Aluminum diamond plate (aka “aluminum tread plate”, “aluminum floor plate”, or “aluminum checker plate"), is available in 6061-T6 and 3003-H14 alloys. Aluminum diamond plate is commonly seen on fire trucks and truck toolboxes. The raised diamond pattern provides a skid-resistant surface, making it ideal for walkways, and toolboxes.

Please Note: Although diamond plate has a raised pattern, it is NOT a grip surface and will become very slick if wet or snow-covered. Additionally, it is worth noting that long-term exposure to outside elements without painting or applying a clear coat finish will result in the material oxidizing (developing a white chalky surface).

The 3003-H14 aluminum diamond plate arrives from the mill with a shiny bright finish; it is often reffered to as"'Tread Bright". The 3003 alloy is softer and more formable, making it more difficult to machine and vulnerable to scratches. The 3003 diamond plate is a popular choice for environments that require good corrosion resistance and weldability. It is often used in applications where a lightweight, yet sturdy material is needed.

The 6061-T6 aluminum diamond plate can arrive from the mill with either a dull or shiny finish. The 6061-T6 alloy is known for its increased strength and durability. This makes the 6061 diamond plate suitable for more demanding applications, such as industrial settings, flooring in commercial vehicles, and architectural uses where strength is a key requirement.

Both the 3003 and 6061-T6 aluminum diamond plates are available in various thicknesses and can be custom-cut to size. At Cut2Size Metals, discover tread plate available in both standard and custom-cut sizes, tailored to your project requirements. Most orders are shipped the same day in our high-quality packaging, safeguarding your materials.

Standard sizes & custom cuts: Standard sizes are 48" x 192" or 60" x 192" depending on thickness, alloy, and finish. All can be cut to size.
Custom-cut tolerance: +/- 1/16". If you need a tighter tolerance, call us!
Volume discounts: Unit prices drop on most custom-cut products when you increase the quantities.

Cut2Size Metals provides general properties and typical uses for the alloys 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.
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Spec Charts & Available Sizes

Aluminum 3003 & 6061 Alloy Characteristics, Applications & Finishes

3003 Aluminum

Alloy 3003 is the most widely used of all aluminum alloys. It is a non-heat-treatable aluminum alloy. 3003 aluminum is highly workable, formable, and weldable, with exceptional corrosion resistance. Alloy 3003 is often used in applications that require excellent corrosion resistance but not necessarily high strength. 3003 aluminum is a softer, more formable aluminum that can scratch easily (when drilled and tapped, it is like chewing gum). It is an alloy that is particularly popular for outdoor projects that require extensive forming or joining. It is worth noting that long-term exposure to outside elements without painting or applying a clear coat finish will result in the material oxidizing (developing a white chalky surface).

Characteristics of alloy 3003:

Machinability = Good
Corrosion Resistance = Excellent
Weldability = Excellent
Bending/Forming = Excellent
Magnetic = No
Heat Treatable = No

Common applications of alloy 3003:

General sheet metal work, including roofing, gutters, and siding.
Cooking utensils and kitchen equipment.
Trim, awnings, and architectural applications.
Ductwork.
Truck and trailer parts.
Storage and fuel tanks.
Chemical processing equipment and tanks.
Pressure vessels.
Signage and mailboxes.
Heat exchangers in HVAC systems, radiators, and air conditioning units.

6061 / 6061-T6 Aluminum

Alloy 6061 is a heat-treatable aluminum alloy. It is known for its excellent strength and corrosion resistance. Alloy 6061 is a more machinable aluminum and is the workhorse of heat-treated alloys. It is often used in various structural and fabrication applications. It is worth noting that long-term exposure to outside elements without painting or applying a clear coat finish will result in the material oxidizing (developing a white chalky surface).

Alloy 6061-T6 is a temper condition indicating that it has been heat-treated and artificially aged, which increases the strength of the material. The "-T6" temper provides improved mechanical properties, including higher tensile strength and hardness. It maintains good corrosion resistance and retains its formability. This temper is commonly used in aerospace, automotive, and structural applications.

Characteristics of alloy 6061:

Machinability = Good
Corrosion Resistance = Good
Weldability = Excellent
Bending/Forming = Fair
Magnetic = No
Heat Treatable = Yes

Common applications of alloy 6061:

Aerospace: Aircraft components, including fuselages, wings, and structural parts.
Automotive: Wheels, frames, suspension components, and engine parts.
Structural applications.
Production of sailboat, canoe, truck, and bus bodies.
Scaffolding and transmission towers.
Furniture.
Marine fittings, hardware, boat hulls, and masts.
Chemical equipment and hardware.
Bike frames.

Finishes

What is a mill finish?
Mill finish means that items come to us exactly as they are finished at the mill. All materials can have some surface scuffs and scratches and may have a dull or matte finish.