50 7.50
Al 0.75 1.50

631CPS - Detail

CNS standard spring cold rolled stainless steel strip

Mechanical properties of grade 631CPS

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)
181 (≥) 452 (≥) 12 32 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 113

Physical properties of grade 631CPS

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
726 (≥) 865 (≥) 11 32 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 312
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
781 234 481

Equivalent Grade

Equivalent Products

We can customize the production of 631CPS grade, contact us for the best solution.
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