Home > Pipe Fittings > Stainless Steel 347H Pipe Fittings
Weston Stainless, a UK-based Midland company, is a prominent supplier of high-grade stainless steel products, and its specialty includes industrial components like pipe fittings, flanges, and fasteners. Among its high-end products, Stainless Steel 347H Pipe Fittings are especially prized for their impeccable high-temperature strength, corrosion resistance, and durability. SS 347H is a niobium stabilized version of grade 347 with high carbon, which is designed to avoid carbide precipitation. These fittings come in a range of shapes such as elbows, tees, reducers, crosses, caps, and stub ends to ensure piping system versatility. Made of high-quality stainless steel, SS 347H Pipe Fittings exhibit superior mechanical strength, resistance to oxidation, and durability
Stainless Steel 347H Pipe Fittings contain 17-19% chromium, 9-13% nickel, and an increased carbon content (0.04-0.10%) for increased creep resistance. They also have niobium, which enhances stability and resistance against intergranular corrosion. These fittings have good mechanical characteristics, such as tensile strength of about 515-700 MPa, yield strength of 205-275 MPa, and elongation of 40%. The hardness of SS 347H Pipe Fittings is between 160-190 HB, guaranteeing durability. They are physically dense, with a density of 7.93 g/cm³, good thermal conductivity, and high-temperature resistance properties, which are why they are suitable for demanding applications.
| Grades | 201, 202, 304, 304L, 304H, 309S, 309H, 310S, 310H, 316, 316TI, 316H, 316L, 316LN, 317, 317L, 321, 321H, 347, 347H, 904L |
| Type | Seamless / Welded / Fabricated |
| Bending Radius | R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom |
| Size | ½”NB to 48″NB in |
| Schedule | Sch 10s, 40s, 80s, 160s, XXS. |
| Dimensions | ANSI/ASME B16.9, B16.28, MSS-SP-43. |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
| SS 347H | 0.10 max | 2.0 max | 0.75 max | 0.045 max | 0.03 max | 18 – 20 | – | 8 – 10.5 | – |
| Density | 8.0 g/cm3 |
| Melting Point | 1400 °C (2550 °F) |
| Tensile Strength | Psi – 75000 , MPa – 515 |
| Yield Strength (0.2%Offset) | Psi – 30000 , MPa – 205 |
| Elongation | 35 % |
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Stainless Steel 347H Pipe Fittings are extensively used in applications involving high-temperature and corrosion-resistant piping systems. They are typically used in the power generation, chemical processing, petrochemical, and aerospace industries, where there is a possibility of exposure to high temperatures and corrosive materials. These fittings are critical in heat exchangers, boilers, reactor parts, and high-pressure pipelines. Their superior oxidation and creep resistance allow them to be used in oil refineries, offshore platforms, and marine environments. With better mechanical strength and weldability, SS 347H Pipe Fittings provide dependable and durable performance under severe industrial conditions.
High-temperature-resistant components made from stainless steel 347H, offering excellent strength, oxidation resistance, and durability, ideal for demanding industrial and aerospace applications.
High-temperature-resistant components used to join pipes through welding. Made from stainless steel 347H, they provide strength, durability, and corrosion resistance in extreme environments.
High-temperature components used to connect pipes via a socket weld. Made from stainless steel 347H, they offer excellent strength, corrosion resistance, and durability.
High-temperature-resistant components with no welds, providing superior strength, durability, and corrosion resistance, ideal for demanding industrial and aerospace applications.
High-temperature-resistant components that connect four pipes at a junction. Made from stainless steel 347H, they offer strength, durability, and resistance to oxidation and corrosion.
High-temperature-resistant components that create a T-junction, connecting three pipes. Made from stainless steel 347H, they provide strength, durability, and resistance to oxidation and corrosion.
Stainless Steel 347H Pipe Fittings are supplied with necessary test certificates such as Mill Test Certificates (MTC), third-party inspection reports, and compliance documents to guarantee quality assurance. Secure packaging is done using wooden crates, bubble wraps, or carton boxes to avoid transit damage. Deliveries are prompt, serving domestic and international customers with reliable logistics support. Custom packaging and specifications are offered to suit industry-specific needs, ensuring customers receive high-quality, defect-free products customized to their requirements.
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