"KILLED STEEL"?
"KILLED STEEL"?
(OP)
I'm looking at pipe material, inparticular A106-B & A53-B. I've been told these are identical materials only that testing process is different on materials. ...So I've been trying to look up the characteristics of each. The A106-B says it's made from "killed steel". At's OVER MY HEAD, what are they saying in layman language? THX! ...Mark





RE: "KILLED STEEL"?
RE: "KILLED STEEL"?
RE: "KILLED STEEL"?
A-53 B may be seamless or welded pipe; deoxidized, partially deoxidized or nondeoxidized - since the strong deoxidizing elements, silicon and/or aluminum, are not controlled.
The term "killed" originally referred to the appearance of the molten steel. Non deoxidized molten steels appear to boil and bubble (or act lively) as oxygen chemically reacts with the molten steel while the highly deoxidized steels appear still and quiet or "killed".
RE: "KILLED STEEL"?
RE: "KILLED STEEL"?
RE: "KILLED STEEL"?
Oxygen can also be removed exclusively by vacuum treatment of the liquid steel (to "kill" it). Without controlling the oxygen content, the mechanical properties would not be attained and alloy additions would be wasted.