304 / 304L Stainless Steel Coil
Premium-grade 304 and 304L stainless steel coils from Stellanox Steel are renowned for their exceptional formability, corrosion resistance, and smooth surface finish. Because of their sanitary qualities and simplicity of construction, these coils are widely utilised in a variety of industries, including general engineering, architecture, pharmaceuticals, food processing, and automotive.
304 / 304L coils are among the most widely used stainless steel materials worldwide because of their exceptional weldability, strength, and visual appeal. They are available in both hot-rolled and cold-rolled forms.
What is 304 / 304L Stainless Steel Coil?
The austenitic chromium-nickel alloy known as 304 stainless steel coil has exceptional strength, corrosion resistance, and ease of manufacture. The low-carbon kind, 304L, is especially resistant to intergranular corrosion after stress-relieving or welding. The mechanical qualities, surface versatility, and cost-effectiveness are all balanced in both classes.
These coils come in a variety of finishes, such as 2B, No. 4, and mirror polish, and are usually provided in annealed form.
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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
- Outstanding Resistance to Corrosion: Able to withstand mild chemicals, moisture, and oxidation.
- After welding, the Low Carbon Version (304L) reduces the chance of intergranular corrosion.
- Superior Surface Finish: Matte, brushed, and polished finishes are available.
- Fabricable and Formable -Friendly: Perfect for rolling, stamping, punching, and bending.
- Easily cleaned and hygienic: often utilised in medical and food-grade applications.
- Adaptable & Economical: Among the most popular grades of stainless steel.
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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