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Heat-Resistant Stainless
Steel Plates
Heat-resistant stainless steel is a stainless steel material designed to maintain strength and resist oxidation in high-temperature environments. It is used in equipment exposed to high-temperature gases or heat for extended periods and offers excellent oxidation resistance and thermal fatigue resistance. It is suitable for components used under high-temperature conditions, such as heat treatment furnaces, incineration facilities, boiler components, exhaust gas systems, and kiln-related equipment.

Types of Steel Handled
- SUS309S
- SUS310S
- AH-4
Features
- Maintains excellent oxidation resistance even in high-temperature environments
- Resistant to thermal fatigue caused by repeated expansion and contraction
- High durability during prolonged use
- Helps suppress scaling (oxide scale flaking)
Chemical Properties (Typical Values)
| Materials | Specifications | C | Si | Mn | Cr | Ni |
|---|---|---|---|---|---|---|
| SUS309S | JIS | ~0.08 | ~1 | ~2 | 22~24 | 12~15 |
| SUS310S | JIS | ~0.08 | ~1.5 | ~2 | 24~26 | 19~22 |
| AH-4 | – | 0.06 | 0.3 | 0.8 | 23 | 11.7 |
The photos shown are for illustrative purposes only.