Home > Pipe Fittings > Stainless Steel 309H Pipe Fittings
Nakamura Stainless, located in Pulau Ujong, Singapore, is a well-known maker and supplier of high-quality stainless steel products, including stainless steel 309H pipe fittings. These fittings are specially designed to handle high temperatures and corrosive environments. They offer excellent resistance to oxidation, scaling, and thermal fatigue. Stainless steel 309H is a high-carbon version of 309, providing more strength and better creep resistance at high temperatures. Nakamura Stainless follows precise manufacturing practices and strict quality control, making 309H pipe fittings suitable for tough applications in power plants, petrochemical industries, furnace systems, and heat treatment equipment.
Stainless steel 309H pipe fittings usually contain 23 to 25% chromium, 12 to 15% nickel, and a higher carbon content than 309S. This results in improved mechanical strength and high-temperature performance. These fittings have tensile strength that ranges from 520 to 750 megapascals and maintain structural integrity at temperatures up to 1150°C. The alloy’s composition gives it strong resistance to oxidation, corrosion, and thermal degradation in harsh environments.
| 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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We offers complete testing and certification of its stainless steel 309H pipe fittings. Each product undergoes rigorous inspection, including dimensions, mechanical and chemical testing, to ensure it meets international standards. Certificates including Mill Test Certificates (MTC) have been issued to ensure adequate reliability, durability and performance in various applications
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.
Stainless steel 309H pipe fittings are often used in piping systems that face extreme heat and corrosive conditions. Common applications include boilers, heat exchangers, furnace piping, chemical processing units, and incinerators. Their durability, heat resistance, and ability to handle thermal cycling ensure reliable performance and a long service life in critical industrial operations.







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