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AFNOR Z45CS9 Details

Valve steels and alloys for internal combustion engines

AFNOR Z45CS9 Standard Download

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Z45CS9 Application:Valve steels and alloys for internal combustion engines
Category Type Grade Designations
Grades Stainless Steels Z45CS9 France - AFNOR , NF A 35-579 - Valve steels and alloys for internal combustion engines
Chemical composition(mass fraction)(wt.%)
Elements Min.(≥) Max.(≤) Similar Remarks
C 0.40 0.50
Si 2.70 3.30
Mn - 0.80
P - 0.040
S - 0.030
Cr 8.00 10.00
Ni - -
Mo - -
Mechanical properties of grade Z45CS9
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)
664 (≥) 242 (≥) 21 12 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 141
Physical properties of grade Z45CS9
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
624 (≥) 716 (≥) 31 21 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 121
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
483 832 326
Z45CS9 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
Cross Reference Table(Equivalent Grade)
Grade Standard Country Application
Z45CS9 AFNOR France
Valve steels and alloys for internal combustion engines