Steel tubes. Seamless austenitic steel tubes for use at high temperatures. Dimensions (with normal tolerances). Technical conditions of delivery
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.04 | 0.08 | ||
| Si | - | 0.75 | ||
| Mn | - | 2.00 | ||
| P | - | 0.040 | ||
| S | - | 0.015 | ||
| Cr | 17.00 | 19.00 | ||
| Mo | 11.00 | 13.00 | ||
| Ni | - | - | ||
| B | 0.0015 | 0.0060 | ||
| Nb | 10×C | - |
Steel tubes. Seamless austenitic steel tubes for use at high temperatures. Dimensions (with normal tolerances). Technical conditions of delivery
| Proof strength Rp0.2 (MPa) |
Tensile strength Rm (MPa) |
Impact energy KV (J) |
Elongation at fracture A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | Brinell hardness (HBW) |
|---|---|---|---|---|---|---|
| 765 (≥) | 647 (≥) | 14 | 21 | 44 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 312 |
| Property | Density kg/dm3 |
Temperature T °C/F |
Specific heat J / kgK |
Thermal conductivity W/mK |
Electric resistance µΩ·cm |
Modulus of elasticity kN/mm2 |
Expansion rate |
|---|---|---|---|---|---|---|---|
| 992 (≥) | 186 (≥) | 34 | 34 | 44 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 324 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 581 | 767 | 253 |
We can customize the production of Z6CNNb18-12B grade, contact us for the best solution.
–sales@specificsteel.com