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Aluminum 1100 Shim Stock, Full Hard H18/H19 Temper, 2B Finish, QQA250/1, ASTM B209

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Specifications for this item
Width Tolerance
+/-0.005  inches
Item Shape
Shim Stock
Tensile Strength Max
22000  PSI
Color Name
Material Type
Brand Name
Small Parts
Length Tolerance
+1  inches
Exterior Finish
Unpolished (Mill)
Specification Met
Full Hard
Overall Length
100  inches
System of Measurement

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Key Features

  • Aluminum 1100 shim stock is lightweight and easier to machine than stainless steel
  • Full-hard temper provides high hardness and yield strength ratings for dimensional stability during use
  • Conforms to specifications ASTM B209 and Fed. Spec. QQ-A-250/1

Product Description

The aluminum 1100 shim stock roll has a full-hard temper for dimensional stability and is made of a lightweight, nonmagnetic aluminum alloy that can be machined in half the time of stainless steel. Aluminum 1100 is considered commercially pure with its 99.00% minimum aluminum content and displays properties such as excellent weldability; moderate strength; and some of the highest corrosion resistance of all aluminum alloys. The full-hard temper provides high hardness and yield strength ratings for dimensional stability during use. This roll conforms to American Society for Testing and Materials (ASTM) B209 and Federal Specification (Fed. Spec.) QQ-A-250/1.

Shim stock is fabricated by cold rolling, which is the process of reducing a material’s thickness by passing it between two rollers. Cold rolling can cause a temper to form in the material, increasing the yield strength (the amount of force necessary to permanently bend or deform the material) as well as hardness ratings of the material. The higher its hardness and yield strength ratings, the more likely the shim is to preserve its thickness and shape over time while in use, but the harder it will be to bend and shape. Quarter-hard tempered material provides the lowest hardness and yield strength ratings and the greatest ductility of the tempers, with half-hard, three-quarters-hard, full-hard, spring, and blue tempered material respectively increasing in hardness and yield strength. Annealed shim stock has been heated and cooled to remove any temper and reinstate the material’s natural formability (ability to be bent) after it has been cold rolled.

Shim stock, which is sold in either sheets or rolls, is a very thin material that can be cut, sawed, stamped, milled, or bored into specific shapes. These fabricated pieces, also called shims, can be placed between objects for a variety of uses, including added support, improved leveling, increased insulation, tighter sealing, and better spacing. Shims can also be used to fill in gaps between machine parts that are prone to wear, avoiding costly replacement parts and lost production time. While most shim stock is sold in standard thicknesses of solid material, shim stock with laminated layers is composed of stacked foil sheets that have been pressed and heated together and that peel off to adjust the shim’s thickness to the application.

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