Stainless Steel 439 Pipes are crafted from a stabilized ferritic stainless steel grade that stands out for its impressive corrosion resistance, heat tolerance, and affordability. By incorporating titanium for stabilization, these pipes enhance weldability and resist intergranular corrosion. Their low nickel content not only keeps costs down but also ensures reliable performance in mildly corrosive and moderately high-temperature settings. Known for their durability and formability, Stainless Steel 439 Pipes maintain their strength even under thermal stress, making them ideal for a variety of industrial and engineering applications.
Typically, Stainless Steel 439 Pipes consist of 17–19% chromium, minimal carbon, and titanium as a stabilizing agent, which helps to prevent carbide precipitation during welding. This unique composition provides good oxidation resistance and boosts corrosion performance compared to standard ferritic grades. On the mechanical side, 439 pipes offer moderate tensile and yield strength, along with good toughness and excellent resistance to stress corrosion cracking. Their ferritic structure guarantees thermal stability, decent formability, and reliable performance in environments involving heat, mild chemicals, and exposure to the atmosphere.
| Specifications | ASTM A/ASME SA268/A731 CL |
| Dimensions | ASTM, ASME and API |
| Schedule | SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
| Wall Thickness | Sch 5s, 10s, 40s, 80s, 160, XXS |
| Size – Seamless 439 Pipes | 1/2″NB – 24″NB |
| ERW 439 Pipes | 1/2″ NB – 24″ NB |
| EFW 439 Pipes | 6″ NB – 100″ NB |
| Form | Round, Square, Rectangular, Hydraulic Etc |
| Types | Seamless / ERW / Welded / Fabricated / LSAW Pipes |
| End | Plain End, Beveled End, Treaded |
| Length | Single Random, Double Random & Cut Length. (Custom Sizes Available as per customers requirement) |
| Grade | C | Mn | Si | P | S | Cr | MO | Ni | CU | |
| 439 | Min | – | – | – | – | – | 12.0 | – | – | – |
| max | 0.15 | 1.00 | 1.00 | 0.04 | 0.03 | 14.0 | – | – | – | |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) | Brinell (HB) | ||||
| 439 | 95,000 | 50,000 | 25 | – | 175 |
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We ensures the highest quality standards for Stainless Steel 439 Pipes through rigorous testing and certification processes. Every pipe goes through extensive tests, including chemical analysis, mechanical testing, and dimensional inspection. In this regard, we provide suitable certificates like Mill Test Certificate (MTC) and ISO certifications to make sure every product stands as a reliable brand and follows the market norms.
Stainless Steel 439 Square Pipes offer excellent corrosion resistance and are used in applications requiring a robust structure. They typically come in sizes ranging from 1/2″ to 8″, with wall thicknesses varying based on the application.
These pipes offer superior corrosion resistance and are used in high-temperature environments. They are available in sizes from 1/4″ to 12″ in diameter, with wall thicknesses ranging from 0.5mm to 20mm.
Providing good corrosion resistance, these pipes are manufactured using the electric resistance welding process. They are available in sizes from 1″ to 12″ in diameter, with various wall thicknesses for different pressure ratings.
These pipes, known for their corrosion resistance, are produced by longitudinal submerged arc welding. Sizes typically range from 6″ to 48″ in diameter, with wall thicknesses from 5mm to 25mm.
Offering excellent corrosion resistance, these pipes are used in various industries. They come in sizes from 1/4″ to 12″ in diameter, with wall thicknesses ranging from 1mm to 15mm.
These pipes exhibit good corrosion resistance and are made by welding flat plates. They are available from 1″ to 24″ in diameter, with wall thicknesses tailored to specific pressure and temperature requirements.
These pipes are commonly found in automotive exhaust systems due to their heat resistance and stability during continuous thermal cycling. They also play a role in heat exchangers, furnace components, and industrial ventilation systems. In the construction sector, Stainless Steel 439 Pipes are used for architectural structures, cladding supports, and decorative features. Their corrosion resistance makes them a great fit for water treatment systems, mild chemical processing, and food equipment. Additionally, you’ll find these pipes in electrical enclosures, appliance components, and general fabrication where durability, cost-effectiveness, and moderate corrosion resistance are key.
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