France AFNOR NF A 35-578, NF A 49-214, Z6CNNb18-12B 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 | Z6CNNb18-12B | 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 | Mo | Ni | B | Nb |
---|---|---|---|---|---|---|---|---|---|
0.04 -0.08 | ≤0.75 | ≤2.00 | ≤0.040 | ≤0.015 | 17.00 -19.00 | 11.00 -13.00 | ≤ ≥ | 0.0015 -0.0060 | 10×C - ≥ |
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) |
---|---|---|---|---|---|---|
633 (≥) | 559 (≥) | 41 | 33 | 14 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 211 |
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 |
---|---|---|---|---|---|---|---|
34 | - | - | 0.24 | - | |||
138 | 944 | - | 34.3 | 232 | - | ||
422 | - | 14 | 14.2 | 244 | 212 |
Heat treated : 1814°C - 1618°C
Grade | Standard | Country | Application |
---|---|---|---|
Z6CNNb18-12B | |||
Z6CNNb18-12B |
NF A 35-578 | Iron and steel. Stainless steel for high temperature application | NF-A-35-578.pdf |
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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