Aluminum Flat Bar

Multipurpose Aluminum Flat Bar in 1100, 3003, & 6061 Grades

Action Stainless offers aluminum flat bar in a wide range of widths and thicknesses to support applications in construction, architecture, and custom fabrication. Recognized for its strength, corrosion resistance, and clean surface finish, aluminum flat bar is a top choice for both indoor and outdoor projects requiring formability and durability.


We supply flat bar in 1100, 3003, and 6061 grades, with availability in both stock sizes and custom dimensions. These alloys offer the right mix of machinability, structural strength, and surface quality for a broad range of use cases.

Finishes & Processing Services

Aluminum flat bar is typically available in mill finish, offering a smooth and consistent surface ideal for welding, machining, and general fabrication. For architectural and corrosion-sensitive applications, brushed and anodized finishes are available upon request. Action Stainless provides in-house processing capabilities including saw cutting, CNC milling, and light forming. These services ensure every order meets project specifications for size, finish, and turnaround.

Available Styles and Materials

We stock aluminum flat bar in:

  • 1100 Aluminum Flat Bar

    Soft, ductile, and highly corrosion-resistant; ideal for chemical processing, decorative trim, and electrical applications

  • 3003 Aluminum Flat Bar

    Moderate strength with excellent corrosion resistance; commonly used in architectural, roofing, and HVAC projects

  • 6061 Aluminum Flat Bar

    Strong, versatile, and machinable; perfect for structural support, framing, and industrial fabrication

  • Widths

    From 1/2" to 12"

  • Thicknesses

    From 1/8" to 1/2" and beyond

  • Mill Finish

    Standard for general use

  • Anodized/Brushed Finish

    Offered for architectural or corrosion-sensitive environments

This range supports small- and large-scale fabrication, with both stock and custom options available.

Aluminum Flat Bar Specifications

Aluminum products used in flat bar fabrication are available in the following specifications:

Grades Offered: 1100, 3003, and 6061: suited for machining, structural, and architectural work requiring strength and clean finish.

Product Forms: Flat bar in widths from 1/2" to 12", and thicknesses from 1/8" up to 1/2"+.

Finishes: Mill finish standard; brushed and anodized available upon request.

Processing Capabilities: Saw cutting, CNC milling, machining, and forming for precise dimensional control and fast delivery.

These material options and fabrication services support a wide range of industrial, architectural, and custom expanded metal applications.

Aluminum Flat Bar Applications

Aluminum flat bar is commonly used in:

Structural Fabrication: Brackets, support beams, crossbars, handrails, reinforcements

Architectural Features: Trim, moldings, accent framing, facade bands, panel edging

Tooling and Fixtures: Jigs, templates, fixture bases, custom tools, positioning rails

Transportation Equipment: Step plates, trailer sides, luggage racks, mount bars, hardware frames

General Manufacturing: Frames, spacers, guide rails, mounting plates, base structures