Such part consolidations can result in considerable cost savings. More consistent, better metallurgical properties. Selective heating and non-uniform cooling that occur in welding can yield such undesirable metallurgical properties as inconsistent grain structure. In use, a welded seam may act as a metallurgical notch that can lead to part failure. Forgings have no internal voids that cause unexpected failure under stress or impact.
Weldments require costly inspection procedures, especially for highly stressed components.
Forgings do not. Welding and mechanical fastening require careful selection of joining materials, fastening types and sizes, and close monitoring of tightening practice - both of which increase production costs. Forging simplifies production and ensures better quality and consistency - part after part.