Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | - | 0.01 | ||
| Mn | - | 0.30 | ||
| Si | - | 0.20 | ||
| P | - | 0.025 | ||
| S | - | 0.02 | ||
| Cr | 28.00 | 30.00 | ||
| Ni | 2.00 | 2.50 | ||
| Mo | 3.50 | 4.20 | ||
| N | - | 0.02 | ||
| Cu | - | 0.15 |
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) |
|---|---|---|---|---|---|---|
| 833 (≥) | 381 (≥) | 12 | 42 | 23 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 322 |
| 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 |
|---|---|---|---|---|---|---|---|
| 441 (≥) | 759 (≥) | 34 | 21 | 41 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 321 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 131 | 374 | 822 |
We can customize the production of SA-268 S44800 grade, contact us for the best solution.
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