6061 Aluminum Squares
About 6061 Aluminum Squares
6061-T6 aluminum square bar offers a high strength-to-weight ratio, excellent machinability, and superior corrosion resistance. Meets ASTM B211. Ideal for structural frames and machined components. Los Angeles stock with custom size available.
Quick Facts
- Material: 6061-T6 Aluminum
- ASTM Standard: B211
- Temper: T6 (Solution heat-treated, artificially aged)
- Available Sizes: From 1/4" square
- Location: Los Angeles warehouse
- Services: Custom size, same-day pickup
Overview
6061-T6 is a precipitation-hardened aluminum alloy containing magnesium and silicon as its major alloying elements. This combination gives it excellent mechanical properties, including high strength, good toughness, and great weldability. Known as a structural alloy, it is one of the most versatile heat-treatable alloys available. Its good surface finish and excellent corrosion resistance, especially to atmospheric conditions, make it a popular choice for a wide range of applications where durability and appearance are important factors.
The square bar form provides sharp corners and dimensional accuracy, making it suitable for projects requiring precise fits and structural integrity. 6061 aluminum squares are frequently used in construction for brackets and frames, in machinery for jigs and fixtures, and in transportation for automotive and marine components. Its lightweight nature combined with its strength makes it an effective alternative to steel in many structural scenarios where weight savings is a priority without sacrificing performance.
Technical Specifications
Mechanical Properties (6061-T6)
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | 45,000 | PSI |
| Yield Strength | 40,000 | PSI |
| Elongation | 12 | % |
| Hardness | 95 | HB |
| Shear Strength | 30,000 | PSI |
Applicable Standards
- ASTM B211: Standard Specification for Aluminum and Aluminum-Alloy Bar, Rod, and Wire.
Common Applications
- Machinery: Jigs, fixtures, base plates, and machine parts - Excellent machinability and dimensional stability.
- Structural: Architectural frames, support brackets, gussets, and braces - High strength-to-weight ratio.
- Transportation: Automotive chassis components, marine fittings, and aircraft structural parts - Good strength and corrosion resistance.
- Electronics: Heatsinks, mounting frames, and electronic enclosures - Good thermal conductivity and workability.
- Recreational: Bicycle frames, scuba tanks, and fishing equipment - Lightweight and strong.
- Aerospace: Non-critical structural components and fittings - Versatile properties and proven performance.
Working with 6061 Aluminum Squares
Machining
6061-T6 aluminum has good machinability. It produces fine, easily broken chips and can be machined at high speeds. Using lubricants is recommended for the best surface finish and to prevent tool buildup, especially during aggressive cutting operations.
Welding
This alloy exhibits excellent weldability using common methods like TIG (GTAW) and MIG (GMAW). Post-weld heat treatment may be required to restore the material to its full -T6 temper strength in the heat-affected zone, as welding will anneal the material locally.
Finishing
6061 aluminum responds well to various finishing methods. It can be anodized to improve corrosion and wear resistance, powder-coated for color, or polished to a bright finish. Its natural mill finish is also aesthetically suitable for many industrial applications.
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Frequently Asked Questions
Q: What is the difference between 6061-T6 and 6063-T5 aluminum?
A: 6061-T6 has higher strength (40,000 PSI yield) due to its composition and T6 temper, making it ideal for structural applications. 6063-T5 has lower strength (21,000 PSI yield) but a better surface finish and is easier to extrude, making it common for architectural trim and custom shapes.
Q: Can I use 6061 aluminum square bar for outdoor structural projects?
A: Yes, 6061 aluminum has excellent corrosion resistance, making it suitable for outdoor use. For marine or direct saltwater environments, 5052 or 5083 series aluminum may offer superior performance, but 6061 is a reliable choice for general atmospheric exposure.
Q: Should I choose 6061 or 7075 aluminum for a high-stress part?
A: For high-stress applications like aircraft components, 7075-T6 is superior, with a yield strength of 73,000 PSI. However, 7075 is not recommended for welding. If welding is required, 6061-T6 (40,000 PSI yield) is the better choice, offering a great balance of strength and excellent weldability.
Stock & Custom Sizes
Available sizes: 1/4" to 4" square. Standard lengths: 12 ft. Custom size available.
Same-day cutting and Los Angeles pickup available.
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