Intended for use in ornamental, structural, exhaust, and other applications where appearance, mechanical properties, or corrosion resistance is needed
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | - | 0.08 | ||
| Si | - | 1.00 | ||
| Mn | - | 2.00 | ||
| P | - | 0.04 | ||
| S | - | 0.03 | ||
| Cr | 22.0 | 24.0 | ||
| Ni | 12.0 | 16.0 | ||
| Nb+Ta | - | 1.0000 |
Intended for use in ornamental, structural, exhaust, and other applications where appearance, mechanical properties, or corrosion resistance is needed.
Austenitic steel; As-welded or cold-reduced mechanical tubing in sizes to 406.4 mm outside dimension, and in wall thicknesses 0.51 mm and over.
| 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) |
|---|---|---|---|---|---|---|
| 591 (≥) | 341 (≥) | 44 | 43 | 44 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 314 |
| 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 |
|---|---|---|---|---|---|---|---|
| 455 (≥) | 841 (≥) | 24 | 43 | 14 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 412 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 251 | 145 | 161 |
We can customize the production of A 554 MT 309S -Cb grade, contact us for the best solution.
–sales@specificsteel.com