At Mitchell Stainless in Hamilton, New Zealand, we provide stainless steel piping solutions designed for high-temperature and demanding industrial environments. Our Stainless Steel 309S Pipes are engineered to resist oxidation and maintain strength under sustained heat, making them ideal for furnaces, kilns, and thermal processing equipment. With a low carbon content, these pipes offer enhanced resistance to carbide precipitation while providing excellent high-temperature performance. Supported by Mitchell Stainless’ commitment to quality and local expertise, 309S pipes deliver reliable and long-lasting performance in industries where extreme heat and durability are critical.
Stainless Steel 309S Pipes are manufactured from an austenitic stainless steel alloy with high chromium and nickel content and low carbon levels. This composition provides excellent oxidation resistance and structural stability at elevated temperatures. The reduced carbon content helps prevent carbide precipitation during thermal cycling, enhancing long-term performance. These pipes maintain good tensile strength, toughness, and dimensional stability under continuous high-heat exposure, making them suitable for demanding industrial applications where reliability and durability are essential.
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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 | 309S | |
|---|---|---|
| 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 | 309S | |
|---|---|---|
| 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 makes sure that Stainless Steel 309S Pipes undergo intense testing such as mechanical, chemical, and dimensional analysis. The corrosion resistance, strength, and durability of every pipe are carefully tested. Compliance certificates are issued that verify the performance, reliability, and safety of the products according to global standards for application in various industries.
Stainless 309S square pipes are high-temperature resistant, corrosion-resistant tubes with a square cross-section. They are used in structural and industrial applications requiring durability and strength under extreme conditions.
SS 309S seamless pipes are high-temperature resistant, corrosion-resistant tubes with no weld seams. Ideal for demanding environments, they offer durability and strength in applications like aerospace, power generation, and chemical processing.
Stainless Steel 309S ERW (Electric Resistance Welded) pipes are high-temperature resistant tubes created by welding. They offer durability and corrosion resistance, suitable for structural and industrial applications under extreme conditions.
SS 309S LSAW (Longitudinal Submerged Arc Welded) pipes are high-strength tubes with excellent high-temperature and corrosion resistance, used in large-diameter applications like pipelines and heavy-duty structural projects.
Stainless Steel 309S round pipes are high-temperature resistant, corrosion-resistant tubes with a circular cross-section. They are used in various applications, including industrial, structural, and high-heat environments, offering durability and strength.
Stainless Steel 309S welded pipes are high-temperature resistant tubes created by welding stainless steel strips. They offer excellent corrosion resistance and durability, suitable for applications requiring strength and performance under extreme conditions.
Stainless Steel 309S Pipes are widely used in high-temperature industrial applications. Typical uses include furnaces, kilns, heat exchangers, thermal processing equipment, boilers, and petrochemical plants. They are also suitable for power generation facilities and industrial systems exposed to prolonged heat and thermal cycling. At Mitchell Stainless, we often supply 309S pipes for projects requiring consistent high-temperature performance and long-term durability. Their low-carbon composition combined with excellent oxidation resistance makes them a trusted choice for industries where heat resistance and structural integrity are essential.
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