SS310S Tube Sheet
The low-carbon counterpart to 310 — same extreme oxidation resistance, chosen specifically when the tube-to-sheet joint will be welded and sensitization needs to be ruled out.
Chemical Composition
| Element | Min % | Max % |
|---|---|---|
| Chromium (Cr) | 24.0 | 26.0 |
| Nickel (Ni) | 19.0 | 22.0 |
| Silicon (Si) | — | 1.50 |
| Carbon (C) | — | 0.08 |
Mechanical Properties
| Property | Typical Value |
|---|---|
| Tensile Strength | 515 MPa min |
| Yield Strength (0.2% offset) | 205 MPa min |
| Elongation | 40% min |
| Continuous Oxidation Resistance | ~1035-1150°C |
Equivalent Grades
| Standard | Designation |
|---|---|
| ASTM / UNS | S31008 |
| EN / DIN | 1.4845 |
| JIS | SUS310S |
310S vs. 310 — Which One
See the full SS310 datasheet for the non-welded counterpart.
Applications
Welded furnace and high-temperature process gas equipment where extreme oxidation resistance is needed alongside weld integrity — the same duty as SS310, but where the joint design calls for welding rather than expansion.
Advantages & Limitations
Advantages
- Same extreme oxidation resistance as 310
- No sensitization risk at weld joints
- Preferred default for welded high-temperature assemblies
Limitations
- Allowable stress at high temperature still governs design, not oxidation limit alone
- No chloride advantage — still no molybdenum
- Higher cost than standard 304/316 family
FAQ
Essentially no meaningful loss for tube sheet applications — 310S's lower carbon content has minimal impact on oxidation resistance or mechanical properties while removing weld sensitization risk entirely.
310S has reasonable resistance to sulfidation compared to lower-alloy stainless, though very aggressive sulfur-bearing environments may still call for a nickel alloy assessment — confirm against your specific process gas composition.
310S is typically sourced to order given its specialist high-temperature demand — send your specification and quantity for a confirmed lead time.