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.
Speed. That's KEY.