Key Specifications of 325 mesh stainless steel mesh gauze:

• Mesh Count: 325 openings per linear inch.

• Mesh Opening: The space between the wires is very small, typically around 44 microns (0.0017 inches or 44 μm). This is often used as a benchmark for fine particle filtration.

• Wire Diameter: The individual wires used in this mesh are very thin, usually around 0.0014 inches (36 μm). A thinner wire allows for more open area.

• Open Area: The percentage of the total area that is open space for flow. For 325 mesh, this is typically around 30%, which is relatively low due to the high number of fine wires.

• Material: Almost always made from Stainless Steel 304 or 316.

  • SS 304 (AISI 304): The most common grade, offering excellent corrosion resistance for general purposes.

  • SS 316 (AISI 316): Superior corrosion resistance, especially against chlorides and acids. Preferred for marine, chemical, and high-purity applications.

• Excellent Filtration Precision: Capable of filtering out particles as small as 44 microns.

• High Strength & Durability: Stainless steel construction provides excellent tensile strength and resistance to abrasion, outperforming synthetic meshes in harsh environments.

• Heat Resistance: Can withstand very high temperatures without melting or degrading, making it ideal for burner gauze and high-temperature processes.

• Corrosion Resistance: Stainless steel offers good resistance to rust and a wide range of chemicals.

• Reusable and Easy to Clean: Can be backflushed, ultrasonically cleaned, or chemically cleaned for repeated use.

• Rigid and Stable Structure: Holds its shape well under pressure and flow, unlike many fabric filters.

Due to its fine pore size, 325 mesh gauze is used in applications requiring the separation or retention of very fine particles.

1. Filtration & Screening:

   • High-Precision Liquid Filtration: Filtering resins, varnishes, inks, dyes, and coatings to remove minute contaminants.

   • Fuel and Oil Filtration: In aerospace and high-performance automotive industries.

   • Chemical Processing: Filtering aggressive chemicals and acids (especially when using SS 316).

   • Water Jet Cutting: Used as a final screen in the waterjet’s filter system to protect the orifice from tiny debris.

2. Sifting & Particle Classification:

   • Powder Coating: Sifting powder to ensure a perfectly smooth, clog-free application.

   • Pharmaceuticals: Sifting and classifying active pharmaceutical ingredients (APIs) and excipients.

   • Food & Beverage: Sifting fine powders like flour, spices, and food additives.

3. Support & Reinforcement:

   • Laboratory Use: As a gauze mat for supporting glassware on a tripod over a Bunsen burner. It helps to diffuse heat evenly.

   • Composite Materials: Used as a reinforcing scrim in fiberglass or other composite materials.

4. Electronics:

   • EMI/RFI Shielding: The dense weave can provide effective electromagnetic and radio frequency interference shielding for sensitive electronic enclosures.