Weston Stainless in Midland, UK, is a well-known supplier and manufacturer of high-quality stainless steel products that supply long-lasting solutions for numerous industrial uses. Among their best-selling products, Stainless Steel 439 Tubing stands out with its superior corrosion resistance, heat resistance, and formability. These tubes are produced using Grade 439 stainless steel and are sold in different shapes such as seamless and welded types. The composition, a titanium stabilized ferritic stainless steel alloy, is intended to do well in hot temperatures, with balanced strength, durability, and oxidation resistance.
Stainless Steel 439 Tube contains around 17-19% Chromium, 0.025% Carbon, 0.2-0.5% Titanium, and traces of Manganese, Silicon, and Phosphorus, which increase its corrosion and mechanical strength. These tubes have mechanical properties such as tensile strength of 415-585 MPa, yield strength of approximately 205 MPa, and elongation of 20-30%. They have good thermal conductivity in terms of physical properties, resistance to oxidation up to 850°C, and minimal thermal expansion to guarantee stability under high temperatures and consistent performance under hard conditions.
| GRADES | TP 439 Stainless Steel Tubes / UNS S43035 / DIN 1.4510 |
| SIZE | 1/2″ NB to 24″ NB |
| STANDARDS | ASTM A213, ASTM A249, ASTM A554, ASTM A269, ASTM A270, ASTM A790, ASTM A789 |
| TYPE | Seamless Tubes, Welded Tubes, EFW Tubes, ERW Tubes, Fabricated Tubes, Cold Drawn Welded Tubes (CDW Tubes) |
| FORM | Round Tubes, Square Tubes, Rectangular Tubes, Oval Tubes, Hydraulic Tube, etc. |
| END | Plain End, Treaded, Beveled End |
| TOLERANCE on Length | Commercial Length: 6000mm +/- 30mm Fix Length: from 1200 mm up to 12000mm with a tolerance up to -0/+ 5mm |
| FINISH | Seamless, Welded, Brushed, Pickled, Solution Annealed and Pickled up to O.D. 219.1mm, Polished Grit 120 – 600, Mirror Polished |
| Element | 439 |
| Carbon | 0.030 |
| Chromium | 17.0-19.0 |
| Nickel | 0.50 |
| Manganese | 1.00 |
| Silicon | 1.00 |
| Nitrogen | 0.030 |
| Phosphorus | 0.040 |
| Sulfur | 0.030 |
| Aluminum | 0.15 |
| Titanium | 0.20 +4(C+N) min |
| Property | 439 |
| Yield Strength, min. (ksi) | 30 |
| Tensile Strength, min. (ksi) | 60 |
| Elongation, min. (%) | 22 |
| Hardness, max. (Rb) | 89 |
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Stainless Steel 439 Tubing is extensively utilized in various industries like automotive, petrochemical, food processing, and construction because of its superior heat and corrosion resistance. These tubes are utilized in exhaust systems, heat exchangers, fuel systems, and industrial piping where high-temperature and oxidation resistance is essential. They also get utilized in architectural cladding, flue gas systems, and kitchen equipment, providing durability and reliability for structural components subjected to harsh environments.
This tubing is manufactured without any seams or welds, ensuring a uniform structure and high strength. It is available in a range of sizes, typically from 1/8 inch to 4 inches in diameter. Known for its excellent corrosion resistance and durability in high-temperature applications.
Produced by welding flat sheets of stainless steel into a tube shape, this option is often more cost-effective than seamless tubing. It is available in sizes ranging from 1/4 inch to 8 inches in diameter. Offers good corrosion resistance and is suitable for less demanding environments.
Designed for use in heat exchangers, this tube type features enhanced thermal conductivity and resistance to thermal cycling. Commonly available in sizes from 1/2 inch to 2 inches in diameter. It provides good corrosion resistance and thermal stability.
Ideal for precise measurement and control applications, this tubing is available in small diameters, typically from 1/16 inch to 1 inch. It offers high corrosion resistance and maintains integrity under high pressure and temperature conditions.
Used in boilers for transporting steam and other fluids, these tubes are available in sizes from 1 inch to 4 inches in diameter. They are highly resistant to oxidation and corrosion at elevated temperatures.
Shaped in a U-form, these tubes are used in applications where a flexible connection is needed, often in heat exchangers. They come in sizes from 1/2 inch to 2 inches in diameter. Known for their resistance to corrosion and ability to handle thermal expansion.
This tube type is used in condensers for heat exchange processes, typically available in sizes ranging from 1/2 inch to 2 inches in diameter. It offers high resistance to corrosion and fouling in challenging environments.
Equipped with fins to enhance heat transfer efficiency, these tubes are available in various sizes, commonly from 1 inch to 3 inches in diameter. They offer good corrosion resistance and are used in applications requiring efficient heat dissipation.
Stainless Steel 439 Tubing is supplied with required test certificates, such as Mill Test Certificates (MTC) according to EN 10204 3.1/3.2, third-party inspection reports, and material traceability records. The tubes are properly packed in wooden crates, pallets, or protective wrapping to prevent damage during transportation. Proper labeling facilitates easy identification, and deliveries are effectively handled to cater to global demand, ensuring industry standards compliance and timely delivery to customers across the globe.
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