钢铁砂G25

GP:Angular when new, this grit rapidly rounds off in use and its particularly suited descaling applications.GL:Although harder then GP steel grit, also loses its sharp edges during shto basting and is particularly suited to descaling and surface preparation applications.GH:Having maximum hardness, GH always remains angular in its operating mix. These abrasive are particularly effective in surface treatment processes and produce a uniform, etched finish, GH angular grit should only be used in wheel machines where working requirements take precedence over cost price considerations (for example with rolling mill cylinders or when a special finish is needed). For use mainly with compressed air equipment. Main Tech Specifications of Steel Shot and Steel Grit Index Chemical Compostions Steel shot Steel grit C 0.95 0.95Mn 0.67 0.67Si 0.49 0.49S 0.03 0.03P 0.034 0.034Salt (alkaline substances) 38PPM 38PPMhardness 40HRC 40HRCMetallographical struucture Even tempered martensite Even tempered martensite Min density 7.4 g/cm³ 7.4g/cm³