15*15*1mm Aluminum Alloy Corner Molding

Key Advantages

• Structural dimensions: 15mm × 15mm equal legs, 1mm wall thickness. Higher moment of inertia compared to smaller profiles, improving bending resistance.
• Environmental tolerance: Neutral salt spray test (NSS) ≥120 hours without pitting. Suitable for semi-outdoor environments such as balconies, corridors, and ground-floor entrances.
• Fade resistance: Anodized layer thickness ≥8μm, or optional polyester powder coating (color difference ΔE ≤2 after 500 hours QUV testing).
• Fabrication and installation: Cuttable on-site with clean edges. Compatible with construction adhesives, brad nails, or self-tapping screws.
• Dimensional consistency: Straightness deviation ≤1 mm/m, angle tolerance ±0.5°, Batch-to-batch conformance to GB/T 5237 standards.

Product Specifications

Application Scenarios

• Interior and exterior wall corner protection (residential corridors, hospitals, schools, office buildings)
• Stair nosing and stair edge wrapping
• Door and window casing edge finishing and impact protection
• Right-angle seam finishing for integrated wall panels (bamboo fiber, stone-plastic composite)
• Exposed edge decoration for display cases and booths in commercial spaces
• Light industrial workshop wall corner impact protection

Frequently Asked Questions and Precautions

Q: Will thermal expansion cause adhesive failure in outdoor installations?
A: The linear expansion coefficient of aluminum is approximately 23×10⁻⁶/℃. For a 3m length with a 40℃ temperature variation, expansion/contraction reaches approximately 2.8mm. Provision for expansion gaps or stress-relief slots on the back side is recommended. Continuous rigid fixing is not advised for single lengths exceeding 2.5M.

Q: How to repair a scratched anodized layer?
A: Light scratches can be lightly sanded along the grain using 3000-grit sandpaper and wiped clean. Deep scratches require factory re-anodizing or recoating. On-site repair results are limited.

Q: Can this profile be installed directly over old ceramic tile corners?
A: Yes, provided the tile corner has no significant hollowing and the corner angle deviation ≤2mm. Use high-strength structural adhesive (e.G., Epoxy AB adhesive) and secure with painter‘s tape for 24 hours.

Precautions

• For outdoor installations, leave drainage holes at the bottom or keep ends unsealed to prevent water accumulation.
• Deburr cut ends with 200-grit or finer sandpaper to avoid scratching hands or adjacent surfaces during installation.
• Avoid direct contact with wet cement mortar (alkaline substances may corrode the anodized layer). Allow mortar to dry completely (pH ≤9) before installation.
• Store horizontally on dry wooden supports. Avoid mixing storage with acidic or alkaline chemicals. Stack height ≤1.5M to prevent deformation of lower profiles.