Aditya Stainless has earned a solid reputation as a reliable manufacturer and supplier of Stainless Steel 347 Bolts in Kolkata, India. They provide top-notch fastening solutions designed for high-temperature and corrosive industrial settings. Stainless Steel 347 (UNS S34700) is a niobium-stabilized austenitic stainless steel known for its excellent resistance to intergranular corrosion, particularly after welding and extended exposure to high heat. These bolts find their place in various industries, including chemical processing, aerospace, petroleum refining, marine, and power generation. Built for structural strength and longevity, SS 347 bolts retain impressive mechanical properties even under thermal cycling, making them perfect for pressure vessels, exhaust systems, and boiler components.
Stainless Steel 347 Bolts generally consist of 17–20% chromium and 9–13% nickel, with niobium (columbium) added to prevent carbide precipitation and improve stability at high temperatures. These bolts boast a tensile strength of at least 515 MPa, a yield strength of at least 205 MPa, and an elongation of about 35–40%. Their resistance to oxidation and creep strength make them suitable for continuous use at temperatures up to 900°C (1650°F). SS 347 bolts are known for their good weldability, formability, and mechanical reliability, especially in high-temperature, welded, or cyclic loading situations, outperforming standard 304 or 316 in terms of thermal stability and long-term strength.
|
Material |
Specification |
Standards |
Size |
Length |
|
Stainless Steel 347 Bolts |
ASTM, ASME and API |
ASTM B 193 / ASME SB 193 |
M02 to M30 |
3 mm To 200 mm |
| Element | SS 347 |
| 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 347 |
| 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 347 bolts are high-temperature resistant fasteners with excellent corrosion resistance, especially against acids. They offer durability and strength in extreme environments, ideal for aerospace and industrial applications.
Custom Stainless Steel 347 Hex Bolt is a custom-made fastener with a square head, which provides excellent high-temperature corrosion resistance and is ideal for specialty applications requiring durability and durability in the case of in the strong.
Stainless Steel 347 leg bolt is a high-temperature resistant fastener with a threaded shaft and flat, leg-like design. It provides strong, reliable connections in harsh industrial and high-heat environments.
Stainless Steel 347 Expansion Anchor Bolt is designed to securely anchor objects into concrete or masonry. It offers high-temperature resistance and excellent corrosion protection, expanding upon installation for a strong hold.
Stainless Steel 347 hex flange head bolt features a hexagonal head with an integrated flange, ensuring secure fastening and load distribution. It provides high-temperature resistance and excellent corrosion protection.
Stainless Steel 347 full threaded bolts have a completely threaded shaft, offering consistent grip and engagement. They are designed for high-temperature applications, providing excellent strength and corrosion resistance in extreme environments.
We ensure the top quality of SS 347 Bolts by following a strict in-house testing and quality control process. We carry out an exhaustive range of tests such as tensile tests, hardness tests, and corrosion resistance tests, etc. Our promise of excellence also includes prompt delivery so that our customers get dependable products at the time of delivery, every time.
Stainless Steel 347 Bolts are frequently utilized in aerospace components, chemical tanks, petroleum refineries, power plants, furnace parts, and exhaust manifolds, where resistance to high-temperature oxidation and corrosion is essential. They are particularly beneficial in welded structures where intergranular corrosion after welding poses a risk. These bolts are perfect for boiler tubes, pressure vessels, reactor linings, and superheater tubes in harsh environments. Their stabilized structure guarantees long-lasting performance through thermal cycles.
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