MIL-H-22072 §4.6.10 Test Panels

Test panels used in MIL-H-22072 §4.6.10 static corrosion testing. These test panels measure 1" x 3/8" x 1/16" and have a 1/4" center hole. The test method calls for panels made from different metals:
MIL-S-22698 Grade DH-36 Steel
MIL-S-22698 Grade A Steel
ASTM A108 / UNS G10200 Steel
MIL-S-18729 Condition A Steel
MIL-S-5059 Type 302 Annealed Steel
QQ-B-639 / C464 Naval Brass
QQ-B-728 Class B Manganese Bronze
QQ-C-576 Annealed Copper