When an engineering project requires 316L stainless steel 0.005 mm foil, the sourcing process is rarely straightforward. Standard suppliers often batch thick gauges, leaving you to search for a source that understands thin-gauge handling, flatness control, and the specific tolerances your application demands. This guide is written for engineers and procurement professionals who need to issue a small-batch RFQ for 316L stainless steel foil at 0.005 mm nominal thickness. It covers the material properties, processing considerations, and documentation you will need to specify clearly in your request for quotation.
Material Snapshot
The table below summarizes the key parameters for 316L stainless steel foil at 0.005 mm. Note that exact availability of thickness, temper, and surface finish depends on project requirements and should be confirmed during the RFQ process.
| Material | Typical Form | Typical Thickness Discussion | Key Properties | Common Applications | Documents Often Requested |
|---|---|---|---|---|---|
| 316L Stainless Steel | Coil, slit coil, sheet, or cut-to-size foil | 0.005 mm (5 µm) nominal. Achievable range depends on mill source and processing. Tighter tolerance may require secondary gauging. | Low carbon (L-grade) for improved weldability and corrosion resistance; excellent formability; non-magnetic in annealed condition; good fatigue strength at thin gauges. | Fine metal masks, shadow masks, micro perforated filters, precision shims, battery current collector tabs, EMI shielding gaskets, medical R&D components. | Mill test certificate (MTC), material test report (MTR), certificate of analysis (CoA), RoHS declaration, REACH compliance statement. |
Engineering Selection Notes
Specifying 316L foil at 0.005 mm requires attention to several engineering parameters beyond the base material grade.
Thickness Tolerance and Measurement
At 0.005 mm, thickness variation of even a few microns can significantly affect electrical resistance, mechanical stiffness, and optical transmission. Specify the acceptable tolerance range (e.g., ±0.001 mm or ±0.002 mm) and the measurement method (contact micrometer, laser profilometry, or weight-based average).
Flatness and Surface Finish
Thin foil is susceptible to edge waves, center buckles, and coil set. For applications requiring high planarity (e.g., photomask blanks or precision shims), specify an acceptable flatness deviation per unit length. Surface finish (Ra or Rz) should be defined if the foil will undergo subsequent laser processing or adhesive bonding. Standard 2B or BA finishes may be available, but confirm with the supplier.
Temper and Mechanical Properties
316L foil is typically supplied in annealed (soft) or quarter-hard to full-hard tempers. Annealed foil offers maximum ductility for forming or etching, while harder tempers provide better dimensional stability during laser cutting. Specify the required tensile strength, yield strength, and elongation if these affect your downstream process.
Burr Sensitivity
If your application involves laser-cut edges, burr height and direction (top vs. bottom) can be critical. For fine metal masks or micro aperture arrays, specify the maximum acceptable burr height and whether deburring is required. Laser processing parameters can be adjusted to minimize burr, but feasibility depends on material, thickness, geometry, drawing quality and inspection requirements.
Processing Notes
Foil at 0.005 mm thickness is suitable for several precision laser micromachining techniques. The choice of process depends on feature geometry, edge quality requirements, and production volume.
Femtosecond Laser Processing
Femtosecond laser pulses offer extremely short interaction times, resulting in low thermal impact and reduced heat-affected zone. This method is ideal for cutting fine slots, drilling micro holes, and creating complex contours in 316L foil without significant recast layer or microcracking. The process is well suited for small-batch R&D and prototype runs.
Picosecond Laser Cutting
Picosecond laser cutting provides a balance between processing speed and thermal control. It can produce clean edges with minimal burr, making it suitable for applications such as shadow masks and precision shims. Again, feasibility depends on material, thickness, geometry, drawing quality and inspection requirements.
Precision Laser Cutting and Micro Hole Drilling
For larger production batches or less stringent edge quality demands, conventional laser cutting (nanosecond pulse) can be used. Micro hole drilling (down to 10–20 µm diameter) is possible with appropriate beam delivery and gas assist. Always submit a detailed drawing for a project-specific evaluation.
Application Scenarios
The following are concrete use cases where 316L stainless steel foil at 0.005 mm is specified:
- Fine Metal Mask (FMM) for OLED deposition: Requires high dimensional stability, low thermal expansion, and precise aperture geometry. 316L is a common choice for FMM manufacturing.
- Shadow Mask for vacuum deposition: Used in thin-film coating processes where pattern definition must be maintained at elevated temperatures.
- SMT Stencil for solder paste printing: Ultra-thin stencils (0.005 mm) are used for fine-pitch components in advanced electronics assembly.
- Micro Perforated Filter for gas or liquid filtration: Laser-drilled holes in 316L foil provide precise pore size distribution for medical or analytical instrumentation.
- Precision Shim for gap adjustment: Corrosion-resistant, non-magnetic shims for aerospace, medical device, or optical alignment applications.
- Battery Current Collector Tab: 316L offers good electrical conductivity and corrosion resistance in lithium-ion cell environments.
- EMI Shielding Gasket: Thin foil can be laser-cut into complex gasket shapes for electronic enclosures.
- Medical R&D Component: Prototype stents, catheter braid, or sensor substrates requiring biocompatible material at thin gauge.
- Scientific Instrument Part: Aperture masks, collimator slits, or beam filters for spectroscopy or particle analysis.
RFQ / Drawing / Document Checklist
To ensure an accurate and timely quotation for your 316L stainless steel 0.005 mm small-batch RFQ, prepare the following items:
| Item | Details to Include |
|---|---|
| Material Grade | 316L (UNS S31603) or equivalent. Specify if alternative grades (e.g., 304L, 316Ti) are acceptable. |
| Thickness | Nominal 0.005 mm with tolerance band (e.g., ±0.001 mm). |
| Drawing File | DXF, DWG, or PDF with all dimensions, tolerances, and critical features clearly annotated. Include hole/slot sizes and positions. |
| Part Size | Overall dimensions (length × width) and whether parts are nested or single. |
| Quantity | Number of parts or total linear meters of foil required. |
| Surface Requirement | Specify Ra/Rz, directionality, and any cleanliness level (e.g., free of oil, oxide, or particles). |
| Tolerance Target | For thickness, flatness, hole diameter, slot width, and edge condition. |
| Inspection Requirement | Will parts be inspected by optical microscopy, profilometry, coordinate measuring machine (CMM), or other method? Provide acceptance criteria. |
| Requested Documents | MTC, CoA, RoHS, REACH, SDS, TDS (technical data sheet) as applicable. |
Related Resources
For further technical information on 316L stainless steel foil, including available thickness ranges and processing capabilities, refer to the dedicated material page. Additional resources include:
- Full material portfolio
- Femtosecond laser micromachining services
- Picosecond laser cutting
- Precision laser cutting
- Micro hole drilling
- Download center for technical datasheets
Submit Your RFQ
When you are ready to proceed with your small-batch RFQ, submit your drawing and specifications through the custom quote page. Include all items from the checklist above to receive a project-specific evaluation and quotation. A detailed drawing and clear inspection requirements will help us assess feasibility and provide accurate lead times.