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AFNOR Z6CNNb18-10M Details

Z6CNNb18-10M Application:Foundry products. Austenitic and austeno-ferritic stainless cast steel

Category Type Grade Designations
Grades Stainless Steels Z6CNNb18-10M France - AFNOR , NF A 32-055 - Foundry products. Weldable cast steels for pressure vessels
NF A 32-060 - Foundry products - Cast steel and nickel alloy castings for pumps, valves and fittings (enclosures and internal components)
NF A 32-056 - Foundry products. Austenitic and austeno-ferritic stainless cast steel

Chemical composition(wt.%) of Z6CNNb18-10M grade: NF A 32-055

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.060
Si - 0.75
Mn - 2.00
P - 0.040
S - 0.015
Cr 17.00 19.00
Mo - -
Ni 9.00 11.00
N - 0.050
Nb 10×C 1.00
Foundry products. Austenitic and austeno-ferritic stainless cast steel

Mechanical properties of grade Z6CNNb18-10M NF A 32-055

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)
547 (≥) 339 (≥) 24 33 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 123

Physical properties of grade Z6CNNb18-10M NF A 32-055

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
159 (≥) 952 (≥) 41 43 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 434
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
824 388 274

Z6CNNb18-10M - Form of Supply

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
Z6CNNb18-10 AFNOR France
Iron and steel. Austenitic and austenic-ferritic stainless steels plates for boilers and pressure vessels
TUZ6CNNb18-10 AFNOR France
Steel pipes. Seamless pipes for furnaces. Austenitic stainless steels. Dimensions (with normal or reduced tolerances). Technical delivery conditions
Z6CNNb18-10F AFNOR France
General purpose forgings. Stainless steels
Z6CNNb18-10M AFNOR France
Foundry products. Austenitic and austeno-ferritic stainless cast steel

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