ASTM SEDL (Standards & Engineering Digital Library)
ASTM, formerly known as the American Society for Testing and Materials, is a globally recognized leader in the development and delivery of international voluntary consensus standards. SEDL includes 12,200 active ASTM standards used around the world to improve product quality, enhance safety, facilitate market access & trade, & build consumer confidence. Also, there are 28,500 historical & withdrawn standards, plus 12,300 Redlined Standards (PDF documents that provide change marks to compare changes between an active standard & the prior version) included where revisions were made. There are nearly 100 categories of standards with the largest number in the categories of Construction, Metals, Paint & Related Coatings, Petroleum, Plastics, Environmental, Rubber, Steel, Textiles, & Electronics; new areas that reflect 3D Imaging standards, Additive Manufacturing & Medical Device Standards.