Mitchell Stainless, a trusted manufacturer and supplier in Hamilton, New Zealand, provides high-quality Stainless Steel 304H fasteners designed for high-temperature and corrosion-resistant applications. 304H is a high-carbon version of the austenitic 304 stainless steel, offering excellent tensile strength and creep resistance at elevated temperatures. Mitchell Stainless ensures each fastener meets stringent quality standards, providing precise dimensions, consistent mechanical performance, and reliable long-term durability. These fasteners are ideal for industrial, chemical, power generation, and high-temperature process equipment where strength, corrosion resistance, and thermal stability are critical.
Stainless Steel 304H fasteners are composed primarily of iron, with 18–20% chromium, 8–10% nickel, and a higher carbon content (0.04–0.10%) compared to standard 304, along with small amounts of manganese and silicon. The elevated carbon content provides higher tensile strength and improved creep resistance at elevated temperatures. Chromium and nickel ensure excellent corrosion resistance and ductility, while the combination of alloying elements maintains mechanical integrity under high-stress, high-temperature conditions, making 304H fasteners suitable for demanding industrial applications.
| 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.
We put our Stainless Steel 304H Fasteners through various tests to guarantee high quality. The tests include hardness test, chemical analysis, Positive Material Identification (PMI), flattening tests, micro/macro examinations, pitting resistance evaluations, flaring tests, and Intergranular Corrosion (IGC) tests. Each of the fasteners undergoes an intensive inspection to ascertain that it can stand up to the high standards set in the industry for better performance and reliability. All efforts and measures to quality ensure that Stainless Steel 304H Fasteners provide strength, durability, and resistance in various industrial uses.
Stainless Steel 304H fasteners are widely used in boilers, pressure vessels, heat exchangers, chemical processing equipment, and high-temperature piping systems where elevated-temperature strength and corrosion resistance are essential. They are also suitable for maintenance and repair projects in petrochemical, power generation, and industrial sectors where durable, high-strength, and heat-resistant fastening solutions are required. In New Zealand’s fabrication and industrial sectors, 304H fasteners are valued for producing reliable, long-lasting assemblies that maintain structural integrity, resist thermal creep, and deliver excellent performance in aggressive chemical and high-temperature environments.
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