Material Group 11.3 ISO/TR 15608: Carbon steels covered by Material Group 1 with higher carbon ( 0,50 ≤ C ≤ 0,85% c) and with following analysis:
Si ≤ 0,60%; Mn ≤ 1,8%; Mo ≤ 0,70%c; S ≤ 0,045%; P ≤ 0,045%; Cu ≤ 0,40%c; Ni ≤ 0,5%c; Cr ≤ 0,3%; (0,4% for castings; Nb ≤0,06%; V ≤ 0,1%c; Ti ≤0,05%;
Remarks:
c A higher value is accepted, provided Cr+Mo+Ni+Cu+V ≤ 1,00%