France AFNOR NF A 49-247, TSZ6CNT18-10 Specialsteel Steel tubes. Tubes welded longitudinally for heat exchangers. Austenitic stainless steels. Dimensions. Technical delivery conditions and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Standard | Country | Application | 
|---|---|---|---|---|---|
| Steel Grades | Specialsteel | TSZ6CNT18-10 | AFNOR | France | Steel tubes. Tubes welded longitudinally for heat exchangers. Austenitic stainless steels. Dimensions. Technical delivery conditions | 
| C | Si | Mn | P | S | Cr | Mo | Ni | Ti | 
|---|---|---|---|---|---|---|---|---|
| ≤0.060 | ≤0.75 | ≤2.00 | ≤0.040 | ≤0.015 | 17.00 -19.00 | ≤ ≥ | 9.00 -12.00 | 5(C+N) -0.70 | 
| 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) | 
|---|---|---|---|---|---|---|
| 237 (≥) | 487 (≥) | 33 | 21 | 11 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 213 | 
| 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 | 
|---|---|---|---|---|---|---|---|
| 21 | - | - | 0.13 | - | |||
| 157 | 224 | - | 14.3 | 334 | - | ||
| 822 | - | 23 | 12.2 | 431 | 223 | 
Heat treated : 1191°C - 1567°C
| Grade | Standard | Country | Application | 
|---|---|---|---|
| Z6CNT18-10 | |||
| Z6CNT18-10 | |||
| Z6CNT18-10B | 
| NF A 49-247 | Steel tubes. Tubes welded longitudinally for heat exchangers. Austenitic stainless steels. Dimensions. Technical delivery conditions | NF-A-49-247.pdf | 
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