Milling Description Series Page GRADES GOLD•RUSH grades for steelapplications10 12S1X, 12S1E 12 1KJ1_, 1KJ1_ (TopOn), KJ 16 1DJ1F, 1DJ1P,1DJ1F, 1DJ1P (TopOn), DJ20 25J3P 24 DJ6T, DJ5T 26 ON5H, ON6H, OP6N 28 1DG1H, 1DG1H (TopOn), DG6H 36 1TG1F, 1TG1F (TopOn), TG1F 40 15M1P, 15M1PF (TopOn),5M_P, 5G_M 44 QHU, 5J1P 50 DD6H 52 2