Kyaw Stainless, a Naypyidaw, Myanmar-based company, is a renowned producer and distributor of superior stainless steel products, providing high-quality industrial solutions. Among their products, Stainless Steel 439 Bars are well-known for their superior corrosion resistance, thermal properties, and weldability. These bars, produced from Grade 439 stainless steel, come in a range of shapes such as round, square, hexagonal, and flat bars. The alloy, a low carbon and titanium-stabilized ferritic stainless steel, exhibits higher oxidation resistance and strength and is best suited for applications that demand durability, formability, and high-temperature properties.
These bars are primarily made up of iron, with 17–19% chromium, titanium, and trace amounts of manganese, silicon, and carbon. As a ferritic stainless steel grade, they offer excellent corrosion resistance, especially in oxidizing environments, along with good weldability and formability. In terms of mechanics, these bars boast a tensile strength of around 450–500 MPa and a yield strength of about 275 MPa, while also providing good ductility and hardness. They maintain their stability even at elevated temperatures and effectively resist stress corrosion cracking.
| 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 |
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Stainless Steel 439 Bars are used extensively in applications of the automotive, construction, petrochemical, and power generation industries because of their outstanding heat and corrosion resistance. They find extensive application in exhaust systems, heat exchangers, fuel system parts, industrial equipment, and kitchen appliances. Stainless Steel 439 Bars are also excellent for structural purposes, flue gas systems, and architectural applications involving long-lasting durability. Their good weldability and formability render them a choice in engineering and manufacturing sectors requiring cost-efficient, high-performance stainless steel bars.
Excellent corrosion resistance and high-temperature stability, ideal for automotive exhaust systems, industrial heat exchangers, and furnace components, ensuring durability in harsh environments.
Good oxidation resistance and mechanical properties, suitable for applications in water heaters, heat exchangers, and structural components in construction exposed to corrosive conditions.
Used in automotive and industrial applications, providing excellent corrosion resistance and stability, ideal for making structural components and fittings exposed to high temperatures.
Deliver strong corrosion resistance and high-temperature performance, perfect for heat exchangers, furnace parts, and structural components in various industrial and construction applications.
Excellent resistance to oxidation and stress corrosion cracking, ideal for fasteners, fittings, and components in automotive and industrial environments requiring high durability.
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 find their way into various applications, including automotive exhaust systems, heat exchangers, kitchen equipment, and industrial machinery. Their exceptional resistance to oxidation and corrosion makes them ideal for thermal applications and components that come into contact with moisture and chemicals. Additionally, these bars are utilized in construction, food processing, and petrochemical plants, where strength and cleanliness are crucial. Kyaw Stainless is committed to ensuring that its 439 Bars deliver outstanding performance, longevity, and reliability across a wide range of industries that demand durable and corrosion-resistant materials.
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