Overview

6061 Aluminum Squares represent one of the most versatile and widely used aluminum alloys in the manufacturing and metalworking industries. Known for its exceptional combination of strength, workability, and corrosion resistance, 6061 is a precipitation-hardened alloy containing magnesium and silicon as its primary alloying elements. This composition makes it an ideal choice for a vast range of structural and non-structural applications.

The 6061 aluminum alloy is part of the 6xxx series, which is renowned for its excellent extrudability. The addition of magnesium and silicon results in the formation of magnesium-silicide during the heat-treating process, giving 6061 aluminum squares their notable mechanical properties. This alloy is typically supplied in the T6 temper, indicating a solution heat-treated and artificially aged condition, which provides optimal strength and hardness.

6061 aluminum squares are a fundamental material across numerous sectors. Their high strength-to-weight ratio makes them perfect for aerospace components, marine fittings, and automotive parts like chassis and frames. In general fabrication, they are commonly used for machine parts, jigs, fixtures, and welding assemblies. The architectural and construction industries utilize these squares for handrails, decorative trim, and structural supports due to their good appearance and weathering characteristics. Additionally, they are a top choice for consumer goods, including bicycle frames and high-end outdoor equipment.

For industrial buyers, 6061 aluminum squares offer significant advantages. Their excellent machinability allows for efficient milling, drilling, and turning, reducing production time and cost. The alloy's weldability by all common methods provides design flexibility for complex fabrications. Furthermore, its inherent resistance to corrosion minimizes the need for extensive protective coatings, ensuring long-term durability in harsh environments. Sourcing 6061 aluminum squares from a reliable supplier guarantees consistent quality, dimensional accuracy, and compliance with industry standards, making it a dependable material for critical projects.

Specifications

• Standard: ASTM B221, ASTM B308/B308M
• Alloy: 6061
• Temper: T6 (Solution Heat Treated and Artificially Aged)
• Shape: Square Bar
• Dimensions: 0.5" to 6" square
• Lengths: Standard 12' random mill lengths, cut-to-size available
• Tolerances: Conforms to ASTM standards for straightness, twist, and cross-sectional dimensions
• Surface Finish: Mill finish, typically smooth and uniform

Applications

• Aerospace components and structural parts
• Automotive frames, chassis, and suspension components
• Marine hardware, fittings, and structures
• Bicycle frames and components
• Machine parts, jigs, and fixtures
• Architectural handrails, trim, and decorative elements
• Welding assemblies and structural fabrications
• Outdoor equipment and consumer goods
• Tactical flashlight bodies and housings
• General industrial and structural applications

Weldability

• Excellent weldability using MIG, TIG, and Stick welding processes
• Recommended filler metals: 4043 or 5356 aluminum filler wire
• Pre-heating may be required for thicker sections to prevent cracking
• Post-weld heat treatment may be necessary to restore full strength in the heat-affected zone
• Proper cleaning and oxide removal essential for quality welds

How to Measure

Order Checklist

• Square size (width x width in inches)
• Required length (inches or feet)
• Alloy and temper (6061-T6)
• Quantity (pieces or total length)
• Cutting instructions (specific lengths, tolerance)
• Surface finish requirements
• Any certifications (MTR, material traceability)
• Special handling or packaging requirements