استحکام و دوام بادوام astm a479
ASTM A479. ASTM A479/ASME SA479. Standard Specification for Stainless Steel Bars and Shapes for Use in Boilers and Other Pressure Vessels. Austenitic. UNS N08367. UNS S20161. UNS S20910. UNS S21600. UNS S21603. UNS S30600.