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Harsh Metalloys stands out as a reputable manufacturer and supplier of Stainless Steel 418 Sheets and Plates, based in Mumbai, India. Commonly referred to as UNS S41800 or 12% Cr steel, this alloy features added nickel and molybdenum, making it a high-strength martensitic stainless steel known for its impressive hardness, corrosion resistance, and wear resistance. These sheets and plates are perfect for applications that require a blend of mechanical strength and moderate corrosion resistance. Harsh Metalloys provides SS 418 sheets and plates in a variety of sizes, thicknesses, and finishes, catering to industries like defense, aerospace, tooling, and heavy machinery, all while adhering to ASTM and ASME standards.
SS 418 Sheets and Plates typically consist of about 12–14% chromium, 1.5–2.5% nickel, 0.20–0.50% molybdenum, and 0.20–0.50% carbon. This unique composition grants it remarkable hardenability, strength, and moderate corrosion resistance. The alloy boasts a tensile strength ranging from 850–1000 MPa, yield strength between 500–700 MPa, and an elongation of 10–15%, depending on the heat treatment applied. These sheets and plates are magnetic and can undergo heat treatment to boost hardness and toughness. SS 418 also offers enhanced abrasion and pitting resistance compared to standard martensitic grades, making it an excellent choice for demanding mechanical applications.
| Specifications : | ASTM B441 / ASME SB196 |
| Dimensions : | AISI, ASTM, ASME, DIN, BS, EN, ISO, JIS, GOST, SAE, IS & Custom Chemistry |
| Production Route : | Hot Rolled, Cold Rolled |
| Size : | Width from 100mm to 3000mm ; Length from 500mm to 12000mm |
| Thickness : | 0.1mm to 400mm |
| Delivery Condition : | As Rolled, Annealed, Quenched and Tempered, Normalized |
| Surface Finish : | Plain, Brushed, Cladded |
| Element | Content (%) |
| Iron, Fe | 82 |
| Chromium, Cr | 13 |
| Tungsten, W | 3 |
| Nickel, Ni | 2 |
| Properties | Metric | Imperial |
| Tensile strength | 895 MPa | 130000 psi |
| Yield strength (@strain 0.200 %) | 725 MPa | 105000 psi |
| Modulus of elasticity | 190-210 GPa | 27557- 30457 ksi |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
| Elongation at break | 15% | 15% |
| Hardness, Rockwell C | 25 | 25 |
| Density(lb/ft3) | Electrical conductivity(% IACS) | Thermal conductivity(BTU/h-ft-°F) | Specific heat capacity(BTU/lb-°F) | Thermal expansion(µm/m-K) |
| 500 | 2.8% | 15 | 470 | 10 |
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SS 418 Cold Rolled Sheets are stainless steel sheets of excellent strength, durability, and smooth surface finish. Sheets are available in different sizes and usually vary between 0.3mm and 6mm in thickness with widths and lengths according to individual industrial requirements.
SS 418 Chequered Plates are high-quality stainless steel plates with a textured, non-slip surface, ideal for heavy-duty applications requiring durability and traction. The plates are available in sizes from 1mm to 10mm in thickness, with standard lengths and widths.
SS 418 perforated plates are of top quality stainless steel sheets which have precise perforations and have industrial applications. It is also available in standard sizes in a thickness of 0.5 mm to 6 mm and hole diameter ranges from 1 mm to 25 mm for great strength and flexibility.
SS 418 shim sheets are precision-engineered stainless steel sheets. They have used gap-filling, alignment, and leveling applications. These are available in sizes varying from 0.05mm to 5mm in thickness and even customized with respect to length and width. They offer excellent corrosion resistance and durability for industrial use.
SS 418 Polished Plate is a finished stainless steel product with excellent resistance to corrosion in the form of a polished product. Plates made from this steel are available in different sizes-from 4′ x 8′ standard commercial sizes to highly customized dimensions designed for multiple industries and architectural features.
Stainless Steel 418 Sheets and Plates are incredibly popular in a variety of applications, from aerospace components and military-grade gear to cutlery, surgical instruments, pumps, valves, turbine blades, and high-wear machine parts. Thanks to their impressive strength and hardness, they shine in high-stress and impact-resistant settings, such as tooling dies, shafts, and bearings. SS 418 holds up well in moderately corrosive environments and is resistant to pitting and wear, making it a go-to choice in industries like petrochemical, marine, and power generation. These plates are especially prized for their dimensional stability, edge retention, and mechanical durability, which are essential for maintaining long-term performance under dynamic loading conditions.
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