ASTM Standards This link opens in a new windowASTM Standards are defined and set by ASTM International, formerly known as American Society for Testing and Materials. This resource provides instant access to the current digital edition of the Annual Book of ASTM Standards. Include test methods, specifications, accepted practice, and accepted terminology for materials, products, systems and services. ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence.