Tool Steels Lescalloy UT-19 (tm)

Gears, pinions, shafts and a variety of other carburized parts.

Heat through to 2050-2100 F and continue forging through 1700 F, but not below. Air cool.

Austenitize at 1510-1560 F 45-90 minutes, oil quench to below 200 F and air cool to room temperature.

Normalize and temper 1750 F for 1 hour/ inch, air cool to room temperature. Maximum hardness: 277 BHN. Carburize at 1700 F for required case depth. Furnace cool at 1400 F in a carburizing atmosphere and air cool to room temperature. If required, temper for best machinability. At the surface, carbon should be .7-.9% and .4% or greater at the required case depth.

A premium quality carburizing grade with high hardenability and excellent cleanliness due to its Vacuum Arc melting.

One hour minimum to desired case hardness, then air cool. If necessary, stabilize at -110F for 30 minutes and re-temper as instructed above.