Wrought Copper Alloy Bar & Plate (UNS "C" 100 through 700 series of WROUGHT copper alloy numbers) are produced to size within a plus and minus tolerance per the ASTM standards. For example if you order a 1" dia. brass rod the OD tolerance will be +/-.002". If you are finishing to 1.000" OD or less, you will need to order the next OD size up for example 1.125" OD. For rolled plate, for example,  1/2" thickness tolerance would be +/-.028". If you are finishing to 0.500" thickness or less you would need to order the next standard thickness up which for example may be 0.625" thick.

 

Cast Copper Alloy Bar & Plate (UNS "C" 800 & 900 series of CAST copper alloy numbers) are produced to "Nominal" sizes. This means finishing allowance already remains to finish to the published size. For example, if you order a CAST aluminum bronze bar to 3" solid dia. the actual cast size will be 3.063" (+/-.010") and will finish to 3.000" diameter or less. If you would like a clean-up and tolerance sheet for size ranges, please let us know.

 

Centrifugal Castings in CAST alloys are semi-finished with .125" finishing allowance remaining on all surfaces to finish to your requested size. With all alloys it is best that we know your actual exact finished dimensions. This way we can insure that you will receive the proper amount of clean-up allowance on your material per the ASTM standards.