Quick answer: Use steel shot when you need rounded impact for cleaning or peening; use steel grit when you need sharper cutting action for aggressive rust removal and deeper surface profiles.
What is the main difference?
Shape drives performance. Steel shot is spherical, so it peens and cleans with controlled impact. Steel grit is angular, so it digs in and removes material faster.
When should you choose steel shot?
Choose steel shot for shot peening, general cleaning, descaling with less aggressive etching, and applications where media life and recyclability matter. Grades like S230–S550 are common in production blast rooms.
When should you choose steel grit?
Choose steel grit for heavy rust, thick coatings, and when a stronger anchor profile is required before painting. It wears machine parts faster than shot, so equipment compatibility matters.
Can you mix shot and grit?
Some plants blend media for a balance of cleaning speed and finish, but most production lines standardize one media family for stable results and simpler inventory. Test on sample parts before changing a live process.
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