Heat Treating Information

1018 Cold Finished:
Carburize at 1650°F-1700°F for 8 hours
Box Cool
Reheat at 1400°F-1450°F
Water quench and draw at 300°F-350°F

4140/42 Alloy:
Normalize at 1600°F-1700°F, air cool. Average Brinell Hardness 285.
Anneal at 1450°F-1550°F, slowly cool in furnace. Average Brinell Hardness 187.
Hardening at 1525°F-1625°F, oil quench. Temper between 400°F-1300°F to desired hardness.

8620 Alloy:
Normalize at 1650°F-1750°F, air cool. Average Brinell Hardness 187.
Anneal at 1550°F-1600°F, slowly cool in furnace. Average Brinell Hardness 156.
Carburize at 1650°F-1700°F for 8 hours, oil quench. Temper between 300°F-450°F.

T410 Stainless:
Anneal at 1550°F-1650°F, slowly cool in furnace.
Hardening at 1750°F-1850°F, oil quench. Temper to desired hardness.

T440-C Stainless:
Anneal at 1550°F-1650°F, slowly cool in furnace.
Hardening at 1850°F-1950°F, oil quench. Temper to desired hardness.

Tool Steels:

Grade
Hardening Temp.
Quench
Tempering Temp.
Hardness
A2 1700°F-1800°F Air 350°F-1000°F 57-62 Rc
D2 1800°F-1875°F Air 400°F-1000°F 54-61 Rc
H13 1825°F-1900°F Air 1000°F-1200°F 38-53 Rc
O1 1450°F-1500°F Oil 350°F-500°F 57-62 Rc
M2 2175°F-2250°F Air,Oil or Salt Bath 350°F-1000°F 60-65 Rc
M42 2125°F-2175°F Air,Oil or Salt Bath 950°F-1100°F 65-70 Rc
S7 1700°F-1750°F Air or Oil 400°F-1150°F 45-57 Rc



This data is for informational purposes only and based upon generally accepted industry standards and are not guaranteed to be accurate.