Mitchell Stainless is a reliable manufacturer and supplier of high-performance Stainless Steel 347H Bolts based in Hamilton, New Zealand. They provide top-notch fastening solutions tailored for tough industrial settings. With a strong focus on quality, precision engineering, and customer satisfaction, the company ensures that their bolts meet strict international standards for durability and performance. Renowned for their exceptional heat resistance and corrosion-proof features, Mitchell Stainless’ 347H bolts are built to endure extreme temperatures and challenging conditions. Thanks to advanced manufacturing techniques, rigorous quality checks, and a customer-centric approach, they continue to serve various industries in Hamilton with dependable, long-lasting, and cost-effective stainless-steel fastening products.
Stainless Steel 347H Bolts are crafted from a high-carbon, niobium-stabilized austenitic stainless steel alloy, specifically designed for outstanding high-temperature strength. The typical composition includes chromium, nickel, carbon, and stabilizing elements like niobium, which enhance creep resistance and structural stability. These bolts boast impressive mechanical properties, such as high tensile strength, excellent oxidation resistance, and remarkable resistance to intergranular corrosion. Their robust microstructure guarantees reliable performance in high-temperature environments, making them perfect for applications that involve thermal cycling, pressure, and prolonged exposure to heat without sacrificing mechanical integrity.
Material | Specification | Standards | Size | Length |
Stainless Steel 347H Bolts | ASTM, ASME and API | ASTM B 193 / ASME SB 193 | M02 to M30 | 3 mm To 200 mm |
| Element | SS 347H |
| 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 |
| Element | SS 347H |
| 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 | – |
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Stainless Steel 347H Bolts are high strength, heat resistant fasteners designed for extreme temperatures and hot environments. They provide excellent oxidation properties and durability, ideal for aerospace and industrial applications.
Custom Stainless Steel 347H Hex Bolt is a high heat resistance fastener with a hexagonal head, tailored to specific dimensions. Provides exceptional durability and resistance to extreme heat applications.
Stainless Steel 347H Leg Bolt is a durable high heat resistant fastener with a long threaded shaft and flat head, engineered for durability and stability in extremely hot conditions in
Stainless Steel 347H Expansion Anchor Bolt is a heat-resistant fastener for concrete or masonry. It expands in the hole as it tightens, providing a firm grip.
Stainless Steel 347H Hex Flange Head Bolt features a hexagonal head with an integrated flange for improved weight distribution. Provides superior thermal resistance and durability to extreme temperatures and environmental corrosion.
Stainless steel 347H fully threaded bolts have threads running the full length, for permanent clamping ability and superior heat resistance. They are ideal for demanding applications that require durability and heat resistance.
we prioritize quality and reliability by conducting rigorous in-house testing on all our products to ensure they meet the highest standards. Our comprehensive testing procedures include material and performance evaluations, ensuring optimal durability and performance. Additionally we offer third-party inspection services to provide further assurance to our customers. With a commitment to prompt delivery. We ensure that all orders are processed efficiently and shipped on time, meeting the needs of our clients without compromise.
Stainless Steel 347H Bolts find extensive use in industries that require exceptional heat resistance and corrosion protection. Their enhanced stability at elevated temperatures makes them perfect for petrochemical plants, refineries, power generation facilities, and heat exchangers. You’ll often see them in boilers, pressure vessels, exhaust systems, furnace equipment, and high-temperature pipelines. Additionally, these bolts are essential in various applications where reliability and durability are crucial, ensuring that they can handle the demands of challenging environments while maintaining their integrity over time.
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