Home > Pipe Fittings > Stainless Steel 309H Pipe Fittings
Vinit Stainless, being a top manufacturer in Chennai, India, offers high-performance SS 309H pipe fittings for use in elevated-temperature and oxidizing conditions. SS 309H is the high-carbon variant of SS 309 with enhanced creep strength and high-temperature endurance. Our fittings are designed with accuracy and meet international quality standards. We provide elbows, tees, reducers, and others, suitable for applications like heat treatment, petrochemicals, and power generation. Vinit Stainless offers deep industry knowledge along with cutting-edge manufacturing to provide fittings that work under the toughest service conditions reliably.
SS 309H has about 23–25% Chromium, 12–15% Nickel, and 0.04–0.10% Carbon. It has superior oxidation resistance at temperatures up to 1038°C and improved creep strength because of increased content of carbon. The alloy provides tensile strength ranging from 515–730 MPa and yield strength approximately equal to 205 MPa. It is stable and maintains strength under prolonged thermal exposure. SS 309H is also weldable and resistant to corrosion in oxidizing as well as carburizing atmospheres, and it can be used for high-temperature structural 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 309H | 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 309H pipe fittings are high-temperature, corrosion-resistant components designed for extreme heat applications. They ensure durable, reliable connections in industrial furnaces, heat exchangers, and harsh environments.
SS 309H butt weld pipe fittings are high-temperature, corrosion-resistant components used for seamless, strong pipe connections. They ensure durability and reliability in extreme heat and harsh industrial environments.
SS 309H socket weld pipe fittings are high-temperature, corrosion-resistant components providing secure, leak-proof connections. They are designed for high-pressure applications, ensuring durability and reliability in extreme heat and harsh environments.
Stainless Steel 309H seamless fittings are high-strength, corrosion-resistant components crafted without joints. They offer robust, leak-proof connections in extreme heat and harsh environments, ensuring durability and reliable performance.
SS 309H cross pipe fittings are high-temperature, corrosion-resistant components that connect four pipes at a central junction. They provide strong, reliable connections in extreme heat and demanding environments.
Stainless Steel 309H tee fittings are high-temperature, corrosion-resistant components designed to connect three pipes at a right angle. They provide durable, reliable connections in extreme heat and harsh conditions.
SS 309H pipe fittings are suitable for furnace parts, radiant tubes, thermal oxidizers, and waste incineration plants. Their outstanding high-temperature strength makes them applicable to chemical processing, power generation, and heat treatment services. Fittings have good performance in applications with frequent thermal cycling and corrosive gases. SS 309H is applied in steel mills, refinery heaters, and boiler components. These fittings are appreciated because of their oxidative, thermal fatigue, and scaling resistance for ensuring performance and durability under high heat and mechanical loads.
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