At Mitchell Stainless in Hamilton, New Zealand, we supply stainless steel bars designed for high-temperature and demanding industrial applications. Our Stainless Steel 304H Bars are a high-carbon variant of 304, engineered to provide enhanced strength and creep resistance at elevated temperatures while maintaining excellent corrosion resistance. Ideal for boilers, pressure vessels, heat exchangers, and thermal processing equipment, these bars deliver long-term reliability in challenging environments. Supported by Mitchell Stainless’ commitment to quality and local expertise, 304H bars are a trusted solution for projects where mechanical integrity and heat resistance are essential.
Stainless Steel 304H Bars are manufactured from an austenitic stainless steel alloy with chromium, nickel, and increased carbon content. The higher carbon improves tensile strength and creep resistance at elevated temperatures, while preserving good corrosion resistance. These bars provide excellent toughness, hardness, and structural stability under prolonged heat exposure. Stainless Steel 304H retains its mechanical properties under high-temperature service, making it ideal for demanding industrial, chemical, and thermal applications where both strength and durability are critical.
| Stainless Steel 304H Round Bar Specification | ASTMA276 / A479, ASME SA276 / A479 |
|---|---|
| Dimensions | EN, DIN, JIS, ASTM. BS, ASME, AISI |
| Size | 14mm ~ 300mm |
| Thickness | 50 mm to 600 mm Long |
| Length | 2mm ~ 100 mm 1 to 6 Meters, Custom Cut Length |
| Form | Round, Square, Hexagonal, Rectangular |
| 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 |
Contact us to get a quick quote for your requirement.
we ensures premium quality stainless steel 304H bar through rigorous testing and certification programs. Our tapes undergo mechanical, chemical and non-destructive testing to meet international standards. Certified in ISO compliant material testing reports (MTRs), each material provides reliability, durability and performance for a variety of industrial applications
Stainless Steel 304H Round Bars are ideal for high-temperature applications, available in diameters ranging from 6mm to 500mm. These bars provide excellent strength and durability, perfect for use in pressure vessels and industrial boilers.
Stainless Steel 304H Flat Bars offer enhanced heat resistance and are available in thicknesses from 3mm to 100mm, and widths from 12mm to 300mm. Suitable for construction, automotive, and industrial applications requiring high strength and thermal stability.
Stainless Steel 304H Square Bars provide excellent mechanical properties, available in sizes ranging from 6mm to 150mm. Ideal for use in structural and architectural applications where high strength and heat resistance are essential.
Stainless Steel 304H Rectangular Bars are used in construction and industrial applications, available in thicknesses from 3mm to 100mm, and widths from 10mm to 200mm. These bars offer superior durability and heat resistance for demanding environments.
Stainless Steel 304H Hexagonal Bars are perfect for use in fasteners and fittings, available in sizes from 6mm to 100mm across flats. They provide high strength and excellent resistance to high temperatures, making them ideal for industrial applications.
Stainless Steel 304H T Bars offer excellent structural support, available in sizes from 20mm to 100mm in width. These bars are suitable for construction and architectural applications, providing high strength and thermal stability.
Stainless Steel 304H Bars are commonly used in high-temperature and industrial applications. Typical uses include boilers, pressure vessels, heat exchangers, thermal processing systems, and chemical processing plants. They are also suitable for power generation facilities, petrochemical equipment, and other installations exposed to sustained heat. At Mitchell Stainless, we supply 304H bars for projects that require reliable mechanical performance, corrosion resistance, and structural integrity under extreme conditions. Their combination of high-temperature durability, toughness, and dependability makes them a trusted choice for engineering, industrial, and chemical applications.
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