Aluminum 90° Corner Braces for Curtain Wall & Light Framing

Product Description

Lightweight, Corrosion-Free, Aesthetically Matched

When the entire curtain wall framing is aluminum, introducing a steel connector creates two problems: galvanic corrosion risk and aesthetic mismatch. Aluminum 90° corner braces solve both. They match the framing material, eliminate bimetallic contact, and weigh roughly one-third of an equivalent steel bracket — reducing dead load on the structure.

Fabao Machinery supplies extruded aluminum 90° corner braces in 6063-T5 for standard applications and 6061-T6 where higher tensile strength is required. Every bracket is cut, deburred, drilled, and anodized under one quality system, ensuring your installers open the box and bolt them straight on.

Aluminum vs. Steel: Which 90° Bracket Do You Need?

Dimensional Reference & Profile Drawing

Standard Equal-Leg Extruded Profile

       ├───────── L ─────────┤
       │                     │
       │    ○   ○   ○        │  ← Pre-drilled holes
       │                     │
       │                     │  ← Leg width: W (typically 30–50mm)
       │                     │
   ────┘                     └────
       │                     │
       │    ○   ○   ○        │
       │                     │
       ├───────── L ─────────┤
       │← W →│

Standard Size Matrix

Reinforced rib option available for leg lengths ≥ 150mm. Custom hole positions, slot lengths, and leg widths produced to your drawing.

Surface Finish Options

Applications

• Unitized Curtain Wall Transom Connections – Connecting horizontal transoms to vertical mullions in factory-assembled unitized panels.

• Stick-Built Aluminum Framing – On-site corner reinforcement for aluminum grid systems on mid-rise buildings.

• Window & Door Subframes – Fixing aluminum subframes into prepared openings within curtain wall bays.

• Solar Panel Mounting Rails – Right-angle connectors between aluminum rails and posts in PV racking systems.

• Decorative Architectural Screens – Lightweight brackets for aluminum louver and trellis assemblies.

Frequently Asked Questions

1. What is the difference between 6063-T5 and 6061-T6 for angle brackets?
6063-T5 offers excellent extrudability and surface finish — ideal for standard curtain wall brackets with good corrosion resistance. 6061-T6 provides higher tensile strength (approx. 310 MPa vs 185 MPa) and is recommended for brackets carrying heavier loads or where a higher safety factor is required.

2. Can I get anodizing in a specific color?
Clear (silver), black, and bronze are standard. Custom anodized colors or powder coating to any RAL number are available on request for larger production runs.

3. Will aluminum brackets corrode when in contact with stainless steel bolts?
Aluminum in contact with stainless steel can experience galvanic corrosion in the presence of an electrolyte (rainwater, condensation). We recommend using isolating washers or nylon bushings. We can supply suitable fasteners as an add-on if needed.

4. Do you provide test certificates for mechanical properties?
Yes. Material certificates (mill test reports) for 6063-T5 or 6061-T6 are available upon request. Additional mechanical testing (tensile, hardness) can be arranged for project-specific requirements.

5. What if I need a profile shape that is not standard?
We can develop custom extrusion dies for non-standard leg widths, reinforced rib profiles, or integrated stiffening features. Lead time for new die development is typically 15–20 days.

Why Fabao for Aluminum Angle Brackets?

• Extrusion to Finished Part – Sawing, drilling, deburring, and anodizing all managed under one roof.

• Anodizing Consistency – Batch-controlled anodizing tanks produce uniform color and coating thickness (10–15μm).

• Custom Profiles Without High MOQ – Modest production runs accepted for custom leg dimensions.

• Compatibility Package – Can supply matching stainless steel bolts and isolating washers to simplify procurement.

• Padded Export Packaging – Each bracket individually separated to prevent surface scratches during transit.