Chemistry composition:Gu:0.20 Mg:0.05 Mn:1.0-1.6 Fe:0.7 Si:0.6 Zn:0.1 Standards:10*1,10*2.5,12*1.5,13.5*3.25,16*0.9,16*1.5,18*2,20*2,22*1,24.2*6,28*19,30*5,30*7.5,35*17,35*5,38*3,40*12.5,45*3.5,45*12.5,45*30,50*6,50*12,50*2,51.5*2,53*45,55*12,57*2.5,60*3,60*5,60*38,63*4,63.5*1.75,65*6,73*5.5....