This is the basic grade in the group of 400 Series alloys that can be hardened by heat treatment. It, and its companion grade, Type 403, contain a minimum of 11.5 per cent chromium... just sufficient to give them corrosion resistance properties. both achieve maximum corrosion resistance when they have been hardened and then polished. While Type 403 is designed for a specific field of applications, Type 410 is a general purplse grade often supplied in the hardened, but still machinable condition for applications where high strength and moderate heat and corrision resistance are required.

Corrision Resistance:
Resists dry atmosphere, fresh water, mild alkalies and acids, steam and hot gasses. Must be hardened for maximum heat and corrosion resistance. Less corrosion resistant than 300 Series grades and ferritic 400 Series alloys such as Type 430.

Heat Resistance:
Good resistance to scaling in intermittent service to 1500 degrees F and in continuous service to 1300 degrees F.

Heat Treatment:
Hardened by heating to 1700-1850 degrees F, quenching in oil or air and tempering to obtain a wide variety of hardness values and mechanical properties as indicated in the accompanying table and graph. NOTE: THE TEMPERING RANGE 750 TO 1075 DEGREES F SHOULD BE AVOIDED.

Welding:
Readily welded by all standard methods... but a pre-heat of 300-500 degrees F and post-weld annealing treatment is required to reduce the possibility of cracking. Use Type 410 welding rod if post hardening and tempering is involved. If parts are to be used in the "as welded" contition, a ductile joint can be achieved ty using Type 308 or 309 filler rod.

Typical Applications:
Bolds, nuts, screws
Bushings
Pump parts and shafts
Petroleum fractioning towers
Mine ladder rungs
Valves