Z80CNS20-02 Stainless Steels to NF A 35-579

Z80CNS20-02 - Specification & Application

  • NF A 35-579 - Valve steels and alloys for internal combustion engines

Valve steels and alloys for internal combustion engines

Chemical composition(wt.%) of Z80CNS20-02 grade: to NF A 35-579

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.75 0.85
Si 1.75 2.50
Mn - 0.80
P - 0.040
S - 0.030
Cr 19.50 21.00
Ni 1.00 1.70
Mo - -

Z80CNS20-02 - Detail

Valve steels and alloys for internal combustion engines

Mechanical properties of grade Z80CNS20-02 NF A 35-579

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)
688 (≥) 746 (≥) 41 41 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 333

Physical properties of grade Z80CNS20-02 NF A 35-579

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
525 (≥) 161 (≥) 43 24 31 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
671 416 182

Equivalent Grade

Equivalent Products

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