Home > Forged Fittings > Stainless Steel 347/347H Forged Fittings
Aditya Stainless stands out as a reliable manufacturer and supplier of Stainless Steel 347/347H Forged Fittings right in Kolkata, India. They offer top-notch products that are specifically designed to thrive in high-temperature and corrosive settings. SS 347 is enhanced with niobium to boost its resistance to intergranular corrosion, while 347H, the high-carbon variant, delivers extra strength when the heat is on. These forged fittings come in various forms like elbows, tees, couplings, nipples, and unions, all adhering to ASTM A182 and ASME B16.11 standards. Built for seamless operation in tough conditions, they find their place in refineries, aerospace, chemical processing, and heat exchanger systems.
Stainless Steel 347/347H Forged Fittings are made up of 17–19% chromium, 9–13% nickel, and are stabilized with niobium (columbium). The 347H variant has a higher carbon content (0.04–0.10%) to provide better creep strength at elevated temperatures. These fittings boast a tensile strength of 515 MPa, a yield strength of 205 MPa, and an elongation of 35%. They are known for their excellent resistance to oxidation and crevice corrosion, performing reliably even under thermal cycling conditions. Their unique composition makes them perfect for applications that require consistent heating and exposure to harsh chemicals.
Stainless Steel Forged Fittings Specification : ASTM A182 / ASME SA182
Dimension Standard : ASME B16.11, MSS-SP-79, MSS-SP-83, MSS-SP-95, MSS-SP-97, BS3799
Size : 1/8″ NB to 4″ NB
Type : Socketweld Fittings, Screwed-Threaded Fittings (NPT or PT Type)
Rating Pressure : Threaded End – 2000 /3000/ 6000 LBS. Socket-weld End – 3000 / 6000/ 9000 LBS.
| C | Cr | Mn | Ni | P | S | Si | Cb/Ta | |
|---|---|---|---|---|---|---|---|---|
| 347 | 0.08 max | min: 17.0 max: 20.0 | 2.0 max | min: 9.0 max: 13.0 | 0.04 max | 0.30 max | 0.75 max | min:10x C max: 1.0 |
| 347H | min: 0.04 max: 0.10 | min: 17.0 max: 20.0 | 2.0 max | min: 9.0 max: 13.0 | 0.03 max | 0.30 max | 0.75 max | min:10x C max: 1.0 |
| Grade | Tensile Strength ksi (MPa) min | Yield Strength 0.2% ksi offset ksi (MPa) min | Elongation (% in 50mm) min | Hardness (Brinell) MAX | Hardness (Rockwell B) MAX |
|---|---|---|---|---|---|
| 347/347H | 75 (515) | 30 (205) | 40 | 201 | 95 |
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At Aditya Stainless, all stainless steel 347/347H forged fittings are rigorously tested to ensure unmatched quality and performance. Each product is certified to international standards, including ISO, ASTM and ASME. Comprehensive testing such as fluid stability, ultrasonic and mechanical analysis provides reliability, stability and compliance for various industrial applications.
Highly resistant to intergranular corrosion, these fittings are designed for high-pressure applications. They provide a secure, leak-proof connection in sizes from 1/4″ to 4″ and various pressure ratings.
Offering exceptional resistance to oxidation and high-temperature environments, these fittings are available in sizes from 1/8″ to 4″ NPT. They are ideal for applications where high strength and durability are required.
Resistant to both corrosion and high temperatures, this elbow allows for smooth changes in pipe direction at a 45-degree angle. Sizes range from 1/2″ to 4″, accommodating various pipe dimensions.
With excellent resistance to corrosion and high temperatures, this tee connects three sections of pipe, allowing for changes in direction. Available in sizes from 1/4″ to 4″ NPT.
Featuring strong corrosion resistance and suitability for high-temperature use, this coupling connects a pipe to a threaded fitting. Common sizes include 1/4″ to 2″ NPT.
Known for its durability and resistance to corrosive environments, this cross-fitting enables four-way connections between pipes. Available in sizes from 1/2″ to 2″, it ensures robust and reliable performance.
Stainless Steel 347/347H Forged Fittings are widely utilized in high-temperature piping, steam services, and chemical plants where intergranular corrosion resistance is essential. They are particularly effective in petrochemical processing, power generation, aerospace applications, and welded pressure vessels that operate above 427°C. The 347H variant is favored for situations that demand superior creep resistance and mechanical strength under thermal stress. These forged fittings guarantee leak-proof connections and long-lasting durability, even in aggressive environments filled with acids, chlorides, or oxidizing agents. Their thermal stability and mechanical strength make them a go-to choice for demanding applications.
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