Weston Stainless, located in Midland, UK, is a leading supplier of high-quality stainless steel products, catering to industries requiring durable and heat-resistant materials. Among their offerings, Stainless Steel 309H Pipes are well-known for their superior strength and high-temperature resistance. The 309H grade is an austenitic stainless steel with a higher carbon content, enhancing creep resistance and mechanical strength. Composed of iron, 22-24% chromium, 12-15% nickel, and 0.04-0.10% carbon, these pipes are available in seamless, welded, and ERW shapes. They are widely used in heat exchangers, boilers, furnaces, and petrochemical industries for their excellent thermal performance.
Stainless Steel 309H Pipes have a composition of iron with 22-24% chromium, 12-15% nickel, 0.04-0.10% carbon, and small amounts of manganese, silicon, phosphorus, and sulfur, providing enhanced oxidation and heat resistance. Their mechanical properties include a tensile strength of 620 MPa, yield strength of 310 MPa, and elongation of 40%, ensuring durability under high-stress conditions. The physical properties feature a density of 7.9 g/cm³, a melting point of 1350-1400°C, and a thermal conductivity of 15.6 W/m·K. These characteristics make 309H pipes ideal for high-temperature applications in power plants, refineries, and heat treatment industries.
| Thickness | 0.5mm-100mm | ||||||
| Outer diameter | 10mm, 25.4mm, 38.1mm, 50.8mm, 100mm, 250mm, 300mm, 350mm, etc | ||||||
| Length | 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc | ||||||
| Surface | 2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, checkered, embossed, hair line, sand blast, Brush, etching, etc | ||||||
| Finish | Hot rolled (HR), Cold rolled Tube (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated) | ||||||
| Form | Round tube Square tube Rectangular tube etc. | ||||||
Grade | Ni | Mn | P | C | S | Si | Cr | Mo | N | |
309H | min. | 8.0 | – | – | – | – | – | 18.0 | – | – |
max. | 10.5 | 2.0 | 0.045 | 0.08 | 0.030 | 0.75 | 20.0 | |||
Grade | Tensile Strength (MPa) min | Elongation (% in 50mm) min | Yield Strength 0.2% Proof (MPa) min | Hardness | |
Rockwell B (HR B) max | Brinell (HB) max | ||||
309H | 515 | 40 | 205 | 92 | 201 |
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Stainless Steel 309H Pipes are widely used in high-temperature and high-pressure environments due to their superior heat resistance and mechanical strength. They are commonly found in heat exchangers, boilers, furnaces, and refractory equipment, making them essential in industries such as power generation, petrochemicals, and thermal processing. These pipes are also used in burner assemblies, exhaust systems, annealing covers, and catalytic recovery systems. Their excellent oxidation resistance and durability make them ideal for chemical plants, incinerators, and food processing industries, ensuring reliable performance in extreme conditions where strength and corrosion resistance are crucial.
Square-shaped pipes made from 309H stainless steel, offering high-temperature resistance, durability, and corrosion resistance, ideal for structural and high-heat applications.
Pipes made from 309H stainless steel without welded seams, providing superior strength, high-temperature resistance, and excellent durability for demanding industrial and high-heat applications.
Electric resistance welded pipes made from 309H stainless steel, known for high-temperature resistance and durability, used in various industrial and heat-intensive applications.
Longitudinally submerged arc welded pipes made from 309H stainless steel, offering high heat resistance and strength, suitable for high-pressure and high-temperature industrial applications.
Cylindrical pipes made from 309H stainless steel, providing excellent heat resistance, durability, and corrosion resistance, ideal for high-temperature and industrial applications.
309H stainless steel, joined by welding. They offer high-temperature resistance, durability, and strength, suitable for various industrial and high-heat applications.
Stainless Steel 309H Pipes come with test certificates such as Mill Test Certificates (MTC) as per EN 10204 3.1/3.2, third-party inspection reports, and material traceability documents, ensuring quality compliance. Packaging is done securely using wooden crates, pallets, and bubble wraps to prevent transit damage. Delivery is prompt and efficient, catering to both domestic and international markets with proper labeling, handling, and secure transportation to ensure safe arrival at the destination.
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