Z21CDV12 Stainless Steels to NF A 35-578

Z21CDV12 - Specification & Application

  • NF A 35-578 - Iron and steel. Stainless steel for high temperature application

Iron and steel. Stainless steel for high temperature application

Chemical composition(wt.%) of Z21CDV12 grade: to NF A 35-578

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.18 0.24
Si 0.10 0.50
Mn 0.30 0.80
P - 0.0350
S - 0.0350
Ni 0.30 0.80
Cr 11.0 12.50
Mo 0.80 1.20
V 0.25 0.35

Z21CDV12 - Detail

Iron and steel. Stainless steel for high temperature application

NF A 35-578 Iron and steel. Stainless steel for high temperature application; Replaced by NF EN 10302:2003

Mechanical properties of grade Z21CDV12 NF A 35-578

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)
277 (≥) 681 (≥) 21 33 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 332

Physical properties of grade Z21CDV12 NF A 35-578

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
714 (≥) 795 (≥) 41 12 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 341
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
145 891 867
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