Premium-grade stainless steel 347 fasteners are available from Vinit Stainless, a top manufacturer and supplier in Chennai, India, for uses requiring exceptional strength, resistance to corrosion, and thermal stability. These fasteners, which are made of niobium-stabilized austenitic stainless steel, are perfect for high-temperature settings and offer remarkable resistance to intergranular corrosion, even after welding. Vinit Stainless guarantees that every fastener satisfies international standards and is precisely engineered using cutting-edge manufacturing technologies. Our SS 347 fasteners are widely used in industries like petrochemicals, aerospace, power generation, and chemical processing for safe and durable performance. They come in a variety of sizes, types, and specifications.
In order to prevent carbide precipitation during welding and high-temperature service, stainless steel 347 fasteners are stabilised with columbium (niobium) and consist of 17–19% chromium and 9–13% nickel. Strong resistance to oxidation and intergranular corrosion is offered by this composition. These fasteners usually have a yield strength of about 205 MPa and a tensile strength of 515–750 MPa. Up to 870°C, SS 347 retains exceptional mechanical strength, ductility, and creep resistance. These fasteners have good formability and weldability, making them appropriate for demanding settings with prolonged mechanical and thermal stress.
|
Material |
Specification |
Standards |
Size
|
Length |
|
Stainless Steel 347 Fasteners
|
IS
BS
ASTM
|
ASTM / ASME – A/ SA 193 |
3 mm
to
200 mm
|
M02 to M33
|
| Grade | Mn | N | P | C | S | Cr | Mo | Si | Ni | Other | |
| 347 | min. max | 2.00 | – | 0.045 | – 0.08 | 0.030 | 17.0 19.0 | – | 0.75 | 9.0 13.0 | Nb=10(C+N) 1.0 |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 347 | 515 | 205 | 40 | 92 | 201 |
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Highly corrosion-resistant, Stainless Steel 347 Nuts are designed to withstand high temperatures and corrosive environments. They are available in various sizes, typically from M4 to M36, and standard dimensions such as 6mm to 30mm in thickness.
Offering excellent resistance to oxidation and corrosion, Stainless Steel 347 Stud Bolts come in sizes ranging from M6 to M36, with lengths varying from 25mm to 300mm. They are ideal for high-temperature and chemical-resistant applications.
Corrosion-resistant and durable, Stainless Steel 347 Bolts are used in extreme environments. They are available in sizes from M6 to M36 and standard lengths from 16mm to 100mm, suitable for high-stress applications and high-temperature conditions.
Known for their high corrosion resistance and stability under heat, Stainless Steel 347 threaded rods are available in diameters from M6 to M36 and lengths ranging from 100mm to 3000mm. They are used in heavy-duty and high-temperature settings.
Featuring excellent resistance to oxidation and corrosion, Stainless Steel 347 screws come in sizes from M3 to M20, with lengths from 10mm to 150mm. They are suited for high-temperature and corrosive environments.
With superior corrosion and high-temperature resistance, Stainless Steel 347 washers are available in diameters ranging from M4 to M36. Thickness varies from 0.5mm to 5mm, making them suitable for various applications where durability is critical.
347 Stainless Steel Numerous industries that frequently encounter high temperatures and corrosive conditions use fasteners. These include boilers, heat exchangers, oil and gas, chemical processing, power generation, and aerospace applications. When intergranular corrosion resistance without post-weld heat treatment is needed in welded structures, SS 347 fasteners are especially useful. They are also utilised in pressure vessels, exhaust systems, and superheater parts. They are perfect for fastening parts subjected to cyclic or continuous thermal loads because of their corrosion resistance and thermal stability, which guarantees long-term durability, safety, and dependability in demanding settings.
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