American Society for Testing and Materials (ASTM). Current edition approved Oct. 1, 2008. Published October 2008. 7 р. This specification covers hot-finished or cold-finished bars except bars for reforging . It includes rounds, squares, and hexagons, and hot-rolled or extruded shapes, such as angles, tees, and channels in the more commonly used types of stainless steels. The free-machining types for general corrosion resistance and high-temperature service are covered in a separate specification.