One of the leading producers and suppliers of high-performance stainless steel 309 fasteners is Harsh Metalloys, which has its headquarters in Mumbai, India. Our SS 309 Fasteners, which are renowned for their remarkable structural integrity and heat resistance, are made for demanding industrial applications in corrosive and high-temperature settings. These fasteners are expertly crafted from premium raw materials and satisfy strict international requirements for dependability and durability. Harsh Metalloys has a strong customer-centric approach and serves a variety of industries, such as thermal processing, power generation, and petrochemicals, by providing reliable and affordable fastening solutions with timely delivery and reliable quality control.
The main constituents of stainless steel 309 fasteners, which have outstanding resistance to oxidation and corrosion, are 22–24% chromium and 12–15% nickel. These fasteners have a maximum carbon content of 0.20% and can withstand temperatures of up to 1000°C without losing their mechanical strength. They have an elongation of 40%, a yield strength of 205 MPa, and a tensile strength of roughly 550 MPa. SS 309 Fasteners are perfect for high-temperature settings that demand both mechanical dependability and corrosion resistance because of the alloy’s stable austenitic structure, which guarantees resistance to thermal fatigue and scaling under extended heat exposure.
| Grade | Stainless Steel 309 Fasteners. |
| Standard | ASTM A193 / A194, ASME SA193 / SA194, IS, BS, ANSI |
| Size | M02 to M33 |
| Length | UPTO 5 METERS |
| Surface Coating | Hot Dipped Galvanizing 309 Stainless Steel Fasteners, Phosphate 309 Stainless Steel Fasteners, Teflon 309 Stainless Steel Fasteners, Ptfe Coated 309 Stainless Steel Fasteners, Xylon 309 Stainless Steel Fasteners, Zinc 309 Stainless Steel Fasteners, Cadmium 309 Stainless Steel Fasteners |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
| Min. % | – | – | – | – | – | 18.0 | – | 8.0 | – |
| Max % | 0.08 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | – | 10.5 | 0.10 |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Rockwell B (HR B) max | Brinell (HB) max |
| 309 | 515 | 205 | 40 | 92 | 201 |
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Stainless Steel 309 Nuts are designed for high-temperature applications with excellent resistance to oxidation and scaling. Available in sizes from M6 to M30, they securely fasten components in harsh environments.
Stainless Steel 309 Stud Bolts come in sizes from M8 to M36 and have exceptional high-temperature resistance. They are ideal for heavy-duty industrial applications requiring robust mechanical strength and durability.
Stainless Steel 309 Bolts are suitable for high-temperature and aggressive environments. Sizes typically range from M6 to M30, providing reliable performance and strength in demanding applications.
Stainless Steel 309 threaded rods offer excellent durability and heat resistance. They come in lengths up to 3 meters and diameters from M6 to M30, making them ideal for high-temperature and corrosive applications.
Stainless Steel 309 screws are designed for high-temperature environments with strong oxidation resistance. Available in sizes from M4 to M24, they ensure secure fastening and longevity in extreme conditions.
Stainless Steel 309 washers provide reliable load distribution and reduced friction. They are available in sizes matching standard bolts and screws, typically ranging from M4 to M30, ensuring durability and a proper fit.
In industries where exposure to high temperatures and corrosive materials is frequent, stainless steel 309 fasteners are widely used. Common uses include heat exchangers, combustion chambers, kilns, furnaces, and exhaust ducts. These fasteners are perfect for securing parts in refineries, power plants, petrochemical facilities, and thermal processing units. They are appropriate for both structural and mechanical fastening applications due to their exceptional performance in oxidising atmospheres and thermal cycling conditions. Because of their high structural integrity, deformation resistance, and long-lasting performance, SS 309 fasteners are also used in incinerators, flue gas systems, and other high-stress settings.
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