904L Stainless Steel Mesh

Key Features:

Excels in aggressive environments
Outperforms standard 316L stainless steel in acidic and saline conditions
Superior resistance to stress corrosion cracking and localized corrosion
Wide range of available specifications

Technical Data Mesh Specification Charts

Product Description:

904L stainless steel mesh is a high-performance woven or welded mesh made from 904L stainless steel, a superaustenitic alloy known for its exceptional corrosion resistance, especially in harsh environments. Here’s a detailed breakdown:

Key Features of 904L Stainless Steel Mesh:

Material Composition:

– High Nickel (23-28%) and Chromium (19-23%) content for superior corrosion resistance.

– 4-5% Molybdenum enhances resistance to pitting and crevice corrosion.

– Low Carbon (≤0.02%) minimizes carbide precipitation during welding.

– Added Copper (1-2%) improves resistance to sulfuric acid.

Corrosion Resistance:

– Excels in aggressive environments (e.g., sulfuric acid, phosphoric acid, seawater, chlorides).

– Outperforms standard 316L stainless steel in acidic and saline conditions.

Applications:

– Chemical Processing: Filters, screens, and containment in acid handling.

– Marine & Offshore: Saltwater filtration, splash zone components.

– Pharmaceutical: Equipment requiring high purity and resistance to corrosive sterilants.

– Pollution Control: Scrubbers and exhaust systems in harsh industrial settings.

Mesh Specifications:

– Weave Types: Plain weave, twill weave, or welded mesh.

– Mesh Sizes: Ranges from fine (e.g., 100 mesh for filtration) to coarse (e.g., 10 mesh for structural screens).

– Wire Diameter: Varies based on mesh count (thicker wires for heavy-duty use).

Advantages Over 316L/304 Mesh:

– Superior resistance to stress corrosion cracking and localized corrosion.

– Better performance in reducing acids (e.g., sulfuric, phosphoric) due to copper content.

Limitations:

– Higher cost due to nickel/molybdenum content.

– Requires specialized welding techniques (e.g., TIG welding with matching filler metals).

Common Uses in Industry:

– Filtration Systems: For corrosive fluids or high-purity gases.

– Heat Exchangers: In seawater cooling applications.

– Architectural Screens: Where aesthetic durability in coastal areas is needed.

Equivalent Grades:

– UNS N08904 (ASTM/ASME)

– EN 1.4539 (European Standard)

– Similar to AL-904L®, but verify exact specs for critical applications.

If you need this mesh, ensure the supplier certifies it to ASTM A240 (904L) or equivalent standards for material integrity.