Harsh Metalloys, located in Mumbai, India, stands out as a top manufacturer and supplier of high-quality Stainless Steel 304H Fasteners, celebrated for their remarkable strength and outstanding resistance to corrosion. Crafted from high-carbon 304 stainless steel, these fasteners are specifically engineered for high-temperature settings where superior mechanical properties are crucial. They are produced in accordance with international standards like ASTM and ASME, ensuring dependable performance in tough environments such as power plants, petrochemical sectors, and boilers. Harsh Metalloys provides an extensive selection of nuts, bolts, screws, and washers, offering robust and precisely engineered fastening solutions both in India and internationally.
Stainless Steel 304H Fasteners boast a chemical makeup that includes Chromium (18–20%), Nickel (8–12%), Carbon (0.04–0.10%), Manganese (≤2%), Silicon (≤1%), Phosphorus (≤0.045%), and Sulfur (≤0.03%). The increased carbon content enhances tensile strength, typically around 620 MPa, and yield strength close to 275 MPa, while still allowing for a good elongation of about 40%. These fasteners are known for their excellent resistance to oxidation and stress corrosion cracking at high temperatures, making them ideal for applications that demand enhanced mechanical stability and durability under thermal stress.
| Grade | Stainless Steel 304H |
| Specifications | ASTM A193 / ASME SA193, DIN, ASTM, BS and all International Standards |
| Length | 3mm to 200mm |
| Size | 3/6″ to 2″, M3 – M56, Custom Sizes |
| Form | Nuts, Bolts, Washers, Screw |
| Types | Bolts, Nuts, Washers, Anchor Fasteners, Stud Bolts, Eye Bolt, Stud, Threaded Rod, Cotter Pin, Socket Screw, Fine Fasteners & Spares, Foundation Fasteners etc |
| Packing of Stainless-Steel Fasteners: | IN BULK: pallet, canton, carton / small boxes / pallet or customer request |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
|---|---|---|---|---|---|---|---|---|---|---|
| 304H | min. | 0.04 | – | – | – | – | 18.0 | – | 8.0 | – |
| max. | 0.10 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | – | 10.5 | – | |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
|---|---|---|---|---|---|
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 304H | 515 | 205 | 40 | 92 | 201 |
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Known for their excellent corrosion resistance, Stainless Steel 304H Bolts are available in various sizes, typically from M6 to M30. They offer high strength and durability, making them suitable for high-temperature applications and harsh environments.
Offering superior corrosion resistance, Stainless Steel 304H Nuts are designed to match the bolts in size, ranging from M6 to M30. They ensure a secure and reliable fastening solution, particularly in applications subjected to elevated temperatures and corrosive conditions.
With exceptional corrosion resistance, Stainless Steel 304H Stud Bolts come in sizes from M6 to M30, providing reliable performance in high-temperature environments. They feature high tensile strength and are used in various industrial applications.
Stainless Steel 304H screws, known for their outstanding corrosion resistance, are available in sizes ranging from M6 to M30. They offer durability and strength for various applications, including those exposed to extreme conditions.
Renowned for their corrosion resistance, Stainless Steel 304H threaded rods are available in lengths from 300mm to 3000mm and diameters ranging from M6 to M30. They provide strength and reliability in high-temperature and corrosive environments.
Offering high corrosion resistance, Stainless Steel 304H washers are available in sizes that match standard bolt dimensions, ranging from M6 to M30. They ensure proper load distribution and prevent loosening in high-temperature and corrosive conditions.
Stainless Steel 304H Fasteners are widely utilized in high-temperature settings like power generation plants, boilers, heat exchangers, and the petrochemical industry. Thanks to their superior tensile strength and resistance to corrosion, they’re perfect for holding together components that experience thermal cycling and mechanical stress. You’ll also find these fasteners in furnace parts, pressure vessels, and exhaust systems, where durability in extreme heat is essential. Moreover, they’re used in the aerospace and automotive industries for parts that need to withstand high temperatures. Overall, 304H fasteners deliver dependable, long-lasting performance in critical structural and mechanical assemblies that demand both strength and corrosion resistance.
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