Chanchai Stainless supplies Stainless Steel 347H Bolts in Bangkok, Thailand. These bolts are designed for high-temperature strength and resistance to intergranular corrosion. As a high-carbon version of 347, they offer better creep resistance and durability in high-temperature environments. Stabilized with niobium, they prevent carbide precipitation during welding and long-term heat exposure, ensuring secure fastening. Stainless Steel 347H Bolts are popular in chemical, refinery, and power generation industries where oxidation stability and mechanical reliability are crucial. Chanchai Stainless makes sure these bolts meet strict international standards for quality, strength, and long-lasting performance. Chanchai Stainless is a leading name from Bangkok, Thailand supplier for high-quality stainless steel products to various industries. and it specializes in offering different grades of material and high-end solutions which comprise SS 347H Bolts. This specific material is well-known for working in extreme temperatures, having outstanding oxidation and corrosion resistance. Brightly finished, the precision remake of Stainless Steel 347H Bolts has a long-lasting performance and reliability even in rigorous applications.
Stainless Steel 347H bolts contain chromium (17–19%), nickel (9–13%), niobium/tantalum stabilizers, and higher carbon (0.04–0.10%). The increased carbon enhances creep strength, while niobium prevents carbide precipitation. They have a tensile strength averaging 515 MPa, a yield strength of 205 MPa, and an elongation of about 40%. These bolts provide excellent oxidation resistance up to 870°C and good stability in continuous high-heat applications. Stainless Steel 347H offers reliable strength, weldability, and resistance to intergranular corrosion for long-term fastening in demanding heat conditions.
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 commonly used in boilers, heat exchangers, and superheaters that experience high temperatures. Chemical processing and refinery plants depend on them for securing piping systems, reactors, and heat treatment equipment. In the aerospace and automotive industries, they are used in exhaust systems and thermal components that require high creep resistance. Power generation industries utilize them in turbines and boiler fastenings. Their durability and thermal stability make these bolts suitable for environments needing resistance to oxidation and intergranular corrosion.
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