Home > Forged Fittings > Stainless Steel 348/348H Forged Fittings
Our Stainless Steel 348/348H forged fittings are made from a stabilized austenitic stainless steel alloy that includes chromium (17–20%), nickel (8–11%), and columbium (niobium), enhancing their resistance to intergranular corrosion. The 348H variant features a higher carbon content, which boosts its high-temperature strength. These fittings deliver a tensile strength of about 515 MPa and a yield strength of roughly 205 MPa. They also showcase excellent creep resistance, good weldability, and impressive corrosion resistance in oxidizing environments, especially at elevated temperatures. SS 348/348H forged fittings are perfect for applications that involve heat and pressure in corrosive atmospheres.
| STANDARD | Stainless Steel 348/348H Forged Fittings |
| EN | X5CrNiMo17-12-2 / X3CrNiMo17-13-3 |
| JIS | SUS 316L |
| BS | 316S11 / 316S13 |
| UNS | S31603 |
| WERKSTOFF NO. | 1.4404 / 1.4435 |
| AFNOR | Z7CND17‐11‐02 |
| GOST | 03Ch17N14M3 / 03Ch17N14M2 |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
| SS 348/348H | 0.08 max | 2 max | 0.75 max | 0.045 max | 0.030 max | 18 – 20 | – | 8 – 10 | – |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1400 °C (2550 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
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At Harsh Metalloys, all stainless steel 348/348H forged fittings are rigorously tested to ensure they meet international quality standards. Each product is tested for durability, corrosion resistance and high temperature performance. Accredited by recognized authorities, we issue Material Testing Reports (MTRs) for our fittings, ensuring reliability and customer confidence with every purchase.
Corrosion-resistant and ideal for high-temperature applications, these fittings provide robust, leak-proof connections. Common sizes range from ½” to 4″ in diameter. Socket weld fittings are used in industries like chemical processing and petrochemicals for their strength and reliability.
Offering excellent corrosion resistance, these fittings are designed for high-stress and high-temperature applications. Available sizes typically range from ¼” to 2″ in diameter. They ensure secure and leak-free connections and are ideal for use in oil and gas industries.
Highly resistant to corrosion, this elbow facilitates changes in direction with a 45-degree bend. Standard sizes range from ½” to 4″ in diameter. It redirects its flow in pipelines, especially in chemical and petrochemical industries.
Featuring superior corrosion resistance, this tee allows for branching off a main line. Sizes generally range from ¼” to 2″ in diameter. They are commonly used in high-temperature and high-pressure environments, ensuring durability and reliability in critical applications.
Known for its corrosion resistance, this half coupling is used to join pipes or tubes of the same diameter. Typical sizes range from ¼” to 2″ in diameter. It is essential for creating extensions or connections in industrial piping systems.
Corrosion-resistant and durable, this cross-fitting allows four-way connections in piping systems. Available in sizes from ½” to 4″ in diameter. It’s used in complex pipeline networks to facilitate multiple branch connections, especially in chemical and petrochemical industries.
You’ll find Stainless Steel 348/348H forged fittings commonly used in high-temperature and high-pressure environments like heat exchangers, reactors, boilers, and superheaters. They’re particularly well-suited for chemical processing, power generation, nuclear applications, and refineries, where resistance to intergranular corrosion and thermal fatigue is crucial. These fittings maintain their stability and structural integrity even under thermal cycling and are frequently used in piping systems that transport hot acids, steam, and gases. Their durability, strength, and corrosion resistance make SS 348/348H forged fittings a dependable choice for long-term service in critical process industries.
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