5/2/2024 0 Comments Sandpape grit conversion chart![]() If anyone has the document, could they please post it to ? Metals & Metallurgy section. But evidently there is an ongoing need for this information. This thread is quite old, and Andrew Provan is no longer reachable. I am still trying to locate a copy of that chart though and any help you can provide will be greatly appreciated. I just figured that since it was so old that maybe things had changed. When I emailed I got an error screen that said the email doesn't exist. Are you implying that the posted e-mail address now bounces, or he asked you to stop bothering him? He is on Linked-In, and apparently is currently with, but I don't want to contact him or have others contact him if he requested that people desist :-) The implication of your posting is a bit vague. Can you tell me what sandpaper grit I should use (I'll do it by hand). Sandpaper Grit Ranges Sandpaper grit ranges can be divided into two types: micro and macro grit sandpapers. If there is a P in front of the grit number, for example, P300, then you know it follows the FEPA grading system. Sandpaper is labeled on the back with the grit size. This is the standard commercial polish for sapphire, although I recommend going another step to 50,000. CAMI is used mainly in North America and FEPA in Europe. 50,000 grit is more common and used for polishing sapphire and other hard materials. Mainly for contest cutting or hobby cutters. I am trying to achieve a 32 surface finish on aluminum 6061-T6 block. Very fine and not used often commercially. What is 35RA polish finish for stainless steel T-316 ss? Alex Roman What is the surface roughness achieved by using 320 and 400 grit abrasive belts on steel and chrome? Amol Nanavati Standard Sandpaper & Whetstone Grit Sizes Range of Belts Correspond Chart. Also, they can remove almost anything so don’t. Essentially, you’ll use these to soften anything that’s too rough for your hands to handle. They’re only required for cleaning up rough lumber, evening out large bumps in the wood, & removing stubborn old paints. There are following correlations between Ra and Rz depending on the processing method:įor polishing: Rz = 4Ra. Surface finish sandpaper grit chart Upmold collected these data for your reference for plastic injection mold quality of surface polishing, how to control or inspect the polishing quality of molds, also you can download it. Grit Levels P40 & P60 Most projects won’t need these sandpaper grades. On a base length one can find 5 profile maximums (highest lugs) and 5 profile minimums (deepest cavities). ![]() Parameters and characteristics".įollowing this standard, Rz is the height of roughness by ten points. This one is typical for old designs based on GOST 2789-73 "Surface roughness. ![]() Have you already found the information about Rz parameter?
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