Premium-grade stainless steel 347 bolts, perfect for demanding industrial applications, are the speciality of Vinit Stainless, a reputable manufacturer and supplier with headquarters in Chennai, India. Niobium-stabilized austenitic stainless steel, SS 347, exhibits exceptional resistance to intergranular corrosion, particularly in high-temperature settings. At Vinit Stainless, we make sure that our 347 bolts are made with precision engineering and satisfy global requirements for durability, strength, and resistance to corrosion. These bolts are appropriate for use in power generation systems, heat exchangers, pressure vessels, and chemical processing equipment where stability under heat is crucial because they come in a variety of sizes, threads, and finishes.
347 Stainless Steel In order to avoid carbide precipitation and intergranular corrosion, bolts are stabilised with niobium (columbium) and consist of 17–19% chromium and 9–13% nickel. Even at high temperatures, this austenitic alloy maintains its high mechanical strength. A yield strength of about 205 MPa and a tensile strength of 515–750 MPa are typical mechanical characteristics. Even in cryogenic settings, SS 347 bolts provide exceptional toughness and good resistance to creep and stress rupture. In situations where the material is heavily welded or thermally cycled, the niobium stabilisation improves weldability and preserves corrosion resistance.
|
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 | – |
Contact us to get a quick quote for your requirement.
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.
347 Stainless Steel For situations requiring resistance to intergranular corrosion in high-temperature and high-stress settings, bolts are perfect. Boilers, pressure vessels, exhaust manifolds, heat exchangers, and equipment used in chemical processes are examples of common applications. They are widely employed in sectors like marine engineering, power generation, aerospace, and petroleum refining. They are appropriate for superheater and reheater tubes as well as other heat-intensive assemblies due to their resistance to temperatures as high as 870°C. Furthermore, in welded structures, SS 347 bolts provide exceptional structural integrity and longevity in oxidising and corrosive environments, particularly in areas with frequent thermal cycling.
©2024 Vinit Stainless All Rights Reserved.
