Mitchell Stainless, located in Hamilton, New Zealand, supplies high-quality Stainless Steel 348 flanges that industries can rely on for strength, stability, and long-term performance. These flanges are specially designed to handle high temperatures and corrosive conditions, making them a dependable choice for demanding applications. With a strong focus on precision manufacturing and quality control, Mitchell Stainless ensures every flange meets international standards. Their commitment to consistency, timely delivery, and customer support has made them a trusted partner for projects across power, chemical, and heavy engineering sectors.
Austenitic stainless steel alloy is stainless steel 348 flange with iron, chromium (18-20%), nickel (9-12%), and niobium with a carbon content being 10 times the amount of carbon which is 1-1.5. The material provides good resistance to intergranular corrosion and is optimized for retaining mechanical properties at high temperature. It has good weldability and formability along with resistance to oxidation and carburization. Its mechanical properties encompass tensile strength between 515 and 690 MPa, yield strength of 205 MPa, and elongation within 40% in 50 mm. High resistance to sulfuric and phosphoric acids make it ideal for harsh environments.
| Standard | ASTM A182 / ASME SA182 |
| Dimensions | ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN |
| Standard | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges |
| Size | 1/2″ (15 NB) to 48″ (1200NB) |
| Class/Pressure | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 |
| Flange Face Type | Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ) |
| SS 348 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 19.00 | 0.10 max | 9.00 – 12.00 | 5(C+N) – 0.70 max |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1457 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
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Stainless Steel 348 flanges are made from a chromium-nickel stainless steel alloy stabilized with niobium, which helps prevent corrosion after welding and during high-temperature service. This composition gives the material excellent strength, toughness, and resistance to oxidation. It performs reliably under pressure and thermal stress, while maintaining its structural integrity over time. The alloy is also known for its good weldability and resistance to intergranular corrosion, making it suitable for continuous operation in harsh industrial environments.
SS 348 blind flanges are used to seal the end of a piping system. Crafted from stainless steel, they offer high strength, corrosion resistance, and durability, making them suitable for high-pressure applications.
SS 348 ring type joint flanges ensure a secure, leak-proof seal in high-pressure applications. Constructed from stainless steel, they feature a precision-machined ring groove for enhanced sealing performance and durability.
SS 348 forged flanges are high-strength components designed for demanding applications. Made from stainless steel through a forging process, they offer superior durability, corrosion resistance, and reliability in high-pressure systems.
Stainless Steel 348 flanges are commonly used in industries where heat resistance and durability are critical. They are ideal for power plants, oil and gas pipelines, chemical processing units, and high-temperature piping systems. These flanges are also widely used in heat exchangers, boilers, and pressure vessels. Their ability to withstand extreme temperatures and corrosive conditions makes them a reliable choice for long-term industrial use, especially in applications where safety, performance, and minimal maintenance are essential.
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