X12CrNi17-7 Stainless Steels to ISO 6931-2

X12CrNi17-7 - Specification & Application

  • ISO 6931-2 - Stainless steels for springs - Part 2: Narrow strip

Stainless steels for springs - Part 2: Narrow strip

Chemical composition(wt.%) of X12CrNi17-7 grade: to ISO 6931-2

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.12
Si - 1.50
Mn - 2.00
P - 0.045
S - 0.030
Cr 16.00 18.00
Mo - 0.80
Ni 6.00 9.00

X12CrNi17-7 - Detail

Stainless steels for springs - Part 2: Narrow strip

Mechanical properties of grade X12CrNi17-7 ISO 6931-2

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)
162 (≥) 733 (≥) 22 11 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 141

Physical properties of grade X12CrNi17-7 ISO 6931-2

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
455 (≥) 993 (≥) 42 31 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 223
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
188 576 255

Equivalent Products

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