Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | - | 0.01 | ||
| Si | - | 0.20 | ||
| Mn | - | 0.30 | ||
| P | - | - | ||
| S | - | - | ||
| Ni | - | 0.15 | ||
| Cr | 28.00 | 30.00 | ||
| Al | - | - | ||
| Cu | - | 0.15 | ||
| Ti | - | - | ||
| Fe | - | - | ||
| N | - | 0.02 | ||
| Mo | 3.50 | 4.20 |
Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service
| 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) |
|---|---|---|---|---|---|---|
| 522 (≥) | 199 (≥) | 31 | 44 | 42 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 113 |
| 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 |
|---|---|---|---|---|---|---|---|
| 467 (≥) | 375 (≥) | 11 | 34 | 41 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 344 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 596 | 587 | 648 |
We can customize the production of SA-268 29-4-2 grade, contact us for the best solution.
–sales@specificsteel.com