304 / 304L Stainless Steel Coil
Stellanox Steel supplies premium-quality 304 / 304L Stainless Steel Coils, known for their outstanding corrosion resistance, formability, and clean surface finish. These coils are widely used in industries like food processing, pharmaceuticals, architecture, automotive, and general engineering due to their hygienic properties and ease of fabrication.
Available in both hot-rolled and cold-rolled forms, 304 / 304L coils offer excellent weldability, strength, and aesthetic appeal—making them one of the most popular stainless steel materials globally.
What is 304 / 304L Stainless Steel Coil?
304 Stainless Steel Coil is an austenitic chromium-nickel alloy that offers excellent corrosion resistance, strength, and ease of fabrication. 304L, the low-carbon variant, is particularly resistant to intergranular corrosion following welding or stress relieving. Both grades provide a balance of cost-efficiency, mechanical properties, and surface versatility.
These coils are typically supplied in annealed condition and are available in a range of finishes including 2B, No.4, and mirror polish.
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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 Coil
- Excellent Corrosion Resistance: Withstands oxidation, moisture, and mild chemicals.
- Low Carbon Version (304L): Minimizes risk of intergranular corrosion after welding.
- Superior Surface Finish: Available in polished, brushed, and matte finishes.
- Formable & Fabrication-Friendly: Ideal for bending, punching, stamping, and rolling.
- Hygienic & Easy to Clean: Widely used in food-grade and medical applications.
- Versatile & Cost-Effective: One of the most widely used stainless steel grades.
Specification Chart – 304 / 304L Stainless Steel Coil
| Property | Details |
|---|---|
| Grades | 304 / 304L (UNS S30400 / S30403) |
| Standards | ASTM A240 / A480, JIS G4305, EN 10088-2 |
| Coil Width | 10 mm – 2000 mm (custom slit widths available) |
| Thickness Range | 0.3 mm – 6 mm |
| Coil ID / OD | 508 mm / 610 mm ID, OD as per customer requirements |
| Surface Finishes | 2B, BA, No.4, No.8 (Mirror), HL, SB |
| Processing Options | Slitting, Cut-to-Length, Polishing, PVC Coating |
| Edge Condition | Mill Edge, Slit Edge |
Chemical Composition – 304 vs. 304L Stainless Steel Coil
| 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 | ≤ 2.0 | ≤ 2.0 |
| Silicon | ≤ 0.75 | ≤ 0.75 |
| Phosphorus | ≤ 0.045 | ≤ 0.045 |
| Sulfur | ≤ 0.030 | ≤ 0.030 |
| Iron | Balance | Balance |
Mechanical Properties – 304 / 304L Stainless Steel Coil
| Property | 304 | 304L |
|---|---|---|
| Tensile Strength (MPa) | ≥ 515 | ≥ 485 |
| Yield Strength (MPa) | ≥ 205 | ≥ 170 |
| Elongation (%) | ≥ 40 | ≥ 40 |
| Hardness (HRB) | ≤ 90 | ≤ 90 |
| 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 Pipe Weight Chart
| Thickness (mm) | Weight (kg/m²) |
|---|---|
| 0.3 | 2.40 |
| 0.5 | 4.00 |
| 0.8 | 6.40 |
| 1.0 | 8.00 |
| 1.5 | 12.00 |
| 2.0 | 16.00 |
| 3.0 | 24.00 |
| 4.0 | 32.00 |
| 5.0 | 40.00 |
| 6.0 | 48.00 |
Applications of 304 / 304L Stainless Steel Coil
- Food & Beverage Processing Equipment
- Kitchen Appliances and Sink Manufacturing
- Architectural Roofing and Cladding
- Heat Exchanger and Condenser Components
- Chemical & Pharmaceutical Containers
- Automotive Trim and Exhaust Shields
- Decorative and Sanitary Installations
Benefits of 304 / 304L Stainless Steel Coil
- Corrosion-resistant and long-lasting
- Aesthetic finish with hygienic surface
- Easily formable and fabricable
- Suitable for indoor and outdoor environments
- Readily available and economical
- Non-toxic and safe for food contact
Frequently Asked Questions
304L has lower carbon content, which enhances weldability and reduces risk of intergranular corrosion after welding.
Yes. 304/304L coils offer good resistance to rain, moisture, and atmospheric corrosion.
Absolutely. It can be finished to mirror, brushed, or satin surfaces for decorative use.
Yes, it complies with food-grade safety standards and is widely used in food contact applications.
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