Editorial Technical Reference

Aluminum Profile Corner Connector

This page explains how Aluminum Profile Corner Connector is classified within Aluminum Profiles Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

The Aluminum Profile Corner Connector is a precision-machined aluminum alloy component designed to securely join two aluminum extrusion profiles at 90-degree angles in structural frameworks.

Representative product image. Confirm appearance and specifications with the manufacturer.

Product Specifications

Technical details and manufacturing context for Aluminum Profile Corner Connector

Definition
The Aluminum Profile Corner Connector is a precision-machined aluminum alloy component designed to securely join two aluminum extrusion profiles at 90-degree angles in structural frameworks. It is inserted into the profile's T-slot channels and fastened with bolts to create rigid, load-bearing joints. These connectors are essential for constructing modular aluminum framing systems used in industrial machinery, automation equipment, and material handling structures. They provide standardized, reusable connections that maintain alignment and structural integrity under various loads.

Manufactured from aluminum alloy 6063-T5, the connector features an anodized coating for corrosion resistance and durability. The included fasteners are zinc-plated steel bolts, typically sized M6 to M8, which secure the connector within the T-slots. The connector is compatible with aluminum profile series sizes ranging from 6 to 12 mm, accommodating common profiles such as the 40 series. The static load capacity per joint ranges from 500 to 1500 kg, depending on the specific model and application. The operating temperature range is -40 to 85°C, making it suitable for a variety of industrial environments.

Key technical parameters include a tensile strength of at least 160 MPa (per GB/T 5237), a surface hardness of at least 8 HW (Webster), and corrosion resistance of at least 500 hours in salt spray testing (per ISO 9227). Dimensional tolerances are ±0.1 mm (per ISO 2768-m). The connector is RoHS compliant, free of lead, mercury, and cadmium, in accordance with EU Directive 2011/65/EU. Each piece weighs between 0.05 and 0.20 kg.

These connectors are designed for use in modular framing systems where right-angle joints are required. They are suitable for applications such as machine guards, workstations, conveyor frames, and other structural assemblies. The working principle involves inserting the connector into the T-slot of one profile, aligning it with the adjacent profile, and tightening the bolts to create a rigid joint. The connector ensures proper alignment and load distribution, maintaining structural integrity under static loads.

For selection, it is essential to verify the profile series size, bolt size, and load capacity requirements for the specific application. Always confirm model-specific values and standards with the legal manufacturer or supplier, as the values provided are reference ranges. Regular inspection of the bolts and connector for wear or corrosion is recommended to ensure continued performance. Failure to maintain proper torque or using incompatible profiles may lead to joint failure or reduced load capacity.
Working Principle
The connector fits into the T-slots of adjacent aluminum profiles and is secured with bolts to create rigid right-angle joints. The T-slot design allows for easy insertion and positioning, while the bolts provide clamping force to hold the profiles firmly together. The connector's precision-machined surfaces ensure accurate alignment, and the anodized coating reduces friction and wear. The load is transferred through the connector to the profiles, distributing stress evenly across the joint. Proper torque on the bolts is critical to achieve the rated load capacity and maintain joint integrity.
Common Materials
aluminum alloy 6063-T5, zinc-plated steel bolts, anodized coating
Technical Parameters
ParameterTypical rangeNotes & selection driver
Profile CompatibilityRequired6–12 mmAluminum profile series size (e.g., 40 series)
Material GradeRequired6063-T5Aluminum alloy grade (e.g., 6063-T5)GB/T 5237
Bolt SizeRequiredM6–M8 mmThread diameter of included fastenersISO 262
Static Load CapacityRequired500–1500 kgMaximum vertical load per joint
Surface TreatmentAnodizedFinish type (e.g., anodized, powder coated)ISO 7599
Operating Temperature-40–85 °CContinuous operation
Tensile Strength≥160 MPaFor 6063-T5GB/T 5237
Surface Hardness≥8 HWWebster hardnessGB/T 5237
Corrosion Resistance≥500 hSalt spray testISO 9227
Weight0.05–0.20 kgPer piece
Tolerance±0.1 mmCritical dimensionsISO 2768-m
RoHS Compliance100 %Lead, mercury, cadmium freeEU Directive 2011/65/EU

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Aluminum Profile Corner Connector.

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Max 10 MPa static load
other spec: Corner angle tolerance: ±0.5°, Profile width range: 20-100 mm
temperature: -40°C to 150°C
Media Compatibility
✓ Aluminum extrusion profiles ✓ Structural framing systems ✓ Industrial machinery enclosures
Unsuitable: High-vibration environments with cyclic loading
Sizing Data Required
  • Profile cross-sectional dimensions
  • Required load capacity (static/dynamic)
  • Connection method (mechanical fastening/adhesive bonding)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Stress corrosion cracking
Cause: Exposure to chloride-containing environments combined with residual stresses from manufacturing or assembly, leading to crack initiation and propagation in aluminum alloy
Galvanic corrosion
Cause: Direct contact with dissimilar metals (e.g., steel fasteners) in presence of electrolyte, creating galvanic cell that preferentially corrodes the aluminum component
Maintenance Indicators
  • Visible white powdery corrosion deposits (aluminum oxide) at connector interfaces
  • Audible creaking or popping sounds during thermal cycling or load changes indicating loosening or cracking
Engineering Tips
  • Apply dielectric isolation (e.g., nylon washers, insulating coatings) between aluminum connectors and dissimilar metal fasteners to prevent galvanic corrosion
  • Implement controlled torque procedures during installation and periodic retorquing schedules to maintain proper preload while avoiding stress concentrations

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ASTM B221 - Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes EN 755-2 - Aluminum and aluminum alloys - Extruded rod/bar, tube and profiles - Part 2: Mechanical properties

Quoted from the published standard.

Manufacturing Precision
  • Bore diameter: +/-0.05mm
  • Flatness of mating surfaces: 0.1mm
Quality Inspection
  • Dimensional Verification with CMM (Coordinate Measuring Machine)
  • Hardness Testing (Brinell or Rockwell scale)

Manufacturers of Aluminum Profile Corner Connector

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

SinoExtrud (Foshan Yonghang Aluminum Co., Ltd)
Foshan, Guangdong, CN
ISO EN
Listed on the company's own website · profile compiled by CNFX from public sources

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
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Frequently Asked Questions

What aluminum profile series is this connector compatible with?

The connector is designed for aluminum profile series sizes ranging from 6 to 12 mm, such as the 40 series. Always verify the exact profile dimensions with the manufacturer to ensure compatibility.

What is the maximum load capacity of this connector?

The static load capacity per joint ranges from 500 to 1500 kg, depending on the specific model and application. Confirm the exact rating for your intended use with the supplier.

What materials are used in this connector?

The connector is made of aluminum alloy 6063-T5 with an anodized coating. The included bolts are zinc-plated steel, typically M6 to M8 in size.

What standards does this connector comply with?

The connector references standards such as GB/T 5237 for material and hardness, ISO 262 for bolt threads, ISO 7599 for anodizing, ISO 9227 for corrosion testing, and ISO 2768-m for tolerances. It is also RoHS compliant per EU Directive 2011/65/EU. These are reference standards; verify actual compliance with the manufacturer.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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