Home > Stud Bolts > Stainless Steel 347H Stud Bolts
Weston Stainless, Midland, UK, is a well-known supplier of top-quality stainless steel products, such as Stainless Steel 347H Stud Bolts. These bolts are manufactured using grade 347H stainless steel, a stabilized austenitic steel with a greater carbon content compared to SS 347, exhibiting improved high-temperature strength and creep resistance. These bolts come in fully threaded, double-ended, and tap-end configurations, following ASTM A193 and ASTM A320 specifications. With better corrosion resistance, oxidation resistance, and fine mechanical strength, SS 347H Stud Bolts find widespread application in severe industrial and structural applications.
Stainless Steel 347H Stud Bolts contain 17-20% chromium, 9-13% nickel, columbium (niobium), and increased carbon content for enhanced strength at elevated temperatures. They possess a tensile strength of 515 MPa, yield strength of 205 MPa, and 40% elongation, providing high mechanical strength. With a density of 7.9 g/cm³ and melting point of approximately 1400°C, these bolts exhibit high resistance to intergranular corrosion, making them ideal for harsh environments.
|
Material |
Specification |
Standards |
Size |
Length |
|
Stainless Steel 347 / 347H Studbolt |
IS BS ASTM |
ASTM A193 B8C |
3 mm to 200 mm |
M02 to M33 |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
| SS 347H | 0.04 – 0.10 | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 19.00 | – | 9.0 -13.0 | – |
| Grade | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 347H | 8.0 g/cm3 | 1454 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
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Engineered for high-temperature and corrosive environments, providing exceptional strength and durability. Their resistance to oxidation and thermal stability make them ideal for critical applications.
Superior strength and corrosion resistance in extreme environments. Designed for high-temperature applications, they offer exceptional durability and performance under demanding conditions
High strength and corrosion resistance with a flush head design. Ideal for high-temperature applications, they provide a sleek, reliable fastening solution.
These SS 347H Stud Bolts find extensive applications in petrochemical, power generation, aerospace, and heat exchanger applications because of their superior thermal stability. They are best suited for boiler parts, superheater tubes, exhaust systems, and high-temperature processing equipment. Their creep and oxidation resistance properties make them ideal for high-pressure and high-temperature applications in industries such as oil refineries, nuclear power plants, and chemical processing units.
Stainless Steel 347H stud bolts are used extensively in applications that require resistance to high temperature and corrosion. Stud bolts from this alloy can be seen in the use of power plants, chemical processing, petroleum refining, and aerospace applications. Due to their extreme environments, these alloys are widely used in heat exchangers, boilers, and reactor vessels. The other benefits include the strength and toughness, making it useful for applications in marine environments, petrochemical industries, and high-stress mechanical assemblies.
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