... 6150 spring steel 1. Spring flat steel 2.Material: 65Mn, 60Si2Mn, SUP9, SUP7, SUP11,50CrVA 3. Size: 6*40~20*15 aisi 6150 spring steel 1 ... . Material: 65Mn, 60Si2Mn, SUP9, SUP9a, SUP7, SUP11, 50CrVA ... for car and agriculture machines. Anchor plate. Laminated leaf spring.6. Package: Standard export packing. Coverd by PP ... 10-0.200.0300.030 aisi 6150 spring steel