ASME SB 443 UNS 06625 should be austenitic and suitable for machining. These tubes are recommended by Inconel plate suppliers due to their exceptional toughness and exhaustion strength. It is stated that SB 443 UNS N06625 is impervious to cleft disintegration and pitting. Similar conflicts can arise between impingement deterioration and intergranular attacks in ASTM B443 UNS N06625. A... https://www.shasanpiping.com/inconel-625-sheets-and-plates-manufacturers-exporters-suppliers-stockists.html