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AFNOR Z3CTNb18 Details

Iron and steel. Stainless steel for high temperature application

AFNOR Z3CTNb18 Standard Download

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Z3CTNb18 Application:Iron and steel. Stainless steel for high temperature application
Category Type Grade Designations
Grades Stainless Steels Z3CTNb18 France - AFNOR , NF A 35-573 - Stainless steels for general purposes. Plates, wide strips and strips
NF A 35-578 - Iron and steel. Stainless steel for high temperature application
Chemical composition(mass fraction)(wt.%)
Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.030
Si - 0.75
Mn - 0.08
P - 0.030
S - 0.015
Cr 17.50 18.50
Mo - -
Ni - -
N - 0.025
Ti 0.10 0.50
Nb 9×C 0.30
Mechanical properties of grade Z3CTNb18
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)
844 (≥) 984 (≥) 23 34 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 412
Physical properties of grade Z3CTNb18
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
795 (≥) 345 (≥) 23 22 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 141
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
537 119 494
Z3CTNb18 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
Z3CTNb18 AFNOR France
Iron and steel. Stainless steel for high temperature application