At Mitchell Stainless in Hamilton, New Zealand, we supply stainless steel fasteners designed for the toughest operating conditions. Our Stainless Steel 310H Bolts are built for high-temperature service where strength and stability must be maintained over long periods. With a higher carbon content than standard 310 grades, these bolts deliver improved high-temperature strength for demanding industrial applications. Supported by Mitchell Stainless’ commitment to quality and local expertise, 310H bolts are a reliable choice for customers who need confidence in extreme heat environments.
Stainless Steel 310H Bolts are manufactured from an austenitic stainless steel alloy with high chromium and nickel content, combined with an increased carbon level. This composition enhances high-temperature strength and creep resistance while maintaining excellent oxidation and scaling resistance. The material retains good toughness and structural integrity under prolonged heat exposure. Compared to lower carbon variants, 310H offers superior mechanical stability in continuous high-temperature applications.
Material | Specification | Standards | Size | Length |
Stainless Steel 310H Bolts | ASTM, ASME and API | ASTM B 193 / ASME SB 193 | M02 to M30 | 3 mm To 200 mm |
| Element | SS 310H |
| Ni | 0.75 |
| C | 0.15 |
| Mn | 1.00 max |
| P | 0.04 max |
| S | 0.03 max |
| Si | 1.00 max |
| Cr | 11.5 – 13.5 |
| Mo | – |
| N | – |
| Element | SS 310H |
| Tensile Strength (MPa) min | 480 |
| Yield Strength 0.2% Proof (MPa) min | 275 |
| Elongation (% in 50mm) min | 16 |
| Rockwell B (HR B) max Hardness | 95 |
| Brinell (HB) max Hardness | 201 |
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Stainless Steel 310H bolts are high-performance Fasteners designed for extreme heat environments, offering superior oxidation and corrosion resistance. Ideal for high-temperature applications in industries like petrochemical and aerospace.
Custom Stainless Steel 310H Hex Bolt is a custom-made fastener with a square head, providing excellent thermal resistance for high-temperature industrial and aerospace applications
Stainless Steel 310H leg bolt features a unique leg design for high-temperature applications. It offers excellent heat and corrosion resistance, making it suitable for securing components in extreme industrial environments.
Stainless Steel 310H expansion anchor bolt is a high-temperature resistant fastener designed for anchoring in concrete or masonry. It expands upon installation, ensuring secure and reliable holding in harsh environments
Stainless Steel 310H Hex Flange Head Bolt features a hexagonal head with an integrated flange, providing high heat resistance and excellent corrosion resistance, ideal for secure clamping in demanding industrial applications
Stainless Steel 310H full threaded bolts are high-temperature resistant fasteners with threads running the entire length. They offer superior corrosion and oxidation resistance, ideal for extreme industrial and aerospace applications.
In addition, the bundled MTC, which conforms to the EN 10204/3.1b specification, is offered to our stainless-steel 310H bolts, along with PMI test certificate, radiography test report of 100%, and a third-party inspection certificate. Thus, high quality and reliability are guaranteed in our products, which should give you confidence and satisfaction in buying our products.
Stainless Steel 310H Bolts are commonly used in extreme high-temperature and pressure environments. Typical applications include furnaces, kilns, radiant tubes, heat exchangers, petrochemical processing plants, and power generation facilities. They are also suitable for thermal processing systems and industrial burners where long-term heat exposure is unavoidable. At Mitchell Stainless, we supply 310H bolts for specialised engineering projects that demand maximum heat resistance and dependable performance. Their strength and stability make them a trusted fastening solution in severe industrial conditions.







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