Mil-r-7575,grade a,class 2,form a mil spec 1st material response or ams 3812 assn std 2nd material response
St-22-502 mfr ref 1st material response and mil-r-7575 mil spec 2nd material response
Mil-r-7575 mil spec single material response overall
Mil-r-7575, grade a, class 0 mil spec single material response