X8Ni9

X8Ni9 Stainless Steels to NF EN 10028-4

X8Ni9 - Specification & Application

  • NF EN 10028-4 - Flat products made of steels for pressure purposes - Part 4: Nickel alloy steels with specified low temperature properties
  • NF EN 10222-3 - Steel forgings for pressure purposes - Part 3: Nickel steels with specified low temperature properties
  • NF EN 10269 - Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties

Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties

Chemical composition(wt.%) of X8Ni9 grade: to NF EN 10028-4

Elements Min.（≥） Max.（≤） Similar Remarks
C - 0.10
Si - 0.35
Mn 0.30 0.80
P - 0.020
S - 0.010
Cr - -
Ni 8.50 10.00
Mo - 0.10
V - 0.05

X8Ni9 - Detail

Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties

Mechanical properties of grade X8Ni9 NF EN 10028-4

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)
363 (≥) 642 (≥) 12 44 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 311

Physical properties of grade X8Ni9 NF EN 10028-4

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
361 (≥) 918 (≥) 34 24 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 233
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0) N/mm2		 Creep rupture strength
(10000h)
(Rp1,0) N/mm2
719 587 726

Equivalent Grade

1 X8Ni9 2 X8Ni9 3 X8Ni9 4 X8Ni9KK 5 EN X8Ni9 6 X8Ni9 7 1.5662

Equivalent Products

Product shapes we supply:

We can customize the production of X8Ni9 grade, contact us for the best solution.
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