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AISI 304L Stainless Steel Coil
Available Configurations
Properties common to all products in this list
Key Features
AISI 304L Stainless Steel Coil (UNS S30403) is a low-carbon variant of the 18% chromium-8-10% nickel austenitic alloy system, with carbon restricted to 0.03 wt% maximum to minimize carbide precipitation at grain boundaries during and after welding:
Low Carbon Content Minimizes Weld-Zone Carbide Precipitation
Carbon restricted to 0.03 wt% maximum minimizes carbide precipitation at grain boundaries during and after welding, a single modification that preserves intergranular corrosion resistance in the heat-affected zone of welded assemblies.
Preferred Choice for Welded Construction
304L is the preferred choice over standard 304 wherever the component will be welded or exposed to temperatures in the sensitization range of 425-850 °C, eliminating the risk of weld-zone corrosion degradation.
Preserved Corrosion Resistance Following Welding
Intergranular corrosion resistance is preserved in the heat-affected zone of welded assemblies, ensuring that fabrication by welding does not compromise the long-term corrosion performance of the finished component.
Coil Format Supports Large-Scale Continuous Fabrication
The coil format supports large-scale continuous fabrication of welded and formed components in food processing, marine engineering, chemical equipment, and architectural applications.
Full 18-8 Alloy System Properties Retained
Beyond the carbon restriction, AISI 304L retains the full mechanical strength, formability, and general corrosion resistance of the 18% chromium-8-10% nickel alloy system.
Industrial Applications
AISI 304L Stainless Steel Coil is used across food processing, marine engineering, chemical equipment, and architectural sectors wherever the component requires welding or thermal processing in the sensitization range:
- ✦ Welded Components in Food Processing
- Used in welded components for food processing, where the low-carbon composition preserves intergranular corrosion resistance in the heat-affected zone, ensuring weld integrity does not compromise hygienic performance.
- ✦ Marine Engineering Fabrication
- Applied in marine engineering fabrication, where preserved corrosion resistance following welding supports reliable long-term performance in welded marine structures exposed to corrosive conditions.
- ✦ Chemical Equipment
- Used in chemical equipment, where the preferred choice of 304L over standard 304 for welded construction ensures the heat-affected zone retains full intergranular corrosion resistance.
- ✦ Architectural Applications
- Formed into architectural applications, where large-scale continuous fabrication of welded and formed components benefits from the coil format's consistency and the alloy's weld-friendly low-carbon composition.
- ✦ Cold-Working & Cryogenic Treatment Research
- Used in cold-working effect studies, cryogenic treatment investigations, and surface passivation research targeting improved pitting resistance in chloride-bearing environments.
Material Properties
| Element | Value |
|---|---|
| Elongation at break( % ) | 58 |
| Tensile strength( MPa ) | 565 |
| Element | Value |
|---|---|
| Electrical resistivity( µOhmcm ) | 72 |
| Temperature coefficient( K⁻¹ ) | - |
| Element | Value |
|---|---|
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 16.2@23°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 17.3@23°C |
Tolerances
| Thickness | <0.01mm | ±25% |
|---|---|---|
| Thickness | 0.01mm - 0.05mm | ±15% |
| Thickness | >0.05mm | ±10% |
| Coil Width | <100mm | ±1mm |
| Coil Width | >=100mm | +2% / -1% |
| Length | +10% / -0% |