ASTM International
![ASTM HQ in West Conshohocken, PA, as seen from a nearby bridge](/Images/godic/202412/20/Astm_hq_west_conshohocken_0195056.png")
ASTM International is an international standards organization that develops and publishes voluntary consensus technical standards for a wide range of materials, products, systems, and services. Some 12,575 ASTM voluntary consensus standards operate globally. The organization's headquarters is in West Conshohocken, Pennsylvania, about 5 mi (8.0 km) northwest of Philadelphia.