Stainless Steel 904L Bars are made of 19–23% chromium, 23–28% nickel, 4–5% molybdenum, and 1–2% copper. They also have a low carbon content, which improves resistance to intergranular corrosion. These bars offer a tensile strength of around 490–710 MPa along with excellent ductility and toughness, even in sub-zero temperatures. The addition of molybdenum and copper ensures resistance to strong acids like sulfuric and phosphoric acid while maintaining good formability and weldability. These mechanical and chemical properties make 904L bars suitable for highly corrosive environments and demanding structural applications.
| Standards | ASTM / ASME |
| Designation | B 649, SB 649 |
| Grade | 904L Round Bars and Rods 904L Round Bars and Rods: ASTM B 649, ASME SB 649 |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | Cu |
|---|---|---|---|---|---|---|---|---|---|
| SS 904L | 0.020 max | 2 max | 1 max | 0.040 max | 0.030 max | 19.0-23.0 | 4.0-5.0 max | 23.00 – 28.00 | 1.0-2.0 |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
|---|---|---|---|---|
| 7.95 g/cm3 | 1350 °C (2460 °F) | Psi – 71000 , MPa – 490 | Psi – 32000 , MPa – 220 | 35% |
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Nakamura Stainless is a trusted manufacturer and supplier based in Pulau Ujong, Singapore. The company specializes in high-performance stainless steel products. Among its premium offerings, Stainless Steel 904L Bars are designed for exceptional strength and corrosion resistance in harsh environments. These bars are precision-machined and made under strict quality control to meet international standards. They are ideal for the chemical, marine, and pharmaceutical industries. The 904L bars from Nakamura Stainless provide long-term reliability and performance where standard stainless steels may fail due to high acidity, chlorides, or extreme temperatures. chemical properties make 904L bars suitable for highly corrosive environments and demanding structural applications.
904L round bars offer high resistance to corrosion and oxidation, ideal for harsh environments in chemical processing, marine, and pharmaceutical industries, providing durability and strength.
904L flat bars provide exceptional resistance to pitting and crevice corrosion, suitable for use in aggressive environments like chemical processing and marine applications, ensuring robust performance and longevity.
904L square bars deliver superior corrosion resistance and strength, perfect for structural applications in corrosive environments, such as chemical plants and marine environments, offering durability and reliability.
904L rectangular bars are designed for high corrosion resistance and strength, used in chemical processing, marine, and industrial applications, where durability and performance under harsh conditions are required.
904L hexagonal bars provide excellent corrosion resistance and are used in structural and mechanical applications, particularly in aggressive environments such as chemical processing and marine settings.
904L T-bars offer superior resistance to corrosion and high strength, ideal for structural support in corrosive environments like chemical plants and marine applications, ensuring long-lasting performance and reliability.
Nakamura Stainless is a leading supplier, and stockist of high-quality stainless steel 904L bars in Pulau Ujong, Singapore. Our products are widely used in various applications, and we are committed to delivering excellent service, resulting in high customer satisfaction. Our unique finishing techniques further distinguish us in the stainless steel industry. We are dedicated to consistently providing superior products and effectively meeting our customer’s needs.
Stainless Steel 904L Bars are widely used in situations where high corrosion resistance and mechanical strength are crucial. Common industries include chemical processing, pharmaceuticals, pulp and paper, marine engineering, and oil and gas refining. These bars are perfect for heat exchangers, pressure vessels, flanges, fasteners, and structural components exposed to strong acids and chlorides. Their long service life, resistance to pitting and crevice corrosion, and ability to withstand high temperatures make them a preferred material for critical components in tough operating conditions.
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