Emilio Stainless, based in Manila, Philippines, stands out as a reputable manufacturer and supplier of Stainless Steel 439 bars. Renowned for its commitment to high-quality standards, meticulous fabrication, and dependable delivery, the company caters to a variety of industries that need durable, corrosion-resistant bar stock. With a strong focus on excellence, Emilio Stainless merges cutting-edge production methods with rigorous material testing to provide 439 stainless bars in multiple shapes—round, square, hex, and flat—customized to meet client needs for both local and export markets.
Stainless Steel 439 is a titanium-stabilized ferritic stainless grade that contains about 17.0–19.0% chromium, with carbon capped at ≤0.03%, manganese at ≤1.00%, silicon at ≤1.00%, phosphorus at ≤0.040%, sulfur at ≤0.030%, nickel at ≤0.50%, nitrogen at ≤0.03%, and titanium levels following the formula Ti ≥ 0.20 + 4*(C+N) up to around 1.10%. Its mechanical properties in the annealed state include a tensile strength of approximately 415‑550 MPa, yield strength (0.2% proof) of about 200‑250 MPa, elongation of at least 20‑23%, and hardness reaching around 180‐183 HB or 89 HRB.
| 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.
Emilio Stainless’s 439 stainless bars are ideal for applications that require excellent high-temperature oxidation resistance and corrosion resistance, particularly in oxidizing and mildly chloride-bearing environments. Typical uses include automotive exhaust and manifold components, heat exchanger tubes, parts for furnaces and boilers, architectural elements, and industrial equipment that undergoes thermal cycling. Due to its superior resistance compared to Type 409 in challenging exhaust conditions, 439 is a preferred choice in the automotive, petrochemical, and power generation industries.
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