More than just a solid core: Profiles made from high tensile steel

What has been taken away from the boom in weight has been returned in output. The clever lightweight design makes use of the material where it makes sense. For instance, aluminium is used for weight reduction in the outer boom sections of the Super-S2 boom but not in the inner boom sections. There, high tensile steel is necessary so that the boom is kept rigid and in line and so any spray errors due to movement are prevented.