Grades | Stainless Steels | Z20CN21-12Az

AFNOR Z20CN21-12Az

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Z20CN21-12Az Application:Valve steels and alloys for internal combustion engines

Chemical composition(mass fraction)(wt.%) of the Z20CN21-12Az
Elements Min.(≥) Max.(≤) Similar Remarks
C 0.15 0.25
Si 0.70 1.30
Mn 1.00 1.50
P - 0.040
S - 0.030
Cr 20.00 22.00
Ni 10.50 12.50
Mo - -
N 0.15 0.25

Mechanical properties of grade Z20CN21-12Az

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition HBW
443 (≥) 913 (≥) 32 11 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 113

Physical properties of grade Z20CN21-12Az

Property Density
kg/dm3
Temperature T
°C/F
Specific heat
J / kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
846 (≥) 689 (≥) 41 32 22 Solution and Aging, Annealing, Ausaging, Q+T,etc
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
- - -
557 445 827 - - -

Z20CN21-12Az Range of products
Product type Products Dimension Processes Deliver Status
Plates / Sheets Plates / Sheets 0.08-200mm(T)*W*L Forging, hot rolling and cold rolling Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar Round Bar, Flat Bar, Square Bar Φ8-1200mm*L Forging, hot rolling and cold rolling, Cast Black, Rough Turning, Shot Blasting,
Coil / Strip Steel Coil /Steel Strip 0.03-16.0x1200mm Cold-Rolled & Hot-Rolled Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes Seamless Pipes/Tubes, Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion, Cold Drawn, Welded Annealed, Solution and Aging, Q+T, ACID-WASHED