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AFNOR Z6CNDNb18-12 Details

Iron and steel. Austenitic and austenic-ferritic stainless steels plates for boilers and pressure vessels

AFNOR Z6CNDNb18-12 Standard Download

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Z6CNDNb18-12 Application:Iron and steel. Austenitic and austenic-ferritic stainless steels plates for boilers and pressure vessels
Category Type Grade Designations
Grades Stainless Steels Z6CNDNb18-12 France - AFNOR , NF A 35-573 - Stainless steels for general purposes. Plates, wide strips and strips
NF A 36-209 - Iron and steel. Austenitic and austenic-ferritic stainless steels plates for boilers and pressure vessels
Chemical composition(mass fraction)(wt.%)
Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.060
Si - 0.75
Mn - 2.00
P - 0.040
S - 0.015
Cr 16.50 18.50
Mo 2.50 3.00
Ni 11.00 13.00
Nb+Ta 10×C 0.70
Mechanical properties of grade Z6CNDNb18-12
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)
177 (≥) 887 (≥) 34 41 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 314
Physical properties of grade Z6CNDNb18-12
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
474 (≥) 147 (≥) 21 41 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 324
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
432 459 941
Z6CNDNb18-12 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
Z6CNDNb18-12 AFNOR France
Iron and steel. Austenitic and austenic-ferritic stainless steels plates for boilers and pressure vessels
Z6CNDNb18-12M AFNOR France
Foundry products - Cast steel and nickel alloy castings for pumps, valves and fittings (enclosures and internal components)