Fasteners are indispensable components across various products, spanning automobiles, appliances, medical devices, and electronics. Among the multitude of materials available for fasteners, Stainless Steel 309 Fasteners stand out as a popular choice. Renowned for their exceptional corrosion resistance, SS 309 Fasteners offer superior performance compared to other metals and alloys. Composed primarily of iron alloyed with chromium (22-24%), nickel (12-15%), and manganese (2%), Stainless Steel 309 Fasteners, also referred to as SS309, boast remarkable physical properties, including strength and durability. Additionally, variants such as 309L Stainless Steel Fasteners, featuring low carbon content for enhanced corrosion resistance, are preferred for applications requiring welding. Conversely, SS 309H Fasteners represent a high-carbon version tailored for applications demanding elevated-temperature strength.
UNS S30900 Fasteners, renowned for their commendable corrosion resistance, particularly excel in saltwater environments, making them a preferred choice for marine applications where consistent maintenance may not be feasible. Their versatility extends to various industries, including automotive manufacturing, construction projects, plumbing fixtures, kitchen appliances, and electronic devices. SS UNS S30909 Fasteners are favored for outdoor projects such as railings or fencing, thanks to their exceptional corrosion resistance against harsh weather conditions. Moreover, UNS S30900 Fasteners find application in food processing equipment owing to their non-reactive nature. A wide range of SS Fasteners are available, encompassing options like Stainless Steel 347 Fasteners, Stainless Steel 316H Fasteners, and more, catering to diverse industrial needs.
Standard SS 309 Fasteners specifications as per Fasteners manufacturers.
| Material | SS 309 |
| Specification | IS/BS/ASTM |
| Standards | ASTM / ASME - A/ SA 193 / 193 |
| Size | 3 mm to 200 mm |
| Length | M02 to M30 |
Each SS 309 Fasteners have unique design each of them are used in specific applications. Some of them are mentioned below.
Note that this chart includes only some of the most common sizes of SS 309 Bolt. There are many other sizes available as well, and some applications may require custom sizes or special configurations.
Chromium (Cr)
22-24%
Nickel (Ni)
12-15%
Iron (Fe)
Balance
Manganese (Mn)
2%
Silicon (Si)
1%
Carbon (C)
0.2% max
Phosphorus (P)
0.045% max
Sulfur (S)
0.03% max
| Density | 8.8 g/cm3 |
| Melting Point | 1350 °C (2460 °F) |
| Tensile Strength | 75 ksi (515 MPa) minimum |
| Yield Strength (0.2%Offset) | 30 ksi (205 MPa) minimum |
| Elongation | 40% minimum |
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