Cutting & Forming
Cutting: Use plasma cutting, shearing, or laser cutting (preferred for thin sheet). Oxy‑fuel cutting is acceptable but leaves a rough, oxidized edge that must be ground smooth to restore corrosion resistance.
Forming: A606‑2 has good formability for thin‑gauge bending, rolling, and stamping. Use proper bend radii (typically ≥2× thickness) to avoid cracking in the bent zone.
Avoid cold working: Excessive cold forming can increase hardness and reduce toughness; limit deformation to standard fabrication practices.
Surface Preparation & Handling
Mill scale: Leave the original mill scale intact during fabrication if possible-it aids initial patina formation. Remove only loose scale.
Contamination control: Prevent contact with copper, lead, or dissimilar metals that can cause galvanic corrosion. Use non‑ferrous tools where possible.
Storage: Store fabricated parts in a dry, well‑ventilated area. Avoid prolonged contact with soil, concrete, or moisture before installation.
Installation & Design for Weathering
Drainage: Design all joints, bases, and connections to shed water-no standing water on or around the steel.
Galvanic isolation: Separate A606‑2 from stainless steel, aluminum, or galvanized steel with non‑conductive gaskets (neoprene, EPDM) to prevent galvanic corrosion.
Backing & supports: Use weathering‑steel or coated steel supports; avoid direct contact with untreated wood or concrete (which can leach moisture and chemicals).
Patina Development (Landscape‑Specific)
After fabrication and installation, allow natural weathering (6–12 months) to form a uniform, stable patina.
Do not apply oils, waxes, or clear coats unless specified-they interfere with patina formation and can cause uneven discoloration.
For landscape structures, minimize surface irregularities (e.g., weld bumps, deep scratches) that can trap moisture and cause spot corrosion.
