High-Hardness Shot Material for Shot Peening and Shot Peening Method

Author:  Toshiyuki Sawada
Source:  US Patent 9,458,529
Doc ID:  2016051
Year of Publication:  2016
Abstract:  
A high hardness, high toughness and inexpensive shot material for shot peening is provided. The high-hardness shot material for shot peening comprises, in mass %, 5 to 8% of B; 0.05 to 1% of C; 0 to 25% of Cr; balance Fe and inevitable impurities. B and C are contained in a total amount of 8.5% or less.