ASTM A815/A815M-23 pdf free download - Standard Specification For Wrought Ferritic, Ferritic/Austenitic, And Martensitic Stainless Steel Piping Fittings. This specification ASTM A815/A815M-23 covers two general classes, WP and CR, of wrought ferritic, ferritic/austenitic, and martensitic stainless steel...