International ISO ISO 9329-4, X7CrNiNb18-11 Specialsteel Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 4: Austenitic stainless steels and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Type | Standard | Country | Application | 
|---|---|---|---|---|---|---|
| Steel Grades | Specialsteel | X7CrNiNb18-11 | Austenite | ISO | International | Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 4: Austenitic stainless steels | 
| C | Si | Mn | P | S | Cr | Mo | Ni | 
|---|---|---|---|---|---|---|---|
| 0.04 -0.10 | ≤1.00 | ≤2.00 | ≤0.040 | ≤0.030 | 17.00 -19.00 | 9.00 -13.00 | ≤ ≥ | 
| 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) | 
|---|---|---|---|---|---|---|
| 136 (≥) | 148 (≥) | 34 | 24 | 33 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 413 | 
| 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 | 
|---|---|---|---|---|---|---|---|
| 23 | - | - | 0.22 | - | |||
| 718 | 376 | - | 12.3 | 434 | - | ||
| 119 | - | 32 | 21.2 | 132 | 314 | 
Heat treated : 1447°C - 1997°C
| ISO 9329-4 | Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 4: Austenitic stainless steels | ISO-9329-4.pdf | 
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