Aluminum C-channels — also referred to as U-profiles or aluminum channel sections — are essential structural and finishing profiles used across construction, mechanical engineering, electrical installations and interior fit-out. ULAMEX stocks a comprehensive range of aluminum channel sections extruded from PA38 (EN AW-6060 T6) alloy in standard lengths of 6,000 mm, available for immediate dispatch throughout Europe. Our C-channel inventory spans from compact 8×8 mm trim profiles to heavy-duty 100×50 mm structural channels, covering the full spectrum of applications from LED strip housing to cable management to load-bearing framing. As your trusted aluminum extrusion supplier in Europe, ULAMEX offers wholesale channel stock from our warehouse with cut-to-size service and complete material documentation.
Material Properties & Technical Specifications
All aluminum C-channels are manufactured from EN AW-6060 T6 (material number 3.3206, chemical composition AlMgSi), the predominant extrusion alloy for aluminium sections in the European market. The T6 condition is achieved through solution heat treatment and artificial aging, providing an ideal combination of formability during extrusion and mechanical strength in the finished profile.
Mechanical properties (EN AW-6060 T6, wall thickness ≤ 5 mm):
- Tensile strength (Rm): 190–220 MPa
- Yield strength (Rp0.2): ≥ 150 MPa
- Elongation at break (A%): ≥ 8%
- Brinell hardness (HB): 70–75
Physical properties:
- Density: 2.70 g/cm³ (66% lighter than steel at 7.85 g/cm³)
- Thermal conductivity: 200–220 W/(m·K)
- Electrical conductivity: 34–38 m/(Ω·mm²)
- Elastic modulus: 69.5 GPa
EN AW-6060 T6 delivers excellent atmospheric and seawater corrosion resistance, good weldability (TIG/MIG with 4043 or 5356 filler) and very good machinability. The EN AW-6060 T6 specifications meet the requirements of EN 755-1/2 and EN 573-3.
Dimensions & Available Sizes
ULAMEX carries aluminum C-channels in a comprehensive range of sizes from 8×8 mm to 100×50 mm. Popular sizes include 10x10x1.5, 12x12x2, 15x10x1.5, 20x10x2, 20x20x2, 25x15x2, 30x15x2, 30x20x3, 40x20x2, 50x25x3, 60x30x3, 80x40x4 and 100x50x5 mm. Wall thicknesses range from 1.0 to 7.0 mm, enabling selection from lightweight trim channels to structurally rated sections. All C-channels are supplied in the standard length of 6,000 mm. Aluminum cut to size is available — include your required lengths and quantities when requesting a quote. For the complete dimension matrix, see the product specification table on this page.
Applications by Industry
Construction & Architecture: Aluminum U-profiles are widely used in construction for glazing retention — holding glass panels in place in partitions, shopfronts and balustrades. They serve as edge finishing profiles for composite panels and cladding sheets, and as track channels for sliding door and window systems. Larger C-channels (60×30 and above) function as structural framing members in lightweight curtain wall systems, canopy supports and parapet copings.
Electrical & Cable Management: C-channels are a standard solution for cable tray systems and cable ducting in commercial and industrial buildings. The U-shaped cross-section naturally retains cables and wiring while allowing easy access for maintenance. Sizes 30×15 to 50×25 mm are commonly specified by electrical contractors for overhead and underfloor cable routing.
Industrial Automation & Mechanical Engineering: In the automation sector, aluminum channels serve as linear guide housings, sensor mounting rails, pneumatic cylinder brackets and conveyor side guides. Their consistent dimensional tolerances enable precision assembly in machine-building applications where repeatability is critical.
Solar & Renewable Energy: Aluminum C-channels function as rail connectors, panel edge retainers and cable management channels within photovoltaic mounting structures. The corrosion resistance of EN AW-6060 ensures long service life in exposed rooftop and ground-mounted installations. Explore our PV profiles range for purpose-designed solar sections.
