This heat treatable, nickel bearing grade has the best corrosion resistance properties of all the straight chromium types. It has excellent tensile and torque strength, and good toughness...making it ideally suited to shafting and bold applications. Because of its high yield strength, this grade is not readily cold worked and is therefore, not recommended for use in operations such as cold heading, bending, beep drawing or spinning.

Corrision Resistance:
Excellent resistance to a wide variety of corrosive media. Good resistance to salt water in northern waters but less resistant than Type 316 in tropical waters.

Heat Resistance:
Resists scaling in intermittent wervice to 1700 degrees F and in continuous service to 1600 degrees F.

Heat Treatment:
Annealing - Heat to 1150-1225 degrees F for 12 to 24 hours and air cool. Hardening - Hardened by heating to 1800-1900 degrees F, quenching in oil and tempering to suit mechanical requirements. See accompanying table and chart.
NOTE: THE TEMPERING RANGE 800 TO 1100 DEGREES F SHOULD BE AVOIDED.

Welding:
A pre-heat of 500 degrees F is recommended prior to welding. Type 410 filler rod can be used, but Types 308, 309 or 310 will provide more ductile welds. Post-weld anneal at 1150-1225 degrees F.

Typical Applications:
Nuts and bolts
Propeller shafting
Beater Bars
Marine hardware