Mil-s-7720,comp 303s or 303se,cond bc mil spec single material response overall
Mil-s-7720 mil spec single material response
Mil-s-7720 cond b mil spec all material responses overall
Mil-s-7720 mil spec 1st material response overall or qq-s-763 fed spec 1st material response overall or astm a582 assn std 2nd material response overall
Mil-s-7720,comp 303 or 303se,cond bc mil spec single material response overall