304 / 304L Stainless Steel Tube
Stellanox Steel offers high-quality 304 / 304L Stainless Steel Tubes engineered for superior corrosion resistance, excellent formability, and cost-effective performance across various industries. Known for their versatility and durability, these austenitic stainless steel tubes are widely used in structural frameworks, fluid transport systems, food-grade installations, and mechanical components.
Available in seamless and welded forms, our 304/304L stainless steel tubes comply with international standards and are suitable for both decorative and critical process piping.
What is 304 / 304L Stainless Steel Tube?
304 Stainless Steel Tubes are made from an austenitic stainless steel alloy that contains approximately 18% chromium and 8% nickel, offering exceptional corrosion resistance and weldability. 304L, the low-carbon version of 304, reduces the risk of carbide precipitation during welding, making it ideal for thick-walled sections and welded fabrications.
These tubes are widely used for their smooth surface finish, hygienic properties, and ability to withstand oxidation, forming the backbone of applications in food processing, chemical transport, construction, and pharmaceuticals.
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Stainless Steel |
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Carbon Steel |
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Duplex Stainless Steel |
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Super Duplex Stainless Steel |
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Alloy Steel |
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Titanium |
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Hastelloy |
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Inconel |
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Monel |
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Aluminium |
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Copper |
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Pure Nickel |
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Flanges |
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Forged Fittings |
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Valves |
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Fasteners |
Key Features of 304 / 304L Stainless Steel Tube
- Excellent Corrosion Resistance: Performs well in most oxidizing environments.
- Low Carbon Version (304L): Minimizes risk of intergranular corrosion during welding.
- Good Formability and Machinability: Easily bent, coiled, or fabricated.
- Non-Magnetic in Annealed State: Suitable for sensitive electrical or instrumentation systems.
- Wide Range of Finishes Available: Mirror, polished, satin, and annealed finishes.
- Hygienic & Easy to Clean: Preferred for food, beverage, and pharma use.
- Cost-Effective & Readily Available: Most commonly used stainless grade globally.
Specification Chart – 304 / 304L Stainless Steel Tube
| Property | Details |
|---|---|
| Grades | 304 / 304L (UNS S30400 / S30403) |
| Standards | ASTM A269, A249, A270, A554, A213, A312 |
| Size Range (OD) | 6 mm to 219 mm (1/8" to 8" NB) |
| Wall Thickness | 0.5 mm to 10 mm |
| Length | 6 m, 12 m, U-bent, or cut-to-length |
| Tube Types | Seamless, Welded, Cold Drawn, ERW |
| Surface Finishes | 2B, BA, No.4, Mirror (No.8), Satin |
| End Types | Plain End (PE), Beveled End (BE), Threaded End |
| Certifications | EN 10204 3.1 / 3.2, NACE MR0175, ISO, PED |
Chemical Composition – 304 vs. 304L Stainless Steel Tube
| Element | 304 (%) | 304L (%) |
|---|---|---|
| Chromium | 18.0 – 20.0 | 18.0 – 20.0 |
| Nickel | 8.0 – 10.5 | 8.0 – 12.0 |
| Carbon | ≤ 0.08 | ≤ 0.03 |
| Manganese | ≤ 2.00 | ≤ 2.00 |
| Silicon | ≤ 0.75 | ≤ 0.75 |
| Phosphorus | ≤ 0.045 | ≤ 0.045 |
| Sulfur | ≤ 0.030 | ≤ 0.030 |
| Iron | Balance | Balance |
Mechanical Properties – 304 / 304L Stainless Steel Tube
| Property | 304 | 304L |
|---|---|---|
| Tensile Strength (MPa) | ≥ 515 | ≥ 485 |
| Yield Strength (MPa) | ≥ 205 | ≥ 170 |
| Elongation (%) | ≥ 40 | ≥ 40 |
| Hardness (HRB) | ≤ 90 | ≤ 90 |
| Modulus of Elasticity | 193 GPa | 193 GPa |
| Density | 8.00 g/cm³ | 8.00 g/cm³ |
Equivalent Grades
| Standard | 304 | 304L |
|---|---|---|
| ASTM | 304 | 304L |
| EN | 1.4301 | 1.4307 |
| JIS | SUS 304 | SUS 304L |
| UNS | S30400 | S30403 |
| DIN | X5CrNi18-10 | X2CrNi18-9 |
304 / 304L Stainless Steel Tube Weight Chart
| OD (mm) | Wall Thickness (mm) | Weight per Meter (kg) | Weight per 6m (kg) |
|---|---|---|---|
| 6.0 | 1.0 | 0.12 | 0.72 |
| 12.7 | 1.2 | 0.27 | 1.62 |
| 19.05 | 1.5 | 0.50 | 3.00 |
| 25.4 | 2.0 | 0.95 | 5.70 |
| 38.1 | 2.5 | 1.71 | 10.26 |
| 50.8 | 3.0 | 2.78 | 16.68 |
| 63.5 | 3.0 | 3.53 | 21.18 |
| 76.2 | 3.5 | 4.92 | 29.52 |
Applications of 304 / 304L Stainless Steel Tube
- Food & Beverage Equipment
- Dairy and Pharmaceutical Process Lines
- Decorative and Architectural Tubing
- Heat Exchangers and Condensers
- Marine and Coastal Piping
- General Engineering and Fabrication
- Structural and Mechanical Tubes
- Automotive and Instrumentation Tubes
Benefits of 304 / 304L Stainless Steel Tube
- Excellent corrosion and oxidation resistance
- Low maintenance and long-lasting performance
- Smooth, sanitary finish ideal for clean applications
- Strong and ductile for bending and shaping
- Cost-effective choice with wide availability
- Fully recyclable and environmentally sustainable
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