Metal Finishing Guide Book

2013

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49 Spherical Cleaning, finishing peening—light-medium and deburring Glass Beads None <1 5.5 Specific gravity Free silica content, % Free iron content, % Hardness (Moh) High Fast None Rough anchor High Low High 8-200 U.S. mesh High Low/none High High Range (various matte) None High High 20-325 U.S. mesh Low Toxicity Metal removal Cleaning rate Peening ability Finish achieved Surface contamination Suitability for wet blasting Suitability for dry blasting Size ranges available Consumption rate High 7.5 <1 100 2.4-2.7 Tan Granular General cleaning where metal removal and surface contamination are not considered Coarse Abrasives (e.g., sand) None 2.45-2.50 Color Media Comparisons: Clear Shape Physical Properties: Applications: Table I. Impact Media Comparison Chart High 6-200 U.S. mesh Low High/medium Medium/high High Peened (shot): rough anchor (grit) High/medium Low None 7.5 95-100 None 7.6-7.8 Gray Spherical/irregular Rough general cleaning and high intensity peening Metallic Abrasives (e.g., steel and iron shot/grit) High 80-325 U.S. mesh High High Fast None Various matte High Low Low 9.0 <1 <1 2.4-4.0 Brown/white Angular Cleaning where smooth finish and surface contamination are not important Fine Angular Abrasives (e.g., aluminum oxide) High 60-325 U.S. mesh High None Slow None Smooth Medium/high Low Low/none 1.0 None None 1.3-1.4 Brown/tan Irregular Light deburring and cleaning of fragile items Organic Abrasives (e.g., walnut shells)

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