2 1/2" Aluminum Sheets | McMaster-Carr

When compared to standard 304 stainless steel, this material can be machined faster with less wear on cutting tools. It's also called Prodec and Project 70+.

Easy-to-Machine 303 Stainless Steel

Widely used for fabricating fittings and fasteners, 303 stainless steel machines quickly without sticking to cutting tools.

Corrosion-Resistant 316 Stainless Steel

The addition of molybdenum gives 316 stainless steel excellent corrosion resistance. Use it in a variety of marine and chemical-processing applications.

High-Strength 17-4 PH Stainless Steel

With a higher chromium content than 15-5 PH stainless steel, this high-strength 17-4 PH offers better corrosion resistance. It is also known as 630 stainless steel.

Aluminum

Multipurpose 6061 Aluminum Sheets and Bars

The most widely used aluminum, 6061 is fabricated into everything from pipe fittings and containers to automotive and aerospace parts. It is strong and corrosion resistant, plus it's easy to machine and weld.

Tight-Tolerance Multipurpose
6061 Aluminum Sheets and Bars

These sheets and bars are precision ground either on all six sides or just on the top and bottom.

Oversized Multipurpose 6061 Aluminum Sheets

The thickness is oversized to allow for finishing to exact requirements.

High-Strength 2024 Aluminum Sheets and Bars

While 2024 aluminum was initially designed for structural components in aircraft, it's now widely used when a high strength-to-weight ratio is needed, such as for gears, shafts, and fasteners. It offers similar performance to 7075 aluminum, but it’s not as strong.

High-Strength 7075 Aluminum Sheets and Bars

Originally developed for aircraft frames, uses for 7075 aluminum now include keys, gears, and other high-stress parts. It is often used as a replacement for 2024 aluminum because it’s stronger and provides similar performance in all other aspects.

Fatigue-Resistant 7050 Aluminum

Substitute 7050 aluminum for 7075 in structural applications when high stress-corrosion resistance is required. It is the same material that's used for bulkheads and fuselage frames.

Easy-to-Machine MIC6 Cast
Aluminum Sheets and Bars

MIC6 is cast from a high-strength 7000-series aluminum, then stress relieved to maintain dimensional stability during high-speed machining.

Steel

Oversized Hardened Multipurpose
4140 Alloy Steel Bars

Because the thickness is oversized, you can finish these bars to your exact requirements.

Multipurpose 4140 Alloy Steel Bars

Also known as chrome-moly steel, this versatile 4140 alloy steel is used for a wide range of parts, such as gears, axles, shafts, collets, and die holders. It resists fracturing from repeated stress.

Low-Carbon Steel Sheets and Bars

Also known as mild steel, low-carbon steel is easy to machine, form, and weld. It's widely fabricated into parts that don’t require high strength.

Tight-Tolerance Low-Carbon Steel Bars

Sometimes called flat stock, these bars have a thickness and width that are precision ground to a tight tolerance.

Easy-to-Machine 1215 Carbon Steel Bars

A lead-free alternative to 12L14, 1215 carbon steel contains the same amount of sulfur and phosphorus for excellent machinability. It’s often used for jigs and fixtures.

Ultra-Machinable 12L14 Carbon Steel Bars

The lead additive acts as a lubricant, which allows 12L14 carbon steel to withstand very fast machining. It's used to fabricate a wide variety of machine parts.

Easy-to-Machine Low-Carbon Steel

Sulfur is added to these sheets, which helps them produce smaller chips than other low-carbon steel sheets when they’re machined. Smaller chips mean less clogging and more coolant flow while you cut.

Copper, Brass, and Bronze

Ultra-Machinable 360 Brass Bars

With the highest lead content of all the brass alloys, 360 offers the best machinability. Often called free-machining and free-cutting brass, it stands up to high-speed drilling, milling, and tapping operations with minimal wear on your tools. It’s commonly used for gears, pinions, and lock components.

Oversized Weldable 954 Bearing Bronze Bars

Thickness and width are oversized to allow for finishing.

Multipurpose 110 Copper Sheets and Bars

Offering high electrical conductivity and formability, 110 copper is 99.9% pure. Also known as ETP copper, it's often used in electrical applications, such as for bus bars and wire connectors, as well as for flashing, gaskets, and rivets.

Plastic

Wear-Resistant Easy-to-Machine Delrin®
Acetal Resin Sheets, Bars, and Strips

Delrin® acetal resin, also known as acetal homopolymer, is stronger and stiffer than acetal copolymer.

Wear-Resistant Easy-to-Machine
Acetal Sheets and Bars

An economical alternative to Delrin® acetal resin, this acetal copolymer offers similar wear resistance.

Slippery UHMW Polyethylene
Sheets, Bars, and Strips

In addition to a low-friction surface that prevents sticking and binding, this tough material is impact and wear resistant to handle the scuffs, scrapes, and strikes that other plastics can’t.

Wear-Resistant Nylon Sheets, Bars, and Strips

Also known as nylon 6/6, this general purpose material is often used for bearings, gears, valve seats, and other high-wear parts.

Clear Scratch- and UV-Resistant
Cast Acrylic Sheets, Bars, and Cubes

Cast acrylic is easier to machine than extruded acrylic. It's comparable to Lucite and Plexiglas® Acrylic.

Multipurpose Flame-Retardant Garolite G-10/FR4 Sheets and Bars

Multipurpose Flame-Retardant
Garolite G-10/FR4 Sheets and Bars

A good all-around choice, Garolite G-10/FR4 is strong, machinable, and electrically insulating. It meets UL 94 V-0 for flame retardance.

Stainless Steel

Multipurpose 304 Stainless Steel

Easy-to-Machine Multipurpose 304 Stainless Steel