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)
256 (≥) 164 (≥) 14 13 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 311

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
346 (≥) 541 (≥) 31 43 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 221
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
891 351 119

Equivalent Grade

Equivalent Products

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