France AFNOR NF A 35-573, NF A 35-574, NF A 36-209, NF A 49-244, Z7CN18-09 Specialsteel Steel tubes - Welded austenitic stainless and austenitic ferritic steel rolled tubes for pressure service - Dimensions, technical conditions for delivery and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Standard | Country | Application | 
|---|---|---|---|---|---|
| Steel Grades | Specialsteel | Z7CN18-09 | AFNOR | France | Steel tubes - Welded austenitic stainless and austenitic ferritic steel rolled tubes for pressure service - Dimensions, technical conditions for delivery | 
| C | Si | Mn | P | S | Cr | Mo | Ni | 
|---|---|---|---|---|---|---|---|
| ≤0.070 | ≤0.75 | ≤2.00 | ≤0.040 | ≤0.015 | 17.00 -19.00 | ≤ ≥ | 8.00 -10.00 | 
| Yield Rp0.2 (MPa)  | 
                                            Tensile Rm (MPa)  | 
                                            Impact KV/Ku (J)  | 
                                            Elongation A (%)  | 
                                            Reduction in cross section on fracture Z (%)  | 
                                            As-Heat-Treated Condition | Brinell hardness (HBW) | 
|---|---|---|---|---|---|---|
| 155 (≥) | 928 (≥) | 23 | 32 | 13 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 113 | 
| Temperature (°C)  | 
                                        Modulus of elasticity (GPa)  | 
                                        Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and | Thermal conductivity (W/m·°C)  | 
                                        Specific thermal capacity (J/kg·°C)  | 
                                        Specific electrical resistivity (Ω mm²/m)  | 
                                        Density (kg/dm³)  | 
                                        Poisson’s coefficient, ν | 
|---|---|---|---|---|---|---|---|
| 43 | - | - | 0.41 | - | |||
| 443 | 391 | - | 43.3 | 412 | - | ||
| 494 | - | 31 | 13.2 | 114 | 421 | 
Heat treated : 1514°C - 1971°C
| NF A 35-573 | Stainless steels for general purposes. Plates, wide strips and strips | NF-A-35-573.pdf | 
| NF A 35-574 | Iron and steel. Stainless steel for general purposes. Semi- finished products, bars and wire rod | NF-A-35-574.pdf | 
| NF A 36-209 | Iron and steel. Austenitic and austenic-ferritic stainless steels plates for boilers and pressure vessels | NF-A-36-209.pdf | 
| NF A 49-244 | Steel tubes - Welded austenitic stainless and austenitic ferritic steel rolled tubes for pressure service - Dimensions, technical conditions for delivery | NF-A-49-244.pdf | 
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