Stainless Steel 347 and 347H Fasteners are crafted from an austenitic stainless steel alloy comprising chromium, nickel, and columbium (niobium). This alloy is often termed 'stabilized' stainless steel due to heat treatment or stabilization, enhancing its resistance to intergranular corrosion. SS 347 Fasteners stand out as durable and dependable components widely utilized in industrial settings. Taking reliability a step further, 347H Stainless Steel Fasteners offer superior corrosion resistance, high strength, and a diverse array of shapes and sizes for varied applications. Hence, Stainless Steel 347H Fasteners find ideal use in high-temperature environments such as power plants or oil refineries, where susceptibility to intergranular attack renders other stainless steel grades unsuitable.
Stainless Steel 347H Fasteners present a multitude of advantages, primarily their superior corrosion resistance stemming from their stabilized composition. This feature renders them exceptionally well-suited for environments prone to corrosion, including areas near bodies of water or saltwater pools. Furthermore, these fasteners boast remarkable tensile strength, making them indispensable in heavy-duty industrial applications where robust connections are paramount. Their outstanding temperature resistance further enhances their versatility, enabling reliable performance in both hot and cold extremes. In addition to fasteners, our product range extends to include various offerings such as Nickel 201 Nuts, Nickel 200 Washers, and more, ensuring comprehensive solutions to diverse industry requirements.
Standard SS 347 Fasteners specifications as per Fasteners manufacturers.
| 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.
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
10xC – 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 % |
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