This sample pack is a pack of 4 sheets of 4 inch x 4 inch cuts, and comes with one each of the following thicknesses:
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12oz. (0.0162 inch); PID 4381
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16oz. (0.0216 inch); PID 1910
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24oz. (0.032 inch); PID 1911
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32oz. (0.043 inch); PID 1912
The Copper Sheet Sample Pack ASTM B370 offers an inexpensive way to make sure you get the correct material for your project. ASTM B370 is the architectural grade copper and is often used in roofing, gutters, downspouts, and flashing. For more general-purpose copper applications like machining, rolling, or electrical applications, you would use ASTM B152 (copper 110). The thickness for ASTM B370 is expressed in the "ounce-weight" system used in construction, while ASTM B152 (C110) is expressed in standard dimensional units (inches).