Welded Austenitic Stainless Steel Feedwater Heater Tubes
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | - | 0.02 | ||
| Mn | 2.00 | 4.00 | ||
| Si | - | 0.50 | ||
| P | - | 0.03 | ||
| S | - | 0.005 | ||
| Cr | 24.00 | 25.00 | ||
| Ni | 7.00 | 8.00 | ||
| Cu | 0.30 | 0.60 | ||
| N | 0.45 | 0.55 |
Welded Austenitic Stainless Steel Feedwater Heater Tubes
| 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) |
|---|---|---|---|---|---|---|
| 618 (≥) | 992 (≥) | 22 | 32 | 24 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 442 |
| 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 |
|---|---|---|---|---|---|---|---|
| 454 (≥) | 728 (≥) | 31 | 21 | 11 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 333 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 558 | 667 | 149 |
We can customize the production of A 688 S32654 grade, contact us for the best solution.
–sales@specificsteel.com