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Home > Stainless Steel > Stainless steel 904L Welded Tubing
Bosega Pipes and Tubes, based in Cape Town, South Africa, stands out as a top supplier of high-performance **Stainless Steel 904L Welded Tubing**. This tubing is crafted for applications that require outstanding corrosion resistance and structural integrity, making it ideal for environments where standard stainless steels might not hold up, such as chemical plants, offshore facilities, and acidic processing systems. At Bosega, we ensure that all our 904L welded tubing meets international quality standards, providing precise dimensions, clean welds, and consistent mechanical performance.
Stainless steel 904L welded tubing contains 20-23% chromium, 25-28% nickel, 4-5% molybdenum and 1.5% copper for exceptional resistance to corrosion, especially in acidic and high chloride environments. With this 520 MPa tensile strength of 240 MPa Also for yield strength, high formability and weldability. The addition of copper increases its resistance to pitting and crevice corrosion. Ideal for the chemical, petrochemical and marine industries. 904L tubing provides excellent protection in harsh environments ensuring long-term performance and reliability.
| Specifications | ASTM B673, B677 / ASME SB673, SB 677 |
|---|---|
| Dimensions | ASTM, ASME and API |
| SS 904L Pipes | 1/2″ NB – 16″ NB |
| ERW 904L Pipes | 1/2″ NB – 24″ NB |
| EFW 904L Pipes | 6″ NB – 100″ NB |
| Size | 1/8″NB TO 30″NB IN |
| Specialized in | Large Diameter Size |
| Schedule | SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
| Type | Seamless / ERW / Welded / Fabricated / LSAW Pipes |
| Form | Round, Square, Rectangular, Hydraulic Etc |
| Length | Single Random, Double Random & Cut Length. |
| End | Plain End, Beveled End, Treaded |
| Grade | C | Mn | Si | P | S | Cr | MO | Ni | CU | |
|---|---|---|---|---|---|---|---|---|---|---|
| 904L | Min | – | – | – | – | – | 19.0 | 4.00 | 23.00 | 1.00 |
| max | 0.20 | 2.00 | 1.00 | 0.045 | 0.035 | 23.0 | 5.00 | 28.00 | 2.00 |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) | Brinell (HB) | ||||
|---|---|---|---|---|---|
| 904L | 490 | 220 | 35 | 70-90 typical | – |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
**Stainless Steel 904L** is a low-carbon, high-alloy austenitic stainless steel that’s enriched with chromium, nickel, molybdenum, and copper. These elements give it remarkable resistance to harsh chemicals like sulfuric, phosphoric, and acetic acids, along with excellent performance in chloride-rich settings. The welded tubing is made by rolling stainless steel strips into a tube shape and fusing the seam using advanced welding techniques, followed by proper heat treatment to restore corrosion resistance in the weld zone. This method allows for the efficient fabrication of longer lengths and larger diameters while keeping material costs down.
Bosega Pipes and Tubes is the largest supplier of Stainless Steel 904L Welded Tubing in Cape Town, South Africa. Known for its high-quality products. We offer superior corrosion resistance, strength, and durability. Trusted by industries worldwide they provide reliable precision-engineered tubing for various applications and project needs.
| STANDARD | WERKSTOFF NR. | UNS | JIS | AFNOR | BS | KS | EN |
|---|---|---|---|---|---|---|---|
| SS 904L | 1.4539 | N08904 | SUS 890L | Z2 NCDU 25-20 | 904S13 | STS 317J5L | X1NiCrMoCu25-20-5 |
You’ll find 904L welded tubing commonly used in **chemical processing**, **oil and gas systems**, **desalination plants**, **air pollution control**, and **pharmaceutical industries**, where long-lasting resistance to corrosion, heat, and contamination is crucial. It’s also perfect for **heat exchangers**, **pressure vessels**, and **fluid transport systems** in demanding environments. With its smooth surface finish, strong weld integrity, and durability, this tubing is a reliable choice for high-performance applications where dependability and longevity are key.
| Grade | Density (kg/m3) | Elastic Modulus (GPa) | Mean Co-eff of Thermal Expansion (µm/m/°C) | Thermal Conductivity (W/m.K) | Specific Heat 0-100°C (J/kg.K) | Elec Resistivity (nΩ.m) | |||
| 0-100°C | 0-315°C | 0-538°C | At 20°C | At 500°C | |||||
|---|---|---|---|---|---|---|---|---|---|
| 904L | 8000 | 200 | 15 | – | – | 13 | – | 500 | |
Stainless steel 904L welded tubing is widely used in applications requiring exceptional corrosion resistance in turbulent environments. It is commonly used in the pharmaceutical industry where highly volatile liquids such as acids and chlorides are used. In the petrochemical industry it is used in reactors, heat exchangers and pipelines. Furthermore its resistance to pitting and crevice corrosion makes it ideal for marine resources and desalination plants. Stainless steel 904L welded tubing is also used in the pharmaceutical, food processing and water treatment industries to ensure durability under extreme conditions.
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