X5CrNi18-9

X5CrNi18-9 Stainless Steels to ISO 16143-1 (2004)

X5CrNi18-9 - Specification & Application

  • ISO 16143-1 (2004) - Stainless steels for general purposes -- Part 1: Flat products
  • ISO 16143-2 (2004) - Stainless steels for general purposes -- Part 2: Semi-finished products, bars, rods and sections
  • ISO 16143-3 (2005) - Stainless steels for general purposes -- Part 3: Wire
  • ISO 6931-2 - Stainless steels for springs - Part 2: Narrow strip
  • ISO 9327-5 - Steel forgings and rolled or forged bars for pressure purposes - Technical delivery conditions - Part 5: Stainless steels
  • ISO 9328-5 - Steel plates and strips for pressure purposes - Technical delivery conditions - Part 5: Weldable fine grain steels, thermomechanically rolled
  • ISO 9329-4 - Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 4: Austenitic stainless steels
  • ISO 9330-6 - Welded steel tubes for pressure purposes - Technical delivery conditions - Part 6: Longitudinally welded austenitic stainless steel tubes
  • ISO/TS 15510 (2003) - Stainless steels - Chemical composition

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

Chemical composition(wt.%) of X5CrNi18-9 grade: to ISO 16143-1 (2004)

Elements Min.（≥） Max.（≤） Similar Remarks
C - 0.07
Si - 1.00
Mn - 2.00
P - 0.040
S - 0.030
Cr 17.00 19.00
Mo 8.00 11.00
Ni - -

X5CrNi18-9 - Detail

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

Mechanical properties of grade X5CrNi18-9 ISO 16143-1 (2004)

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)
878 (≥) 555 (≥) 23 31 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 422

Physical properties of grade X5CrNi18-9 ISO 16143-1 (2004)

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
342 (≥) 783 (≥) 43 21 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 321
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0) N/mm2		 Creep rupture strength
(10000h)
(Rp1,0) N/mm2
514 544 637

Equivalent Grade

1 ISO X5CrNi18-9 2 X5CrNi18 9E 3 ISO X5CrNi18-9 Tube 4 X5CrNi18-9 5 X5CrNi18 9E 6 X5CrNi18-9 7 X5CrNi18-9

Equivalent Products

Product shapes we supply:

We can customize the production of X5CrNi18-9 grade, contact us for the best solution.
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