Based in Delhi, India, Harshita Stainless is a well-known producer and supplier of stainless steel 309S fasteners, providing high-end fastening solutions for corrosive and hot industrial settings. Harshita Stainless is renowned for its customer-focused service, strong quality control, and precision engineering, which results in products that satisfy global performance and durability standards. Because of their superior mechanical strength and resistance to oxidation, 309S fasteners are particularly well-suited for applications involving high temperatures. Harshita Stainless is a reputable brand for stainless steel fasteners that guarantee strong, long-lasting connections and are trusted in a variety of industries, including petrochemicals, power generation, and furnace manufacturing.
The austenitic stainless steel alloy used to make Stainless Steel 309S Fasteners has a low carbon content (≤0.08%) and roughly 22–24% chromium and 12–15% nickel. By reducing carbide precipitation during welding, the reduced carbon increases resistance to intergranular corrosion. These fasteners have a good elongation of about 40%, a high tensile strength of about 550 MPa, and a yield strength of 205 MPa. SS 309S exhibits excellent oxidation resistance at temperatures up to 1038°C (1900°F) and maintains structural integrity in cyclic heating environments, making it suitable for various thermal and corrosive applications.
Stainless Steel 309s Fasteners Specifications | |
| Grade | Stainless Steel 309S Fasteners. |
| Standard | ASTM A193 / A194, ASME SA193 / SA194, IS, BS, ANSI |
| Size | M02 to M33 |
| Length | UPTO 5 METERS |
| Surface Coating | Hot Dipped Galvanizing 309s Stainless Steel Fasteners, Phosphate 309s Stainless Steel Fasteners, Teflon 309 Stainless Steel Fasteners, Ptfe Coated 309s Stainless Steel Fasteners, Xylon 309 Stainless Steel Fasteners, Zinc 309s Stainless Steel Fasteners, Cadmium 309 Stainless Steel Fasteners |
Element | Content (%) |
Iron, Fe | 60 |
Chromium, Cr | 23 |
Nickel, Ni | 14 |
Manganese, Mn | 2 |
Silicon, Si | 1 |
Carbon, C | 0.20 |
Phosphorous, P | 0.045 |
Sulfur, S | 0.030 |
|
Properties |
Metric |
Imperial |
|
Tensile strength |
620 MPa |
89900 psi |
|
Yield strength (@ strain 0.200%) |
310 MPa |
45000 psi |
|
Izod impact |
120 – 165 J |
88.5 – 122 ft-lb |
|
Shear modulus (typical for steel) |
77 GPa |
11200 ksi |
|
Elastic modulus |
200 GPa |
29008 ksi |
|
Poisson’s ratio |
0.27-0.30 |
0.27-0.30 |
|
Elongation at break (in 50 mm) |
45% |
45% |
|
Hardness, Brinell |
147 |
147 |
|
Hardness, Rockwell B |
85 |
85 |
|
Hardness, Vickers (converted from Rockwell B hardness) |
169 |
169 |
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Stainless Steel 309s Bolts are available in sizes ranging from M6 to M64 and lengths from 10mm to 200mm. They offer high corrosion resistance, making them suitable for high-temperature environments and demanding applications.
SS 309S Nuts come in sizes M6 to M64, providing excellent corrosion resistance and high strength. They are ideal for chemical processing and high-temperature applications, ensuring secure and reliable fastening.
SS Stud bolts in 309S range from M6 to M64 in diameter and are available in lengths up to 200mm. They offer superior corrosion resistance and are commonly used in high-temperature and high-stress environments, such as petrochemical plants.
These screws are available in sizes from M1.6 to M12, with lengths up to 100mm. They provide excellent corrosion resistance and are suitable for various applications, including construction, automotive, and industrial machinery.
Threaded rods in 309S come in sizes from M6 to M64 and lengths up to 3000mm. Known for their corrosion resistance and high strength, they are used in construction, marine, and high-temperature applications.
SS 309S washers are available in sizes ranging from M6 to M64. They provide excellent corrosion resistance and are used to distribute the load of a fastener, ensuring secure and stable assemblies in various applications, including high-temperature environments.
We manufacture these stainless steel fasteners using the best quality materials like SS 309S Fasteners. Most of our vast client base relies on these very fasteners, which are internationally trusted for their quality and reliability. These fasteners vary according to size and dimensions, custom-made, if so desired, to meet the specific needs of each customer. Our aim is to provide them with products they can trust in line with their exacting requirements.
In settings like boilers, kilns, furnaces, and heat treatment apparatus that demand superior heat resistance, stainless steel 309S fasteners are frequently utilised. They are appropriate for welded assemblies due to their low carbon content, which also lowers the possibility of corrosion following welding. These fasteners are perfect for applications where exposure to harsh chemicals and high temperatures is frequent, such as power plants, refineries, thermal processing units, petrochemical plants, and exhaust systems. Because of their dependability and durability, they are also used in structural connections in high-temperature settings. For engineers looking for long-term performance under chemical and thermal stress, SS 309S fasteners are the recommended option.
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