1. Support Materials Stainless Steel SS201,SS301,SS303, SS304, SS316, SS416 etc. Steel Mild Steel, Carbon Steel, 4140, 4340, Q235, Q345B, 20#, 45# etc. Brass HPb63, HPb62, HPb61, HPb59, H59, H68, H80, H90 etc. Copper C11000,C12000,C12000, C36000 etc.