France AFNOR NF A 49-214, NF A 35-578, 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 | Ni | Mo | B | Nb+Ta |
---|---|---|---|---|---|---|---|---|---|
0.04 -0.08 | ≤1.00 | ≤2.00 | ≤0.040 | ≤0.030 | 17.00 -19.00 | 11.00 -13.00 | ≤ ≥ | 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) |
---|---|---|---|---|---|---|
846 (≥) | 319 (≥) | 44 | 34 | 23 | 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 |
---|---|---|---|---|---|---|---|
23 | - | - | 0.34 | - | |||
231 | 128 | - | 33.3 | 241 | - | ||
499 | - | 22 | 32.2 | 314 | 142 |
Heat treated : 1161°C - 1744°C
Grade | Standard | Country | Application |
---|---|---|---|
Z6CNNb18-10 | |||
Z6CNNb18-10 | |||
Z6CNNb18-12B | |||
Z6CNNb18-12B | |||
Z6CNNb18.12B | |||
AMS 6512B | |||
Z6CNT18.12B | |||
20X12BHMΦ | |||
15X12BHMΦ | |||
18X12BMBΦP | |||
A35-586 347F20 |
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 |
NF A 35-578 | Iron and steel. Stainless steel for high temperature application | NF-A-35-578.pdf |
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