Njabulo Stainless, based in Cape Town, South Africa, is a trusted manufacturer and supplier of premium Stainless Steel 439 Bars. These bars are made from ferritic stainless steel, combining excellent corrosion resistance with high strength and durability. Njabulo Stainless ensures precise dimensions, smooth surfaces, and consistent quality for reliable industrial and structural applications. Stainless Steel 439 bars are widely used in automotive, chemical, petrochemical, and construction industries, where resistance to oxidation, heat, and corrosion is essential. Their robust properties make them ideal for manufacturing, engineering, and high-temperature applications requiring long-lasting and dependable performance.
Stainless Steel 439 Bars are made from ferritic stainless steel 439, containing chromium (17–18%), molybdenum (up to 0.5%), and low carbon content, with minimal nickel. This composition provides excellent corrosion and oxidation resistance, especially in high-temperature and chloride-rich environments. Mechanically, 439 bars offer high tensile strength, hardness, and good thermal stability, maintaining dimensional integrity under stress and heat. Their ferritic structure ensures resistance to stress corrosion cracking and scaling, making them suitable for high-temperature industrial, structural, and mechanical applications requiring durability and long service life.
| 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.
Stainless Steel 439 Bars are widely used in automotive exhaust systems, heat exchangers, high-temperature industrial equipment, and structural components. Their high corrosion and oxidation resistance makes them ideal for chemical and petrochemical industries, power plants, and marine environments. In construction, they are used for structural supports and high-temperature fittings, while in manufacturing, they serve as raw material for machinery parts, shafts, and components exposed to heat or corrosive environments. 439 bars provide reliable, long-lasting performance, combining strength, durability, and corrosion resistance, making them suitable for critical industrial, structural, and high-temperature applications.
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