MERIH STAINLESS, based in Istanbul, Turkey, stands out as a leading manufacturer and supplier of top-quality stainless steel fasteners, including the highly regarded Stainless Steel 347H Bolts. With a strong focus on engineering excellence and a commitment to international standards, MERIH STAINLESS provides products that industries around the globe can rely on. Their 347H Bolts are specifically crafted for high-temperature and corrosive settings, ensuring exceptional durability and performance. By blending cutting-edge manufacturing techniques with thorough quality control, MERIH STAINLESS guarantees that each bolt meets the mechanical and chemical demands of even the toughest applications. The company has built a solid reputation for reliability, prompt delivery, and customer-centric solutions across diverse global markets.
Stainless Steel 347H Bolts are made with a blend of chromium (17–20%), nickel (9–13%), and a carefully controlled carbon content (maximum 0.10%), along with columbium (niobium) for stabilization. This unique composition significantly boosts resistance to intergranular corrosion and high-temperature creep. These bolts boast a minimum tensile strength of 515 MPa and a minimum yield strength of 205 MPa, with an elongation of about 40%. Typically, their Brinell hardness reaches up to 217. Their mechanical stability at elevated temperatures makes them perfect for high-stress and high-heat environments, maintaining structural integrity without compromise.
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 demand robust, heat-resistant fastening solutions. You’ll commonly see them in petrochemical plants, power generation facilities, refineries, and thermal processing units. These bolts are particularly well-suited for applications in boilers, pressure vessels, heat exchangers, and exhaust systems, where they can withstand prolonged exposure to high temperatures. Their remarkable ability to resist corrosion and maintain strength under extreme conditions makes them a go-to choice for many industrial applications.
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