Zirshot® Ceramic Peening Beads

Saint-Gobain ZirPro Zirshot® is the industrial reference media for ceramic shot peening, enhancing the fatigue resistance of mechanical parts made of metallic alloys such as hard steel, titanium and aluminum. In shot forming, Zirshot also is used to shape and straighten slim hard alloys for aerospace structural components. 

Zirshot combines the high hardness (700HV) and toughness of ceramic materials with optimal spherical bead shape and tight size distribution, resulting in outstanding peening benefits:

  • High energy transfer at the impact point on the metallic substrate
  • Preservation of the integrity of the peened surface with smooth and uniform surface finish
Chemical Composition (wt%) ZrO2 SiO2 AIO2
60 - 70 28 - 33 <10
Specific Gravity (g/cm3) 3.8
Bulk Density (kg/L) 2.3
Vickers Hardness (HV1) 700
Available Sizes Name µm Name µm
Z850 850 - 1180 Z210 210 - 300
Z600 600 - 850 Z150 150 - 210
Z425 425 - 600 Z100 100 - 150
Z300 300 - 425    



Superior Peening performance 

Peening with Zirshot ceramic shots offers:

  • High level of compressive stress near the surface
  • Smooth surface finish that minimizes crack initiation
  • Very low material abrasion that maintains accuracy of fine geometries
  • High rebound that allows homogeneous coverage of intricate geometries
  • Very low levels of particle embedment
  • No need for decontamination post-treatments for non-ferrous alloys
  • Cost savings on the downstream processes (coating, polishing)
Peening Aluminium
Shot Peening bis

Guaranteed quality and versatility

Because quality of the peening media is a critical parameter that directly impacts the service life of treated components, ZirPro manufactures shot peening media using tightly controlled procedures and specifications, enabling Zirshot to conform to the most stringent aerospace and automotive ceramic shot peening standards.