N.Gowtham Raj
Member • Dec 1, 2011
Preheating of Martensitic Stainless Steels
can martensitic stainless steels be welded without preheating?
Howdy guest!
Dear guest, you must be logged-in to participate on CrazyEngineers. We would love to have you as a
member of our community. Consider creating an
account or login.
Replies
-
Member • Dec 1, 2011
Quote
Martensitic Stainless Steels. The martensitic stainless steels are hardenable by heat treatment and are magnetic. The low-carbon type can be welded without special precautions. The types with over 0.15% carbon tend to be air hardenable and, therefore, preheat and postheat of weldments are required. A preheat temperature range of 230-290°C is recommended. Postheating should immediately follow welding and be in the range of 650-760°C, followed by slow cooling.
If preheat and postheat are not possible, an austenitic stainless steel filler metal should be used. Type 416Se is the free-machining composition and should not be welded. Welding processes that tend to increase carbon pickup are not recommended. Increased carbon content increases crack sensitivity in the weld area.
Endquote
#-Link-Snipped-#Are you sure? This action cannot be undone. -
Member • Dec 19, 2011
Thankyou very much sir... That was of great help...
By the way I would like to know a few softwares used for testing of weldment...Are you sure? This action cannot be undone.