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.