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Harsh Metalloys stands out as a leading manufacturer and supplier of Stainless Steel 17-4 PH Sheets and Plates, proudly based in Mumbai, India. These products are crafted from a unique martensitic precipitation-hardening stainless steel alloy (UNS S17400), celebrated for its impressive combination of high strength, corrosion resistance, and outstanding mechanical properties. The 17-4 PH alloy is particularly versatile, as it can be hardened through heat treatment, resulting in remarkable hardness and tensile strength. Harsh Metalloys offers these sheets and plates in a variety of thicknesses, widths, and tempers, all while adhering to standards like ASTM A693. This makes them perfect for demanding applications in aerospace, marine, nuclear, petrochemical, and general engineering, where they deliver exceptional performance under stress.
When it comes to composition and mechanical properties, Stainless Steel 17-4 PH Sheets and Plates are primarily made up of 15–17.5% chromium, 3–5% nickel, and 3–5% copper, along with some niobium (columbium). These elements work together to enable precipitation hardening and provide excellent corrosion resistance. In the H900 condition, this material can achieve a tensile strength of up to 1310 MPa, a yield strength of at least 1170 MPa, and an elongation of about 10%. The sheets and plates maintain their strength and toughness even at temperatures up to 600°F (316°C) and are magnetic in all conditions. They are also known for their minimal distortion during heat treatment, making them an ideal choice for high-precision applications that require dimensional stability.
| Grade | C | Mn | Si | P | S | Cr | Mo |
| SS 17-4PH | 0.07 max | 1.0 max | 1.0 max | .07 max | .03 max | 17.5 – 15.0 | .05 |
| Grade | Ultimate Tensile Strength, psi | Yield Strength, psi | Elongation | Rockwell Hardness |
| SS 17-4PH | 160,000 | 145,000 | 5% | C35 |
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Stainless Steel 17-4 PH Hot Rolled Sheets and Plates is available in any size. Sizing usually takes place between 3mm-150mm thick. The characteristics of the SS 17-4 PH are that they show excellent strength with high hardness in them, making their application possible under heavy wear resistance application.
Stainless Steel 17-4 PH Cold Rolled Sheets are available in 0.3mm to 6mm in thickness and up to 1500mm in width with a smooth surface finish. These sheets have improved mechanical properties and dimensional accuracy, thus suitable for precision components. It retains good corrosion resistance, suitable for aerospace and pharmaceutical industries.
Stainless Steel 17-4 PH Chequered Plates are offered in thickness between 3mm and 12mm with sizes up to 2500mm x 1250mm. Patterns give this chequered plate a slip resistance surface, making it aptly suited for industrial floors and stair treads. Corrosion resistance is excellent due to this alloy and ensures that durable service in harsh conditions will be possible.
Stainless Steel 17-4 PH Perforated Plates are available in a range of thicknesses from 1mm to 10mm and various hole sizes and patterns. The perforated design of these plates is used for filtration, ventilation, and decorative applications. They maintain high strength and corrosion resistance, making them suitable for marine and chemical processing industries.
Stainless Steel 17-4 PH Shim Sheets are precision thin sheets ranging from 0.1mm to 5mm in thickness and available in various dimensions. These sheets are used for precise alignment and spacing in machinery and equipment. They offer excellent corrosion resistance and durability in challenging environments.
Stainless Steel 17-4 PH Polished Plates are made in the following thicknesses, from 1mm up to 8mm, and size up to 2500mm x 1250mm. The plates possess a reflective surface finish. Such plates are used for architectural and decorative purposes where the aesthetic value is important and where corrosion resistance is required. The plates offer high strength and durability under outdoor and corrosive conditions.
Stainless Steel 17-4 PH Sheets and Plates are incredibly versatile and find their way into a variety of applications. You’ll see them in aerospace structural components, nuclear reactor hardware, marine fittings, chemical processing systems, pulp and paper machinery, and even petroleum equipment. What sets them apart is their outstanding corrosion resistance, particularly in mildly aggressive environments like those with chloride and salt. This makes them a go-to choice for offshore and coastal projects. Plus, their mechanical properties can be customized through heat treatment, making them perfect for valves, shafts, gears, jigs, and molds. With great machinability and weldability, along with impressive strength, they’re ideal for components that need to withstand high fatigue and stress corrosion.
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