At Mitchell Stainless in Hamilton, New Zealand, we provide stainless steel piping solutions that are built for strength and high-temperature performance. Our Stainless Steel 304H Pipes are designed for applications where elevated temperature strength is required, offering superior durability compared to standard 304 grades. With a higher carbon content, these pipes maintain mechanical integrity under sustained heat while delivering excellent corrosion resistance. Supported by Mitchell Stainless’ local expertise and commitment to quality, 304H pipes are a dependable solution for industrial, chemical, and engineering projects where performance under extreme conditions is essential.
Stainless Steel 304H Pipes are manufactured from an austenitic stainless steel alloy containing chromium, nickel, and increased carbon content. The higher carbon improves high-temperature tensile strength and creep resistance while retaining corrosion resistance. These pipes offer good toughness, structural stability, and oxidation resistance at elevated temperatures. Stainless Steel 304H remains non-magnetic in the annealed condition and performs reliably in applications involving prolonged heat exposure where standard 304 or 304L grades may lose mechanical performance.
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Dimensions |
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ASTM, ASME and API |
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Standard |
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ASTM A312 / ASME SA312 |
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Size |
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1/8″NB TO 30″NB IN |
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Specialized in |
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Large Diameter Size |
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Schedule |
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SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
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Form |
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Round, Square, Rectangular, Hydraulic Etc |
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Type |
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Seamless / ERW / Welded / Fabricated / LSAW Pipes |
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Length |
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Single Random, Double Random & Cut Length. |
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End |
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Plain End, Beveled End, Threaded |
| Grade | 304H | |
|---|---|---|
| min | max | |
| C | – | 0.08 |
| Mn | – | 2.0 |
| Si | – | 0.75 |
| P | – | 0.045 |
| S | – | 0.03 |
| Cr | 16.0 | 18.0 |
| Mo | 2.0 | 3.0 |
| Ni | 10.0 | 14.0 |
| N | – | 0.10 |
| Grade | 304H | |
|---|---|---|
| Tensile Strength (MPa) min | 515 | |
| Yield Strength 0.2% Proof (MPa) min | 205 | |
| Elongation (% in 50mm) min | 40 | |
| Hardness | Rockwell B (HR B) max | 95 |
| Rockwell B (HR B) max | 217 | |
Contact us to get a quick quote for your requirement.
wE offers high quality stainless steel 304H pipe, rigorously tested to meet industry standards. Our pipelines undergo a broad spectrum of testing procedures, including chemical analysis, mechanical testing and pressure testing. Certificates of compliance and test certificates are issued to ensure the highest quality and efficiency of each batch delivered.
Stainless 304H square pipes are high-strength, corrosion-resistant tubes with a square cross-section. They are used in structural and architectural applications, offering durability and reliability in various industrial and commercial environments.
SS 304H seamless pipes are high-strength, corrosion-resistant tubes with no welded seams. Ideal for high-temperature and high-pressure applications, they offer durability and reliability in industries such as petrochemical and power generation.
Stainless Steel 304H ERW (Electric Resistance Welded) pipes are high-strength tubes produced by welding, offering excellent corrosion resistance and durability. They are used in various industrial applications requiring reliable performance.
SS 304H LSAW (Longitudinal Submerged Arc Welded) pipes are large-diameter, high-strength tubes with excellent corrosion resistance, used in heavy-duty applications like oil and gas pipelines and infrastructure projects.
Stainless Steel 304H round pipes are durable, high-strength tubes with a circular cross-section. They offer excellent corrosion resistance and are used in various applications, including construction, industrial processes, and infrastructure projects.
Stainless Steel 304H welded pipes are high-strength, corrosion-resistant tubes created by welding stainless steel strips. They are used in high-temperature and high-pressure applications, offering durability and reliability across various industries.
Stainless Steel 304H Pipes are commonly used in high-temperature and industrial applications. Typical uses include heat exchangers, boilers, pressure vessels, chemical processing equipment, and thermal systems exposed to sustained heat. They are also suited to power generation, petrochemical plants, and heavy engineering projects. At Mitchell Stainless, we supply 304H pipes for projects that demand reliability, strength, and corrosion resistance under elevated temperatures. Their ability to maintain mechanical integrity under heat makes them a trusted choice for industrial environments where both performance and longevity are critical.
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