Durability Comparison

Author:  Bob Gillespie, Premier Shot Company
Source:  The Shot Peener magazine, Vol 03/Issue 2, Summer 1989
Doc ID:  1989073
Year of Publication:  1989
Abstract:  
INTRODUCTION This report is part of a study of steel shot peening media. The intent of the study is to determine the best media available for use in applications where high quality and high reliability shot peening is required. The first phase of this study involves the comparison of the durability of cast steel shot versus wrought steel shot of the same hardness and general size. Typically, cast materials are subject to normal casting defects such as hot tears, cold cracks, residual stresses, porosity, shrinkage and inclusions. Wrought materials, because they are hot and/or coldworked, have a more sound and homogeneous internal structure. One would, therefore, expect wrought shot peening media to last longer than cast media.