ASTM ASTM B568-98(2014) - August 15, 2019 - admin Click here to purchase 1.1 This test method covers the use of X-ray spectrometry to determine thickness of metallic and some nonmetallic coatings. Product Details Published: 05/01/2014 Number of Pages: 8 File Size: 1 file , 120 KB Post navigation ASTM B569-04ASTM B568-98(2009)