France AFNOR NF A 49-214, 316F22 Specialsteel Steel tubes. Seamless austenitic steel tubes for use at high temperatures. Dimensions (with normal tolerances). Technical conditions of delivery and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Standard | Country | Application | 
|---|---|---|---|---|---|
| Steel Grades | Specialsteel | 316F22 | AFNOR | France | Steel tubes. Seamless austenitic steel tubes for use at high temperatures. Dimensions (with normal tolerances). Technical conditions of delivery | 
| C | Si | Mn | P | S | Cr | Ni | Mo | B | Nb+Ta | 
|---|---|---|---|---|---|---|---|---|---|
| 0.04 -0.08 | ≤1.00 | ≤2.00 | ≤0.040 | ≤0.030 | 16.00 -18.00 | 12.00 -14.00 | 2.00 -2.50 | 0.0015 -0.0060 | 8×C -1.00 | 
| 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) | 
|---|---|---|---|---|---|---|
| 187 (≥) | 436 (≥) | 23 | 23 | 31 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 123 | 
| 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 | - | - | 0.32 | - | |||
| 745 | 815 | - | 24.3 | 223 | - | ||
| 949 | - | 23 | 34.2 | 332 | 323 | 
Heat treated : 1246°C - 1677°C
| Grade | Standard | Country | Application | 
|---|---|---|---|
| Z6CNDNb17-12 | |||
| Z6CNDNb17-12 | |||
| Z6CNDNb17.13B | |||
| Z6CNDT17-13B | |||
| Z6CND17-13B | |||
| Z10CNWT17-13B | |||
| Z8CNDT17.13B | |||
| A35-586 316F22 | 
| NF A 49-214 | Steel tubes. Seamless austenitic steel tubes for use at high temperatures. Dimensions (with normal tolerances). Technical conditions of delivery | NF-A-49-214.pdf | 
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