1) Unterlegscheiben Menge: 56000 Outer Dia: 50mm Inner Dia: 25mm Thickness: 04mm 2) Unterlegscheiben Menge: 56000 Outer Dia: 50mm Inner Dia: 20mm Thickness: 3.50mm The chemical composition of steel for above items should be as under: C% Si% Mn% P% S% Cr% Mo% Ni% Al% 0.0101 0.0417 0.3433 0.0384 0.0102 0.0237 0.0244 0.0291 0.0676 Co% Cu% Nb% Ti% W% Pb% Sn% B% Fe% 0.0051 0.0173 0.0531 0.0229 <0.0050 0.0038 0.0081 .0003 99.30