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Harsh Metalloys stands out as a leading manufacturer and supplier of SMO 254 Sheets and Plates, proudly based in Mumbai, India. Crafted from high-alloy austenitic stainless steel (UNS S31254), these sheets and plates are known for their remarkable resistance to pitting, crevice corrosion, and stress corrosion cracking caused by chlorides. They’re specifically designed for use in extremely corrosive and aggressive environments, making them perfect for critical applications in industries like chemical processing, marine, offshore, and desalination. Harsh Metalloys offers these products in a variety of sizes, thicknesses, and finishes, all meticulously fabricated to meet international standards for strength, corrosion resistance, and durability.
When it comes to composition and mechanical properties, SMO 254 Sheets and Plates are made up of 20% chromium, 18% nickel, 6% molybdenum, and nitrogen, which significantly boosts their mechanical strength and corrosion resistance. These plates boast a tensile strength of at least 650 MPa, a yield strength of at least 300 MPa, and an elongation of at least 35%. Thanks to their low carbon content, they offer excellent weldability and protection against intergranular corrosion. SMO 254 truly outshines many traditional stainless steels in tough environments, making these sheets and plates the go-to choice for applications where durability, structural integrity, and resistance to chlorides, acids, and high temperatures are crucial.
| STANDARD | Stainless Steel 348H Sheet and Plate |
| EN | X5CrNiMo17-12-2 / X3CrNiMo17-13-3 |
| JIS | SUS 316L |
| BS | 316S11 / 316S13 |
| UNS | S31603 |
| WERKSTOFF NO. | 1.4404 / 1.4435 |
| AFNOR | Z7CND17‐11‐02 |
| GOST | 03Ch17N14M3 / 03Ch17N14M2 |
| Elements | Carbon | Chromium | Manganese | Molybdenum | Nickel | Nitrogen | Phosphorus | Silicon | Sulphur |
|---|---|---|---|---|---|---|---|---|---|
| SMO 254 UNS S31254 | 0.02 max | 19.5-20.5 | 1.0 max | 6.0-6.5 | 17.5-18.5 | 0.18-0.22 | 0.03 max | 0.8 max | 0.01 max |
| 0.2% Proof Stress (N/mm2 ) [ksi] minimum | 300 [43.5] |
| Tensile Strength (N/mm2) [ksi] minimum | 650 |
| Elongation (%) minimum | 35 |
| Hardness (HBN) | 270 max |
| Reduction of Cross Section Area (%) | 50 |
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SMO 254 hot rolled plates have high strength and resistance to corrosion, and therefore, can be used for heavy-duty applications. The material is usually in a thickness range of 3mm to 50mm with width up to 2000 mm. It also comes in hot-rolled finish for strength and durability with the capability of sustaining high temperature and aggressive environment.
SMO 254 Cold Rolled Sheets provide a bright surface finish and excellent dimensional accuracy, with good corrosion resistance. These sheets are available in thickness from 0.5 mm up to 3 mm and widths up to 1250 mm. The strength of these sheets is improved by cold rolling, making them ideal for precision applications.
SMO 254 Chequered Plates offer an embossed pattern for increased slip resistance and longevity. Thickness options range from 3 mm to 12 mm, with a maximum width of 1500 mm. They are used as flooring in most industrial applications, offering great corrosion resistance.
SMO 254 Perforated Sheets come in different perforation patterns depending on the design and functional requirements of the application. They are offered in thickness ranges from 1mm to 6mm and width up to 1200 mm. Due to their high resistance to corrosion, they are used both for decorative as well as industrial applications.
SMO 254 Shim sheets are used with a spacing or aligned application for variety of usages. Generally made available with widths up to 1000mm and a standard thickness between 0.1 mm and 1mm these shim sheets promise excellent corrosion resistivity under stringent conditions, performing well even during long exposure.
SMO 254 Polished Plates have high-quality reflective surfaces and are aesthetically pleasing along with corrosion resistant. They have a thickness from 2mm to 25mm and can be up to 1500mm in width. The architectural and decorative usage is possible by the polished surface.
SMO 254 Sheets and Plates are incredibly popular in various fields like marine engineering, offshore oil platforms, desalination systems, chemical processing plants, pulp and paper industries, and flue gas desulfurization units. Thanks to their impressive resistance to pitting, crevice corrosion, and stress corrosion cracking, they’re perfect for applications such as heat exchangers, pressure vessels, storage tanks, evaporators, and other process equipment. Plus, these materials are also a go-to choice in food processing and pharmaceutical equipment because of their hygienic and non-reactive properties. SMO 254 Sheets and Plates meet international standards like ASTM B688, ASTM A240, and ASME SA240, guaranteeing top-notch quality and performance even in the toughest conditions.
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