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X 12 CrNi 17 7

Germany DIN X12CrNi177 Stainless steel wire and strip for springs; technical delivery conditions and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: X12CrNi177 / X 12 CrNi 17 7
Category Grade Standard Region/Area Standard Content
Metals X 12 CrNi 17 7 DIN 17224 Germany Stainless steel wire and strip for springs; technical delivery conditions

Chemical composition(mass fraction)(wt.%) of the X 12 CrNi 17 7

Element Min Max Similar
Si - 1.0000 -
Ni 7.0000 8.0000 -
Mn - 2.0000 -
Cr 16.0000 18.0000 -
C - 0.1500 -
Si - 1.5000 -
S - 0.0300 -
P - 0.0450 -
Ni 6.0000 9.0000 -
Mo - 0.8000 -
Mn - 2.0000 -
Cr 16.0000 18.0000 -
C - 0.1200 -

Mechanical Properties of steel grade X 12 CrNi 17 7

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
681 (≥) 358 (≥) 13 14 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 443

Physical Properties of steel grade X 12 CrNi 17 7

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
22 - -     0.33 -  
733 668 - 13.3 134   -  
748 - 13 11.2   414 323

Heat Treatment of steel grade X 12 CrNi 17 7

Heat treated : 1396°C - 1344°C

Technological Curves of steel grade X 12 CrNi 17 7

Cross Reference Table (Equivalent Grade) of X 12 CrNi 17 7

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