Lighting & LED Applications: Small aluminum channels (8×8, 10×10, 12×12 and 15×10 mm) are widely used as LED strip housings and lighting channels. The aluminum body serves as an efficient heat sink for LED strips, extending LED lifespan, while the channel geometry provides a clean mounting solution with optional diffuser covers.
Furniture, Shopfitting & Display: C-channels serve as poster rail inserts, shelf-edge price label holders and glass retention channels in display cabinets and retail fixtures, combining functional panel retention with a slim, unobtrusive profile.
Material Comparison
EN AW-6060 vs EN AW-6063: Both alloys are suitable for C-channel production. EN AW-6060 is the standard choice offering excellent extrudability across the full size range. EN AW-6063 provides marginally higher strength and a finer surface finish after anodizing, making it the preferred option for visible architectural channels. EN AW-6082 delivers significantly higher tensile strength (290–340 MPa) for structural channels in load-bearing applications.
Aluminum vs steel: An aluminum C-channel 50x25x3 mm weighs approximately 0.75 kg/m compared to approximately 2.19 kg/m for an equivalent steel channel — a 66% weight saving. This weight advantage reduces structural loading, lowers shipping costs and simplifies on-site installation.
Aluminum vs stainless steel: Aluminum C-channels are substantially lighter and more cost-effective than stainless steel equivalents. In most indoor and atmospheric outdoor environments, the corrosion performance of aluminum (especially when anodized) matches stainless steel at a significantly lower cost per metre.
Surface Treatment Options
All aluminum C-channels are available in mill finish (raw/walzblank) as standard. For enhanced durability and visual appeal, channels can be anodized in natural silver, black or bronze per EN 12373, producing a hard oxide layer of 10–25 µm. Powder coating in any RAL colour is available on request for colour-coordinated architectural and interior installations.
Quality & Certification
ULAMEX is an EN 1090 and ISO 3834-2 certified supplier. All aluminum C-channels are available with mill test certificate 3.1 per EN 10204, guaranteeing full traceability of chemical composition and mechanical properties. Our certified supplier status ensures your project meets CE marking requirements for structural aluminium applications under EN 1090-3.
Frequently Asked Questions
What is the difference between a C-channel and a U-channel in aluminum?
In practice, the terms C-channel and U-channel are used interchangeably for aluminum profiles with a U-shaped cross-section. Technically, a C-channel may have slightly inward-turned flanges (lips) for added stiffness, while a standard U-channel has straight, parallel flanges. ULAMEX stocks both variants — specify your preferred geometry when requesting a quote.
Can aluminum C-channels be used for structural applications?
Yes. Larger C-channels (60×30 mm and above with wall thicknesses of 3–7 mm) are suitable for light to medium structural applications when designed per Eurocode 9 (EN 1999). For heavy structural loads, consider upgrading to EN AW-6082 alloy channels or complementing with steel C-channels for primary load paths.
What aluminum channel size is best for LED strip lighting?
For standard LED strip installations, channels in the 8×8 to 15×10 mm range are most popular. A 12x12x1.5 mm channel accommodates most 10 mm LED strips while providing adequate heat dissipation. For wider LED strips or dual-row installations, choose 20×10 or 25×15 mm channels.
How do you cut aluminum C-channels to size?
Aluminum C-channels can be cut cleanly with a mitre saw fitted with a non-ferrous metal blade (TCT), a bandsaw, or a circular saw with an appropriate blade. For precision cuts, use a slow cutting speed and apply cutting fluid to reduce burring. ULAMEX offers a professional cutting-to-size service — specify your required lengths in your quote request.
Related Products & Request a Quote
Complete your specification with related ULAMEX products: aluminum profiles for T-slot and structural framing, aluminum angles for corner connections, aluminum flat bars for reinforcement, and aluminum tubes and bars. For C-channels in alternative materials, see our steel C-channels and stainless steel U-profiles.
Request a quote with your required channel dimensions, wall thicknesses, quantities and any surface treatment preferences. Our team responds within 24 hours. Call us directly at +48 504 424 761.