Andre Stainless is a well-regarded manufacturer and supplier of Stainless Steel 347 Flanges in Pulau Ujong, Singapore. SS 347 is a stabilized austenitic stainless steel known for its strong resistance to intergranular corrosion and high-temperature strength. These flanges are perfect for heat exchanger connections, pressure vessels, and high-pressure piping systems. We provide weld neck, slip-on, blind, and socket weld flanges in different sizes and pressure classes. Andre Stainless produces SS 347 flanges according to international standards, ensuring long-term reliability for important applications in the chemical, petrochemical, and aerospace sectors within Singapore.
Stainless Steel 347 consists of 17-20% chromium, 9-13% nickel, and niobium (columbium) to stabilize against carbide precipitation. It offers tensile strength of 515-750 MPa and yield strength around 205 MPa. SS 347 shows impressive resistance to intergranular corrosion after welding and performs well in high-temperature and oxidizing settings. It is non-magnetic in the annealed state and retains its mechanical properties over time under heat, making it suitable for flanges in thermal, pressure, and corrosive systems.
| 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) |
| Grade | C | Mn | Si | P | S | Cr | Cb | Ni | Fe |
| 347 | 0.08 | 2.0 | 1.0 | 0.045 | 0.030 | 17.00 – 20.00 | 10xC – 1.10 | 9.00 – 13.00 | 62.74 min |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 347 | 515 | 205 | 35 | 92 | 201 |
Contact us to get a quick quote for your requirement.
SS 347 socket weld flanges, manufactured from stainless steel alloy 347, ensure secure pipe connections with enhanced corrosion resistance and high-temperature strength, suitable for high-pressure systems in various industries.
SS 347 ring type joint flanges, constructed from stainless steel alloy 347, provide leak-proof connections with excellent corrosion resistance and high-temperature performance, ideal for high-pressure and critical service applications.
SS 347 forged flanges, made from stainless steel alloy 347, offer superior strength, excellent corrosion resistance, and high-temperature endurance, making them ideal for demanding industrial applications and high-pressure environments.
We offers the best quality Stainless Steel 347 Flanges which has undergone intense testing to produce top quality and performance. The flange is thoroughly tested for meeting international standards and specifications. Products supplied by us are certified by recognized authorities for traceability and reliability in each batch. With modern technology and strict quality control, we ensure durability, corrosion resistance, and good mechanical properties. Andre Stainless stands by the delivery of flanges with the highest level of industry standards in functionality and safety.
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