Harsh Metalloys, a reputable manufacturer and supplier located in Mumbai, India, focuses on producing top-quality Stainless Steel 304H Flanges. These flanges are celebrated for their remarkable strength, resistance to corrosion, and durability even at high temperatures, making them perfect for high-pressure and high-temperature piping systems. Adhering to international standards like ASTM A182 and ASME B16.5, our 304H flanges come in a variety of styles, including weld neck, slip-on, blind, and threaded options. At Harsh Metalloys, we prioritize consistent quality, precise dimensions, and timely delivery to satisfy the rigorous demands of power plants, petrochemical industries, and refineries.
Stainless Steel 304H Flanges are made up of Chromium (18–20%), Nickel (8–12%), and Carbon (0.04–0.10%), along with Manganese (≤2%), Silicon (≤1%), Phosphorus (≤0.045%), and Sulfur (≤0.03%). The higher carbon content enhances their tensile and creep strength at elevated temperatures. Typically, these flanges exhibit a tensile strength ranging from 515 to 620 MPa, a yield strength of about 205 to 275 MPa, an elongation of roughly 40%, and a hardness of up to 95 HRB. This unique composition ensures outstanding mechanical performance in high-heat settings, providing excellent resistance to oxidation and corrosion.
| 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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We provide high-grade 301L stainless steel flanges, stringently tested for durability, strength, and resistance. Each one goes through thorough testing including chemical composition analysis, mechanical property analysis, and dimensional verification before we present these to the market with high quality performance. Appropriate certifications accompany every flange that will guarantee conformance with international standards. Flanges designed for efficiency and reliability meet any criterion set for applications in a variety of industries. With superior material quality and precise manufacturing, our 301L stainless steel flanges provide exceptional performance and durability in meeting different demanding requirements in various industries.
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.
Stainless Steel 304H Flanges are a go-to choice for applications that demand both high-temperature strength and resistance to corrosion. They’re perfect for connecting pipes, valves, pumps, and other equipment in industries like power generation, petrochemical processing, oil and gas, and boiler systems. These flanges are known for their reliability in heat exchangers, condensers, superheaters, and furnace components, where maintaining thermal stability is crucial. Their robust durability and structural integrity under high pressure and heat make them a vital part of industrial piping systems, especially in scenarios where a long service life and minimal maintenance are key.
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