Type 430 are low carbon ferritic stainless steels which, in mildly corrosive environments or atmospheric exposures, have corrosion resistance approaching that of some nickel stainless steels. These alloys are oxidation resistant at elevated temperatures. Types 430 and 434 are ductile, do not work harden readily, and can be formed using a variety of roll forming or mild stretch bending operations as well as the more common drawing and bending processes.
Machining
Types 430 should be machined at speeds about 60% of those used for a similar operation on reference type B1112. Your Allegheny Ludlum representative will furnish information on free-machining modifications of these alloys.