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copper test coupon for MIL-PRF-372 abrasive cleaning test

MIL-PRF-372 §4.5.3 Copper Test Coupons

Copper test coupons used in testing by military specification MIL-PRF-372 §4.5.3 (Abrasive Cleaning or Copper Removal test). This test uses three test coupons. Each copper test coupon is 1.5" x 1.5" x 1/32". The test coupons are cleaned but not polished. Each test coupon is individually packaged and lot traceable to the original material.
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