Service Details

SS 304 Black Coated Wire Mesh

SS 304 black coated wire mesh is a highly durable and versatile material, consisting of an SS 304 stainless steel base with an exterior black coating, typically epoxy powder or polyester. This combination merges the inherent strength and corrosion resistance of 304 stainless steel with the added benefits of a protective and aesthetic coating.

Stainless Steel 304 Base Material

The core of the mesh is Grade 304 stainless steel, often referred to as 18/8 stainless steel due to its typical chemical composition:

Chromium (Cr): Approximately 18-20%. This element is vital as it forms a passive oxide layer on the surface, providing the steel's exceptional natural resistance to rust and corrosion in a wide range of atmospheric and chemical environments.

Nickel (Ni): Approximately 8-10.5%. Nickel stabilizes the austenitic structure, which contributes to the steel's high strength, durability, excellent workability (formability and ease of fabrication), and temperature resistance.

Carbon (C): Max 0.08%.

Key Properties of the SS 304 Base:

Corrosion Resistance: Good resistance to most oxidizing acids and general atmospheric corrosion. It is, however, less resistant to chlorides (like saltwater) compared to Grade 316 stainless steel.

Heat Resistance: Displays good oxidation resistance, often withstanding continuous service temperatures up to approximately 1700 Deg F (927 Deg F).

Durability and Strength: Inherently strong and resistant to impact, wear, and tear, ensuring a long service life.

Black Coating (Epoxy or Polyester)

The stainless steel wire mesh is typically manufactured through weaving the SS 304 wires (or sometimes welding) and then applying a black coating, often through an epoxy powder coating process. The mesh is cleaned, electrostatically sprayed with the powder, and then cured in an oven at high temperatures.

Benefits of the Black Coating:

Enhanced Corrosion Resistance: The coating provides an extra protective layer against environmental factors, further safeguarding the underlying stainless steel, though the SS 304 is already resistant.

Aesthetic Appeal: The matte or glossy black finish is highly desirable for architectural, decorative, and screening applications, such as security screens or insect nets.

UV and Scratch Resistance: High-quality black coatings offer resistance to UV degradation and minor abrasion, maintaining their appearance and integrity over time.

Welding/Bonding: The curing process for epoxy powder coating can sometimes cause the mesh wires to weld or bond to each other at the intersections, enhancing the mesh's structural integrity and ensuring perfect hole shape even when stretched (a key feature for screen doors and windows).