Khaled Stainless, based in Cairo, Egypt, specializes in providing top-notch Stainless Steel 347 flanges that are perfect for high-temperature and corrosion-heavy piping systems. Crafted with meticulous attention to metallurgy, precise machining, and exact dimensional tolerances, these stabilized flanges promise a long lifespan even in welded and thermally cycled settings. Khaled Stainless caters to vital industries such as refineries, petrochemical plants, steam-generation units, and furnace equipment manufacturers, offering reliable SS 347 flanges that resist carbide precipitation and maintain sealing integrity. With full certification, clean finishing, and consistent availability, the company guarantees dependable performance for demanding industrial and process applications.
Stainless Steel 347 is a niobium-stabilized austenitic stainless steel that contains about 17–19% chromium, 9–13% nickel, and controlled niobium additions to prevent chromium carbide formation at elevated temperatures. The carbon content is kept below 0.08% to improve weldability. Its mechanical properties typically feature a tensile strength of 515–750 MPa, yield strength of 205–310 MPa, and elongation of 30–40%. SS 347 offers outstanding resistance to intergranular corrosion and maintains stable mechanical strength in temperatures ranging from 425–900°C, where non-stabilized grades tend to break down quickly.
| 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 |
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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. Khaled Stainless stands by the delivery of flanges with the highest level of industry standards in functionality and safety.
SS 347 flanges are commonly utilized in high-temperature process systems where resistance to intergranular corrosion and thermal degradation is crucial. Typical applications include refinery heaters, boiler and superheater assemblies, heat exchangers, exhaust manifolds, petrochemical process piping, thermal oxidizers, and power-generation steam circuits. These flanges are reliable in welded systems that undergo repeated heating cycles. Their stability against carbide precipitation ensures they perform well in demanding environments, making them a go-to choice for various industrial applications.
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