Based in Chennai, India, Vinit Stainless is a reputable provider of premium stainless steel products to a variety of industries. We are pleased to provide Stainless Steel 347H Bolts, which are renowned for their exceptional performance in extremely hot and cold conditions. We specialize in a variety of grades and high-performance solutions. These bolts have a glossy finish and are carefully designed to withstand corrosion, oxidation, and long-term use. Vinit Stainless’s SS 347H Bolts are made to endure the harshest conditions and are perfect for uses where operational success depends on dependability, thermal stability, and resistance to harsh chemicals.
The stabilized austenitic stainless steel alloy used to make Stainless Steel 347H Bolts contains roughly 17–20% Chromium, 9–13% Nickel, and columbium (niobium) to improve resistance to carbide precipitation during welding. With a tensile strength of up to 515 MPa and a yield strength of about 205 MPa, 347H’s higher carbon content enhances creep strength and high-temperature stability. These bolts are ideal for welded structures and demanding high-temperature environments because they retain their mechanical integrity under extended thermal exposure and are resistant to phosphoric, nitric, and sulfuric acids.
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 are extensively utilized in corrosive and high-temperature settings in a variety of industries, including petrochemical, power generation, aerospace, and chemical processing. They are perfect for use in boiler systems, reactors, exhaust manifolds, and furnaces due to their exceptional resistance to oxidation, acidic corrosion, and heat stress. They offer dependable fastening solutions where other materials might fail, and they work particularly well in systems exposed to nitric and sulfuric acids. They are crucial for critical applications needing long-term performance under erratic and extreme temperatures because of their high mechanical stability and resistance to thermal expansion.
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