Stainless Steel 347 and 347H Fasteners are made from an austenitic stainless steel alloy containing chromium, nickel, and columbium (niobium). Known as ‘stabilized’ stainless steel, this alloy undergoes heat treatment or stabilization to improve resistance to intergranular corrosion. SS 347 Fasteners are reliable and durable components frequently used in industrial applications. For even greater performance, 347H Stainless Steel Fasteners provide enhanced corrosion resistance, high strength, and come in various shapes and sizes for diverse uses. These fasteners are ideal for high-temperature environments like power plants or oil refineries, where other stainless steel grades may fail due to intergranular attack.
Stainless Steel 347H Fasteners offer numerous benefits, especially their exceptional corrosion resistance thanks to their stabilized composition. This makes them perfect for use in corrosive environments, such as areas near water or saltwater pools. They also deliver excellent tensile strength, making them essential for heavy-duty industrial applications requiring strong, reliable connections. Their impressive temperature resistance adds to their versatility, ensuring dependable performance in both extreme heat and cold. Additionally, the product range includes other options like Nickel 201 Nuts, Nickel 200 Washers, and more, providing comprehensive solutions for various industrial needs.Specifications of SS 347
| Material | Stainless Steel 347 |
| Specification | IS/BS/ASTM |
| Standards | ASTM / ASME – A/ SA 193 |
| Size | 3 mm to 200 mm |
| Length | M02 to M30 |
Each SS 347 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 347 Bolt. There are many other sizes available as well, and some applications may require custom sizes or special configurations.
| SS 347 Fasteners | Element (% By Mass) |
|---|---|
| Chromium (Cr) | 17–20 |
| Nickel (Ni) | 9–13 |
| Iron (Fe) | 62.74 min |
| Manganese (Mn) | 2% max |
| Silicon (Si) | 1.0% max |
| Carbon (C) | 0.08% max |
| Phosphorus (P) | 0.045% max |
| Sulfur (S) | 0.03% max |
| Ti | 5(C+N) – 0.70 max |
| Cb | 10×C – 1.10 |
| Density | 8.0 g/cm3 |
| Melting Point | 1454 °C (2650 °F) |
| Tensile Strength | Psi – 75000 , MPa – 515 |
| Yield Strength (0.2%Offset) | Psi – 30000 , MPa – 205 |
| Elongation | 35 % |
We specialize in manufacturing high-quality fasteners that cater to diverse industries, including oil & gas, petrochemical, marine, power generation, aerospace, and construction.
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