Lette OLD DiSTROYER \ Sims Class Gridley Class DD 410, 411, 413, 419 have H.7T.S. Hulls Fe Medium Steel H.T.S. C.R.S. isc. Alloy Steel Ni, Cr, Mn, 8, P, Si & C of the 1,014 tons steel are included below Al 152,000 Mg 2,280 " Cu 340,000 4 Na 47,000 " Cr 255600 " 150 ui Mo 1,771 Va 480 Zn 22,000 Pb 14,165 Sn 13,000 Sb J,22! in 17,920 Ca 369 lbs. 1,120 1,120 Si 10,100 6,720 Be 2 Co 199 Cb Ti Bi 424 4