Mitchell Stainless is a reliable manufacturer and supplier of Stainless Steel 439 Bars based in Hamilton, New Zealand. They provide dependable ferritic stainless steel solutions for a variety of industries. With a strong commitment to quality, consistency, and customer satisfaction, Mitchell Stainless produces 439 bars that boast excellent corrosion resistance and thermal stability, all at competitive prices. Supported by modern manufacturing facilities, a skilled workforce, and rigorous quality control processes, the company guarantees products that adhere to international standards. Whether serving local or export markets, Mitchell Stainless is recognized for its timely deliveries, technical support, and tailored stainless steel bar solutions.
Stainless Steel 439 is a titanium-stabilized ferritic stainless steel, primarily composed of chromium (17–19%), with low carbon content and added titanium to enhance weldability and resistance to intergranular corrosion. These bars are known for their good mechanical strength, moderate hardness, and outstanding resistance to oxidation and stress corrosion cracking. They maintain stable mechanical properties even at elevated temperatures, offering excellent formability, thermal fatigue resistance, and dimensional stability, making them perfect for demanding industrial applications.
| Standard | ASTM A276, ASTM A479 |
| Dimensions | EN, DIN, JIS, ASTM, BS, ASME, AISI |
| Material Grade | Stainless Steel 439 (UNS S43035) |
| Stainless Steel 439 Bright Bars | Outside Diameter in the range of 4mm to 500mm |
| Stainless Steel 439 Bright Bars | Outside Diameter in the range of 4mm to 100mm |
| Stainless Steel 439 Hex Bars | 18mm – 57mm (11/16″ to 2-3/4″) |
| Stainless Steel 439 Square Bars | 18mm – 47mm (11/16″ to 1-3/4″) |
| Stainless Steel 439 Flats | 1/2” to 10” in thickness range of 2mm to 150mm, Custom Size Stainless Steel Flats available |
| Length | 1 to 6 Meters, Custom Cut Lengths |
| Form | Round, Square, Hex (A/F), Rectangle, Billet, Ingot, Forging Etc. |
| Finish | Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish |
| Grade | C | Si | Mn | P | S | Cr | Ti |
| 439 | 0.070 | 1.00 | 1.00 | 0.040 | 0.030 | 17.00~19.00 | ≥ 0.20+4(C+N)min – 0.50 max |
| Tensile strength | Yiled strength | Elongation | Hardness |
| 455 | 290 | 34 | 78 HB |
Contact us to get a quick quote for your requirement.
We ensures that all stainless steel 439 panels are rigorously tested to meet the highest standards. Each bar is mechanically, chemically and structurally analyzed. The company offers a range of relevant certifications, including Mill Test Certificates (MTC), to ensure compliance with international standards for durability, efficiency and reliability
439 round bars provide excellent corrosion resistance and high-temperature stability, ideal for automotive exhaust systems, industrial heat exchangers, and furnace components, ensuring durability in harsh environments.
439 flat bars offer good oxidation resistance and mechanical properties, suitable for applications in water heaters, heat exchangers, and structural components in construction exposed to corrosive conditions.
439 square bars are used in automotive and industrial applications, providing excellent corrosion resistance and stability, ideal for making structural components and fittings exposed to high temperatures.
439 rectangular bars deliver strong corrosion resistance and high-temperature performance, perfect for heat exchangers, furnace parts, and structural components in various industrial and construction applications.
439 hexagonal bars offer excellent resistance to oxidation and stress corrosion cracking, ideal for fasteners, fittings, and components in automotive and industrial environments requiring high durability.
439 T-bars provide good corrosion and heat resistance, suitable for structural support in construction and industrial applications, ensuring long-lasting performance in challenging environments.
The Stainless Steel 439 Bars produced by Mitchell Stainless in Hamilton find extensive use in the automotive, industrial, and engineering sectors. They are commonly utilized in exhaust systems, heat exchangers, brackets, supports, and structural components that are exposed to high temperatures. Their impressive resistance to corrosion, oxidation, and thermal cycling makes them ideal for chemical processing equipment and power generation components. Additionally, these bars are perfect for fabrication, machining, and welded assemblies where durability and cost-effectiveness are crucial.
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