Plate quenching thin 52100?

[Taqtaq]

Having read Larrin’s latest piece on knifesteelnerds, I was surprised to see the cct chart for 52100 and the 20 second window for quenching. My question is, do you figure a plate quench on .058 52100 is fast enough to achieve full hardness from a 1525 austenizing temp?

 

[Kevin McGovern]

A year ago, I would have said no. Now, I say yes.

 

[Larrin]

52100 has significantly less hardenability than O1 or O2, and those oil hardening steels are borderline for plate quenching.

 

[DevinT]

Having read Larrin’s latest piece on knifesteelnerds, I was surprised to see the cct chart for 52100 and the 20 second window for quenching. My question is, do you figure a plate quench on .058 52100 is fast enough to achieve full hardness from a 1525 austenizing temp?

I wouldn’t do it, even if you achieve full hardness, a faster quench might be better for 52100.

Hoss

 

[Taqtaq]

I wouldn’t do it, even if you achieve full hardness, a faster quench might be better for 52100.

Hoss

Care to elaborate? Less RA or am I missing something else?

I am working on some headknives and have a sheet of 52100 specifically for it. What I am nervous about is warping on such small pieces.

 

[Willie71]

https://www.bladeforums.com/threads/how-fast-do-you-have-to-quench-hardenability-of-steel.1645480/