X45CrSi9-3 Stainless Steels to NF EN 10090

X45CrSi9-3 - Specification & Application

  • NF EN 10090 - Valve steels and alloys for internal combustion engines

Valve steels and alloys for internal combustion engines

Chemical composition(wt.%) of X45CrSi9-3 grade: to NF EN 10090

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.40 0.50
Si 2.70 3.30
Mn - 0.60
P - 0.040
S - 0.030
Cr 8.00 10.00
Ni - 0.50
Mo - -

X45CrSi9-3 - Detail

Valve steels and alloys for internal combustion engines

Mechanical properties of grade X45CrSi9-3 NF EN 10090

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)
323 (≥) 711 (≥) 42 23 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 133

Physical properties of grade X45CrSi9-3 NF EN 10090

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
566 (≥) 639 (≥) 24 11 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 442
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
578 499 974

Equivalent Products

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