Aluminum Association vs American Standard Channel
We’ll explain the practical differences between American Standard (AS) and Aluminum Association (AA) aluminum channels—how their legs are shaped, how to measure them correctly, which alloys/tempers you’ll see, and when to choose each for real‑world projects.
Which aluminum channel fits your build: straight-leg or tapered?
Not all “U-channel” is the same. American Standard has tapered legs for strength; Aluminum Association has straight legs with squarer corners for clean fits. Below, we’ll show how to measure, when taper matters, and how to choose the right alloy/temper in minutes.
- Pictured: Aluminum American Standard (left), Aluminum Association (right)
Quick comparison guide for American Standard Channel and Aluminum Association Channel
| Property | American Standard (Structural “C”) | Aluminum Association (Architectural / Sharp-Corner) |
|---|---|---|
| Typical Alloy/Temper | 6061-T6 | 6063-T52 |
| Leg Geometry & Corners | Tapered legs; thickness varies from tip to web; inside opening narrows; larger inside radii | Straight legs; consistent thickness; squarer inside/outside corners for flush fits |
| Strength vs. Formability | Higher strength & stiffness; good machinability; less formable than 6063 | Excellent surface finish; lower strength than 6061 |
| Best For | Brackets, machine bases/guards, trailer framing, heavy supports | Frames, trim/edging, display fixtures, architectural enclosures |
| Measurement Notes | Measure A (depth), B (leg width) at tips, and C (web). Allow clearance at the web due to taper | Measure A, B, C as drawn; straight legs give a consistent opening along the depth |
| Finish / Anodize | Takes mechanical finish well; anodize acceptable but not as uniform as 6063 | Excellent anodizing response and appearance |
| Typical Stock Lengths | Typically 25′ mill lengths (AS/6061); we cut to your exact size. Full 25′ sticks available by request (ships freight). | Typically 16′ mill lengths (AA/6063); we cut to your exact size. Full 16′ sticks available by request (ships freight). |
| Ordering Tips | Verify taper won’t pinch nested parts near the web; choose cut lengths to reduce freight | Great for visible work and mating panels/caps; confirm strength requirements before substituting for AS |
Visual proiles and how to measure
Use A, B, C to avoid ordering mistakes. A = base width; B = leg height (flange width); C = web/thickness.
Tips:
-
- On 6061 American Standard channel, the inside opening shrinks toward the web—check clearances where parts must nest.
- On 6063 Aluminum Association channel, inside/outside corners are squarer, which helps with caps, infill panels, and miters.
Save time and freight
- Custom‑cut to length: we’ll cut from mill lengths (commonly 16' or 25') to your exact size.
- Standard custom‑cut tolerance: ±1/16". Need tighter? Contact us before ordering.
- Shipping: Long pieces may ship freight; consider breaking into cut lengths to reduce cost.
Explore Channel and Angle options
Quick FAQs
Cut2Size Metals provides general properties and typical uses for the products we carry, however, the suitability of a material for any application or the manner of its use is the sole responsibility of the customer. If you have specific requirements for your application, we strongly suggest contacting us before purchasing. For specific questions or further assistance, feel free to call us at (812) 429-1634. We're here to help!
Why won’t my mating part fit an American Standard channel?
Can I substitute AA for AS?
Which alloy for a visible frame vs. load‑bearing bracket?
Can you cut, miter, or drill before shipping?
Is “U-channel” the same as “C-channel”?
Do “Aluminum Association” (AA) and “American Standard” (AS) apply only to aluminum?
American Standard or Aluminum Association Channel? We’ll help make the choice easier.
Whether you’re a fabricator, builder, or DIYer, we’re here to help you choose the right aluminum channel for your project.
Order online with confidence, or give us a call if you need help deciding between sizes, tolerances, or material options. Have questions about an application or don’t see the size you need? Just ask—we’re happy to help. Need something cut to length? We make it easy.
Working on a project? Share your photos or reach out with questions—we’re always happy to help.
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