6061 Aluminum Flat Bars
About 6061 Aluminum Flat Bars
6061-T6 aluminum flat bar offers excellent machinability, a high strength-to-weight ratio, and weldability. Conforms to ASTM B211. Ideal for structural frames, brackets, and machined components. In stock for same-day pickup.
Quick Facts
- Material: 6061-T6 Aluminum
- ASTM Standard: B211
- Temper: T6 (Solution heat-treated, artificially aged)
- Available Sizes: Thicknesses from 1/8", widths from 1/2"
- Location: Los Angeles warehouse
- Services: Custom size, same-day pickup
Overview
6061-T6 aluminum is a precipitation-hardened alloy with magnesium and silicon as its main alloying elements. This heat-treatable grade offers a versatile combination of high strength, good corrosion resistance, and excellent weldability. The T6 temper indicates it has been solution heat-treated and artificially aged to achieve its optimal strength properties, making it one of the most widely used aluminum alloys for general-purpose structural and fabrication applications.
The flat bar form provides a rectangular cross-section with sharp, defined corners, ideal for structural framing, support braces, base plates, and mounting blocks. Its consistent dimensions and flat surfaces make it easy to drill, tap, mill, and weld. This shape is a fundamental building block for projects requiring strong, lightweight, and corrosion-resistant components, from custom machinery parts to architectural trim and transportation equipment.
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
- Structural Framing: Support members and chassis for machinery and vehicles due to its high strength-to-weight ratio.
- Aerospace: Aircraft fittings, brackets, and non-critical structural components where light weight is key.
- Machined Parts: Custom brackets, mounting plates, and jigs that require good machinability and dimensional stability.
- Architectural: Window frames, door sills, and decorative trim where corrosion resistance and a clean finish are needed.
- Marine: Components for boat structures and fittings, benefiting from its resistance to saltwater corrosion.
- Electronics: Chassis, enclosures, and heat sinks that require a lightweight, non-magnetic material.
- Transportation: Bus and truck body components, trailer frames, and automotive parts.
- General Fabrication: Base plates for equipment, gussets for structural reinforcement, and general repair work.
Working with 6061 Aluminum Flat Bars
Machining
6061-T6 aluminum has good machinability. It produces consistent chips and can be machined at high speeds with standard tooling. Use of a coolant is recommended for best surface finish and to prevent tool buildup.
Welding
This alloy is easily welded using common methods like TIG (GTAW) and MIG (GMAW). The T6 temper strength will be reduced in the heat-affected zone (HAZ). For full strength restoration, a post-weld heat treatment may be required.
Finishing
6061 aluminum can be easily anodized for enhanced corrosion resistance and color, powder coated, or polished to a bright finish. Its smooth mill surface provides a good base for various finishing treatments.
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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 (45,000 PSI tensile) due to its alloy composition and T6 aging process, making it ideal for structural use. 6063-T5 (27,000 PSI tensile) has a better surface finish and is easier to extrude, so it's often used for architectural trim.
Q: Can I use 6061 aluminum flat bar for marine applications?
A: Yes, 6061-T6 has good corrosion resistance suitable for many marine environments. However, for applications with constant saltwater immersion, 5052 or 5083 alloys offer superior corrosion resistance and are often preferred.
Q: Is 6061 aluminum heavy?
A: No, 6061 aluminum is a lightweight metal with a density of 0.098 lb/inÂŗ, approximately one-third the weight of steel. This high strength-to-weight ratio is one of its primary advantages for many applications.
Stock & Custom Sizes
Available widths: 1/2" to 6". Thicknesses: 1/8" to 2". Standard lengths: 12 ft. Custom size available.
Same-day cutting and Los Angeles pickup available.
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