France AFNOR NF A 49-245, NF A 49-647, TSZ8C17 Specialsteel Steel tubes. Structural welded tubes, circular, square, rectangular or oval, in ferritic or austenitic stainless steels. Dimensions. Technical delivery conditions and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Standard | Country | Application |
|---|---|---|---|---|---|
| Steel Grades | Specialsteel | TSZ8C17 | AFNOR | France | Steel tubes. Structural welded tubes, circular, square, rectangular or oval, in ferritic or austenitic stainless steels. Dimensions. Technical delivery conditions |
| C | Si | Mn | P | S | Cr | Mo | Ni |
|---|---|---|---|---|---|---|---|
| ≤0.080 | ≤0.75 | ≤0.75 | ≤0.040 | ≤0.015 | 16.00 -17.50 | ≤ ≥ | ≤ ≥ |
| 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) |
|---|---|---|---|---|---|---|
| 668 (≥) | 783 (≥) | 44 | 11 | 21 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 212 |
| 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 |
|---|---|---|---|---|---|---|---|
| 12 | - | - | 0.33 | - | |||
| 825 | 277 | - | 31.3 | 121 | - | ||
| 282 | - | 33 | 32.2 | 114 | 334 |
Heat treated : 1642°C - 1272°C
| NF A 49-245 | Steel tubes. Longitudinally pressure welded tubes from non alloy and ferritic alloy steels for heat exchangers in diameters from 15, 9 mm and 76, 1 mm inclusive. Dimensions. Technical delivery conditions | NF-A-49-245.pdf |
| NF A 49-647 | Steel tubes. Structural welded tubes, circular, square, rectangular or oval, in ferritic or austenitic stainless steels. Dimensions. Technical delivery conditions | NF-A-49-647.pdf |
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