Materials & Finishes
Material and surface finish options for perforated metal, expanded metal, and bar grating.
Perforated Metal
Expanded Metal
Bar Grating
Material specifications & treatments
Standard materials and protective finishes
Select the right metal alloy and surface treatment for your load requirements, environmental exposures, and architectural specifications.
Base metal
Carbon steel
ASTM A36
General-purpose structural material offering dependable load capacity and straightforward fabrication at an economical cost.
Key attribute:High strength-to-cost ratio
Base metal
Stainless steel
ASTM A240 (304 / 316)
Chromium-nickel alloy providing exceptional resistance to corrosion, pitting, and harsh chemical exposures in industrial and architectural settings.
Key attribute:Superior oxidation resistance
Base metal
Aluminum
ASTM B209
Lightweight and naturally corrosion-resistant alloy, suited for architectural facades, walkways, and weight-sensitive installations.
Key attribute:One-third the weight of steel
Pre-treated metal
Galvanized steel
Mill galvanized
Zinc-coated carbon steel that provides reliable sacrificial barrier protection for standard outdoor and high-humidity applications.
Key attribute:Uniform protective zinc layer
Surface finish
Powder coating
Electrostatic finish
Electrostatic dry powder cured under heat to form a hard, durable layer available in a wide spectrum of RAL colors for aesthetic and weathering needs.
Key attribute:Impact and UV resistance
In-house finish
Hot-dip galvanizing
ASTM A123
Total molten zinc immersion delivering thick metallurgical bonding for heavy corrosion protection, processed through our in-house galvanizing facility.
Key attribute:Multi-decade exterior protection
Need custom alloy grading or specialty testing certificates?
Our engineering team provides material test reports (MTR) and custom gauge tolerances upon request.