904L / N08904 / EN 1.4539
Stainless steel 904L seamless tubes are primarily iron, with significant amounts of nickel, chromium, and molybdenum. This composition sets it apart from other stainless steel grades and contributes to its exceptional performance. The high nickel content (approximately 25%) provides excellent resistance to corrosion, even in harsh environments such as seawater and acidic solutions. Chromium (around 19-23%) enhances the material's resistance to oxidation and scaling at elevated temperatures. Molybdenum (approximately 4-5%) improves the tube's pitting and crevice corrosion resistance. Additionally, copper adds further resistance to reducing acids such as sulfuric acid.
Combining these elements results in stainless steel 904L seamless tubes being highly durable and capable of withstanding extreme conditions. They exhibit outstanding corrosion resistance, making them suitable for applications in chemical processing, oil and gas, pharmaceuticals, and marine environments. The high-performance nature of stainless steel 904L seamless tubes ensures extended service life and reduced maintenance requirements. Its ability to maintain structural integrity and resist corrosion even in aggressive environments makes it a preferred choice for various critical applications where reliability and longevity are crucial factors.
Stainless steel 904L seamless tubes possess several key properties and characteristics that make them highly suitable for diverse applications. Their exceptional corrosion resistance sets them apart. The high nickel and chromium content and the presence of molybdenum and copper impart remarkable resistance to a wide range of corrosive substances, including acids, chlorides, and seawater. This corrosion resistance ensures the longevity and reliability of the tubes in challenging environments.
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904L / N08904 / EN 1.4539 Specifications
| Types | Seamless & Welded |
|---|---|
| Form | Round, Square, Rectangle, Coil, "U" Tubes, Hydraulic & Honed Tubes |
| Size | 1/4" OD TO 12" OD. GAUGE: 25 SWG-10 SWG |
| Standard/Specification | ASTM, ASME, ISO, EN, NORSOK, JIS, NACE, DIN, AFNOR |
904L / N08904 / EN 1.4539 Chemical Composition (%)
| Elements | Carbon (C) | Manganese (M) | Phosphorus (P) | Sulfur (S) | Silicon (SI) | Chromium (CR) | Nickel (NI) | Molybdenum (MO) | Nitrogen (N) | Copper (CR) | Other Elements |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Composition (%) | 0.020 | 2.00 | 0.045 | 0.035 | 1.00 | 19.0–23.0 | 23.0–28.0 | 4.00–5.00 | 0.10 | 1.00–2.00 | - |
Application of 904L / N08904 / EN 1.4539
- Pulp & Paper Industries
- Ship Industries
- Aerospace Industries
- Refineries Industries
- Power Plant Industries
- Oil & Gas Industries
- Sugar Industries