X5CrNiMo17-12 Stainless Steels to ISO 9327-5 (1999)

X5CrNiMo17-12 - Specification & Application

  • ISO 9327-5 (1999) - Steel forgings and rolled or forged bars for pressure purposes - Technical delivery conditions - Part 5: Stainless steels
  • ISO 9329-4 (1997) - Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 4: Austenitic stainless steels
  • ISO 9330-6 (1997) - Welded steel tubes for pressure purposes - Technical delivery conditions - Part 6: Longitudinally welded austenitic stainless steel tubes
  • ISO 9328-5 - Steel plates and strips for pressure purposes - Technical delivery conditions - Part 5: Weldable fine grain steels, thermomechanically rolled

Welded steel tubes for pressure purposes - Technical delivery conditions - Part 6: Longitudinally welded austenitic stainless steel tubes

Chemical composition(wt.%) of X5CrNiMo17-12 grade: to ISO 9327-5 (1999)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.07
Si - 1.00
Mn - 2.00
P - 0.045
S - 0.030
Cr 16.50 18.50
Mo 10.50 13.50
Ni 2.00 2.50
B 0.001 0.005

X5CrNiMo17-12 - Detail

Welded steel tubes for pressure purposes - Technical delivery conditions - Part 6: Longitudinally welded austenitic stainless steel tubes

Mechanical properties of grade X5CrNiMo17-12 ISO 9327-5 (1999)

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 (≥) 734 (≥) 22 42 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 433

Physical properties of grade X5CrNiMo17-12 ISO 9327-5 (1999)

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
623 (≥) 795 (≥) 31 21 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 333
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
415 249 247

Equivalent Products

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