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AISI 304L Stainless Steel Foil/Sheet
Available Configurations
Properties common to all products in this list
Key Features
AISI 304L Stainless Steel Foil (UNS S30403) is a low-carbon austenitic stainless steel foil with carbon content restricted to 0.03 wt% maximum, preserving intergranular corrosion resistance following welding or thermal processing in the sensitization range:
Preserves Intergranular Corrosion Resistance After Welding
Carbon content restricted to 0.03 wt% maximum preserves intergranular corrosion resistance following welding or thermal processing in the sensitization range, ensuring weld integrity does not compromise long-term performance.
Reliable Performance from Cryogenic to 870 °C
AISI 304L Foil combines the formability, corrosion resistance, and surface finish of the 18% chromium-8-10% nickel system with reliable performance from cryogenic temperatures through to approximately 870 °C continuous service.
Preferred Grade Wherever Welding or Thermal Cycling is Involved
The reduced carbon content makes AISI 304L the preferred foil grade wherever welding, brazing, or thermal cycling is part of the fabrication or service history of the finished component.
Suited to Precision-Formed Medical & Aerospace Components
Precision-formed medical instruments and aerospace insulation components benefit from the combination of formability, corrosion resistance, and reliable post-weld performance characteristic of AISI 304L Foil.
Well-Defined Low-Carbon Composition for Research
AISI 304L Foil is used in surface passivation studies, cryogenic material investigations, and electrochemical characterization where a well-defined low-carbon composition is required for reproducible results.
Industrial Applications
AISI 304L Stainless Steel Foil is used across medical, aerospace, chemical, and hygienic processing sectors wherever welding, brazing, or thermal cycling is part of the fabrication or service history:
- ✦ Precision-Formed Medical Instruments
- Used in precision-formed medical instruments, where the reduced carbon content preserves intergranular corrosion resistance following the welding or thermal processing steps common in medical device fabrication.
- ✦ Aerospace Insulation Components
- Formed into aerospace insulation components, where reliable performance from cryogenic temperatures through to approximately 870 °C continuous service suits the demanding thermal range of aerospace applications.
- ✦ Chemical Plant Linings
- Used in chemical plant linings, where preserved intergranular corrosion resistance following thermal processing ensures long-term performance in welded chemical containment structures.
- ✦ Formed Parts in Hygienic Processing Environments
- Applied in formed parts for hygienic processing environments, where the preferred foil grade status of 304L for welded or thermally cycled fabrication ensures reliable corrosion performance after assembly.
- ✦ Surface Passivation & Cryogenic Material Research
- Used in surface passivation studies, cryogenic material investigations, and electrochemical characterization where a well-defined low-carbon composition is required for reproducible experimental results.
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% |
| Linear dimension | <100mm | ±1mm |
| Linear dimension | >=100mm | +2 / -1% |