ASTM International (ASTM), originally known as the American Society for Testing and Materials,'s an international standards organization that develops and publishes voluntary consensus technical standards for a wide range of materials, products, systems, and services. The organization's headquarters's in West Conshohocken, Pennsylvania, about 5 miles northwest of Philadelphia. ASTM predates other standards organizations such as BSI (1901), DIN (1917) and AFNOR (1926), but differs from these in… (More on Astm)