Emilio Stainless, based in Manila, Philippines, is a well-respected manufacturer and supplier of top-notch stainless steel products, including Stainless Steel 304H Flanges. Known for their precision and durability, Emilio Stainless makes sure that their flanges adhere to international standards for strength, corrosion resistance, and heat tolerance. These flanges are crafted to deliver reliable, leak-proof connections in tough industrial settings, particularly where high temperatures and harsh conditions are the norm. Emilio Stainless stands behind their products, offering a blend of outstanding mechanical performance and long-lasting resistance to wear and corrosion.
Stainless Steel 304H Flanges is a high-carbon version of 304 stainless steel. It is intended for high-temperature applications. Its composition consists of 18-20% chromium, 8-10.5% nickel, and up to 0.04-0.10% carbon, along with trace elements of manganese, silicon, phosphorus, and sulfur. This alloy provides excellent corrosion resistance, especially in acidic and chloride environments. It has higher tensile strength (515-720 MPa) and yield strength (205 MPa) than 304, and it has a moderate hardness of 201 HB. It is generally used in chemical, petrochemical, and power generation industries for flanges, fittings, and other high-temperature applications because of its good weldability and formability.
| Standard | ASTM A182 / ASME SA182 |
| Dimensions | ANSI/ASME B16.5, B 16.47 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 | Mo | Ni | N |
| SS 304H | 0.08 max | 2 max | 0.75 max | 0.045 max | 0.030 max | 18 – 20 | – | 8 – 11 | – |
| 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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Stainless Steel 304H Flanges are crafted from a high-carbon variant of the 304 stainless steel alloy, which includes 18–20% chromium, 8–10.5% nickel, and a carbon content ranging from 0.04% to 0.10%. This specific composition boosts tensile strength, creep resistance, and stability at elevated temperatures up to 870°C, all while ensuring excellent corrosion resistance. The material showcases tensile strengths between approximately 515 to 750 MPa and maintains impressive toughness and ductility, even when faced with thermal stress.
SS 304H long weld neck flanges are designed for high-stress applications, featuring a long tapered neck that provides a strong, continuous weld connection. They offer excellent strength and resistance to leakage.
SS 304H lap joint flanges are versatile components designed for ease of assembly and disassembly. They feature a loose fit, allowing for easy alignment and maintenance, with excellent resistance to corrosion.
SS 304H reducing flanges are used to connect pipes of different diameters, providing a smooth transition between sizes. They ensure a secure, leak-proof joint while offering strong corrosion resistance and durability.
These flanges find their place in various industries, including power plants, petrochemical, chemical processing, oil and gas, and marine sectors. They are perfect for connecting piping systems, valves, pumps, and equipment that operate under high temperature and pressure conditions. Stainless Steel 304H Flanges offer secure, durable joints that resist scaling, corrosion, and thermal deformation, making them the go-to choice for critical high-temperature applications that demand strength and reliability.
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