Shot Peening Media

The selection of shot peening media is specified in the industry or customer specification to which the job is processed (for example, specification AMS 2431/6 specifies the use of glass shot). For those customers that would like assistance with writing their own proprietary specification, Industrial Metal Finishing’s engineers are available to assist with shot peening media selection.

Cast Steel Shot

Cast steel shot is created by atomizing molten steel, then heat treating and sieving the resulting material.

Advantages:

  • More durable (longer life) than glass and ceramic shot 
  • Available in carbon steel and stainless steel 
  • Ability to achieve the highest intensity
  • Easiest to maintain spherical particles

Disadvantages:

  • More difficult than cut wire shot to maintain spherical particles
  • Less durable than cut wire shot
  • High material cost

Conditioned Cut Wire Shot

Cut wire shot is created by cutting drawn steel wire to lengths approximately the same size as the width of the wire. The resulting wire is then rounded to remove the sharp edges.

Advantages:

  • Produces uniform results due to its consistency in size, shape, and hardness
  • Tends to wear down into smaller diameter rather than fracture into particles with sharp edges
  • More durable (longer life) than cast steel, glass, and ceramic shot
  • Available in carbon steel and stainless steel 
  • Ability to achieve the highest intensity 
  • Easiest to maintain spherical particles

Disadvantages:

  • High material cost
  • Limited sizes

Glass Shot

Glass shot is created by atomizing molten soda lime, then sieving the resulting material.

Advantages:

  • Available in wide range of sizes 
  • Low cost material
  • Inert material, will not cause ferrous contamination or leave residue on work piece 
  • Environmentally friendly 

Disadvantages:

  • More difficult than steel media to maintain spherical particles 
  • Less durable than steel and ceramic media


Industrial Metal Finishing, Inc.'s quality system is registered to ISO 9001:2008
Industrial Metal Finishing, Inc's quality system is registered to 9001:2008.
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