Custom vs Factory Knives: Testing the heat treatments Media

I have a bunch of data to share comparing heat treatments in a small custom shop vs a large commercial heat treating facility.

Written version of this information: https://knifesteelnerds.com/2025/03/24/factory-vs-custom-heat-treating-of-knives/

52100 heat treating: https://knifesteelnerds.com/2019/05/13/how-to-heat-treat-52100/
80CrV2 heat treating: https://knifesteelnerds.com/2022/06/23/how-to-heat-treat-80crv2/
Annealing stainless: https://knifesteelnerds.com/2024/07/05/how-to-anneal-stainless-steel-after-forging/
AEB-L heat treating: https://knifesteelnerds.com/2019/03/04/all-about-aeb-l/
CPM-CruWear heat treating: https://knifesteelnerds.com/2018/06/04/toughness-testing-cru-wear-z-wear/
What a Good Heat Treatment Can and Cannot Do: https://knifesteelnerds.com/2019/07/01/what-a-good-heat-treatment-can-and-cannot-do/
Salt pots: https://knifesteelnerds.com/2024/08/05/rapid-heat-treating-with-salt-pots/
CruForgeV heat treating: https://knifesteelnerds.com/2018/03/26/cru-forge-v-toughness-testing-processing-and-background/
How to Heat Treat with a Forge: https://knifesteelnerds.com/2021/09/23/how-to-heat-treat-knife-steel-in-a-forge/
CPM-S110V: https://knifesteelnerds.com/2020/11/23/cpm-s110v-steel-history-and-properties/

00:00 Intro
00:32 The Steps
08:32 Hardness and Toughness
12:16 Thermal Cycling
15:52 When Custom is Worse
21:05 Edge Retention
28:22 Sharpening and Retained Austenite
34:32 Corrosion Resistance
36:27 Heat Treating Knowledge
38:23 Differential Heat Treatments
39:16 Summary