X6CrNiNb18-11 Stainless Steels to ISO 9329-4

X6CrNiNb18-11 - Specification & Application

  • ISO 9329-4 - Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 4: Austenitic stainless steels

Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 4: Austenitic stainless steels

Chemical composition(wt.%) of X6CrNiNb18-11 grade: to ISO 9329-4

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.08
Si - 1.00
Mn - 2.00
P - 0.040
S - 0.030
Cr 17.00 19.00
Mo 9.00 13.00
Ni - -

X6CrNiNb18-11 - Detail

Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 4: Austenitic stainless steels

Mechanical properties of grade X6CrNiNb18-11 ISO 9329-4

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)
653 (≥) 961 (≥) 11 32 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 432

Physical properties of grade X6CrNiNb18-11 ISO 9329-4

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
424 (≥) 149 (≥) 22 24 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 234
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
524 364 512

Equivalent Products

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