Home > Forged Fittings > Stainless Steel 309H Forged 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 forged fittings. These fittings are designed for high-temperature and corrosive environments. They provide excellent resistance to oxidation, scaling, and thermal fatigue. Stainless steel 309H, a high-carbon version of 309, offers greater strength and creep resistance at high temperatures. Nakamura Stainless guarantees precise manufacturing and strict quality control, making 309H forged fittings suitable for tough applications in power plants, petrochemical industries, furnace systems, and heat treatment equipment.
Stainless steel 309H forged fittings usually contain 23 to 25% chromium, 12 to 15% nickel, and higher carbon content to enhance mechanical strength and high-temperature performance. These fittings have a tensile strength between 520 and 750 megapascals and maintain their structure at temperatures up to 1150°C. The alloy’s makeup ensures excellent resistance to oxidation, corrosion, and thermal degradation in harsh environments.
| Specifications | ASTM A403 / ASME SA403, ASTM A182 & ASME SA182 |
| Forged Fittings Standards | ASME 16.11, MSS SP-79, 83, 95, 97, BS 3799 |
| Buttweld Fittings Dimensions | ASME/ANSI B16.9, ASME B16.28, MSS-SP-43 |
| Buttweld Fittings Size | 1/8” NB TO 48” NB. (Seamless & 100% X-Ray Welded, Fabricated) |
| Forged Fittings Size | 1/8” NB to 4” NB (Socketweld & Screwed-Threaded) |
| Buttweld Fittings Type | Seamless / Welded / Fabricated |
| Forged Fittings Type | Socketweld Fittings, Screwed-Threaded Fittings |
| Forged Fittings Class | 2000 LBS, 3000 LBS, 6000 LBS, 9000 LBS |
| Buttweld Fittings Bending Radius | R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom |
| Buttweld Fittings Thickness | Sch 5s, Sch 10s, Sch 40s, Sch 80s, Sch 160s, Sch XXS |
| Grade | C | Mn | Si | P | S | Cr | Ni | Fe | |
| SS 309H | 0.04-0.10 | 2.0 | 0.75 | 0.045 | 0.03 | 22.0-24.0 | 15.0 | 58.0-63.0 | |
| Grade | Tensile Strengtd ksi (min) | Yield Strength 0.2% ksi (min) | Elongation % | Hardness (Brinell) max |
| 309H | 40 | 30 | 40 | 217 |
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All Stainless Steel 309H Forged Fittings produced at Nakamura Stainless are stringently tested for quality and performance. Every product is certified to international standards, including ISO, ASTM, and ASME specifications. The material analysis, hardness, tensile strength, and pressure test are also conducted on the entire range for reliability and adherence to different industrial applications.
Corrosion-resistant and durable Stainless Steel 309H Socket Weld Fittings are used in high-temperature applications. They typically come in sizes ranging from 1/4″ to 4″, designed to withstand pressures up to 3000 psi, offering a reliable connection in critical systems.
Known for excellent corrosion resistance, Stainless Steel 309H Threaded Fittings are ideal for high-temperature environments. They are available in sizes from 1/8″ to 6″, featuring standard threading for easy assembly and disassembly, making them suitable for various piping systems.
The Stainless Steel 309H Socket Weld 45 Degree Elbow has outstanding corrosion resistance and is designed for directional changes in piping systems. It comes from 1/2″ to 4″, offering a durable solution for high-temperature and high-pressure applications.
Stainless Steel 309H Threaded Tee offers superior corrosion resistance and creates branches in piping systems. Available in sizes ranging from 1/8″ to 6″, it ensures strong, leak-proof connections and is suited for high-temperature and pressure applications.
The Stainless Steel 309H Threaded Half Coupling offers excellent corrosion resistance and connects pipes of the same size. Sizes range from 1/8″ to 6″, designed for high-temperature environments, providing robust and secure fittings in piping systems.
The Stainless Steel 309H Socket Weld Cross has excellent corrosion resistance and allows for four-way connections in piping systems. Available in sizes from 1/2″ to 4″, it is ideal for high-temperature applications and offers a durable solution for complex pipe layouts.
Stainless steel 309H forged fittings are commonly used in piping and equipment that need strong and heat-resistant connections. Typical applications include boilers, heat exchangers, furnace piping, chemical processing units, and incinerators. Their ability to handle thermal cycling, scaling, and corrosive conditions ensures reliable performance and a long service life in critical industrial operations.
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