Wrought Plate

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Howard Precision Metals Stocks Quality Wrought Aluminum Products

At Howard Precision Metals, we stock both standard Aluminum Association tolerance 6061 T651 aluminum plate and 6061 T651 aluminum plate that meets Precision Plate® specifications. These precision plate tolerances guarantee 1/2 commercial, all on the plus side thickness tolerances along with .060” short span flatness tolerances. Other products that meet these same specifications are Type 200 Tooling Plate® and M-61®

What is Type 200 Tooling Plate?

Type 200 tooling plate is a very old trade name for Alcoa’s improved tolerance 6061 T651 rolled plate. Years ago, Kaiser’s Precision Plate™ and Alcoa’s Type 200 tooling plate™ raised the bar over other mills in their tolerance of 6061 T651 rolled, or wrought plate. The published standards, or aluminum specifications, are found in the Aluminum Association Standards and Data Book. These are the standards that all mills have to meet. Unfortunately, the tolerances are extremely liberal. This can allow sub-standard producers to qualify with their products. In order to separate from the crowd, Alcoa created Type 200 Tooling Plate® and Kaiser created Precision Plate®. Both mills made improvements to the thickness and flatness tolerances of their respective wrought plate products. The majority of the 6061 T651 plate up through 3.0″ thick stocked on our floor is produced to the Type 200 tooling plate or Kaiser Precision plate tolerances. A new name that is also producing to the Precision Plate tolerances is Hulamin’s M-61®. However, the Hulamin product is only produced up to 2.50″ thick. If you have questions regarding the tolerances of standard AA 6061 T651 plate as compared to aluminum plate produced to precision plate tolerances, contact Howard Precision Metals today.

Don’t Confuse Wrought Tooling Plate for Cast Tool and Jig Plate.

As explained above, an old trade name for rolled 6061 T651 is Type 200® Tooling plate. This has been the cause for purchasing errors over the years because some people think of cast tooling plate when they hear the phrase, “tooling plate.” Cast Tooling Plate, Cast Tool & Jig Plate, C T & J are all references for a cast aluminum product. Be sure you read your print carefully. There is a world of difference between a wrought product, such as 6061 T651 rolled plate, and a cast aluminum plate product, such as Mic-6® cast tool and jig plate.

What is the Difference Between 6061-T651 Rolled Aluminum Plate and Cast Tool & Jig Plate?

This is the most common question that our customers ask us. The quick answers is 6061 T651 is a rolled and heat treated plate that gets its physical properties from the chemistry, the rolling and elongating of grain structure, and the heat treatment process. A Cast Tool & Jig plate is produced by casting metal. There is a homogenization process that helps with grain uniformity, but there is no secondary rolling or quenching process. The 6061 T651 aluminum plate will have residual stress as a result of the rolling and heat treating process. However, the 6061 also has higher strength. The Cast Tool & Jig plate products are much lower in strength but also much lower in residual stress. Most Cast Tool and Jig plate manufacturers guarantee their specified flatness even after machining the part. If there is a need for strength in your part design, then you should not consider Cast Tool & Jig plate. If strength is not a concern, Cast Tool & Jig plate will offer much better dimensional stability and flatness to your finished part.

7075, 2024, and 7050 Wrought Aluminum Plate

Our 7075, 7050, and 2024 plate products are typically stocked with a plus side thickness tolerance as well. This is not a standard practice to most distributors. Because our customer base is mostly using these alloys for machining applications, we stock it oversize on the thickness. Additional alloys, thicknesses, sizes, and tempers are also available but may require a mill minimum and the current mill lead time. Material certifications are available on all plate material in house, including every random piece on our Random Rack. All of our wrought aluminum plate products are typically stocked in master plate sizes of 48.5″ x 144.5″ and 60.5″ x 144.5″. If you need a custom size, we have you covered. Our multiple vendor base allows us to handle non-standard requirements quickly and efficiently.