What is the toughest knife steel for the ultimate knife? Today was test some super tough knife making steel, S7 and 1084.


This is not a super scientific test, but I think it goest to show just how tough these steels are.

Heat treatment for s7:

Hardening Crucible Recommended

Preheat: 1350/1400F, equalize.

High Heat: 1725/1750F, hold 30/45 minutes at temperature.

I heated to 1725F wrapped in foil and held for 40 minutes.

Quench: Air, positive pressure vacuum, interrupted oil to 150F. Sections over about 3" thick may require oil quenching to attain full hardness.

I quenched in air.

Temper: 350/1000F, hold one hour per inch of thickness (two hours minimum), air cool to room temperature. Double tempering is recommended.

I tempered at 400 for 2, two hour cycles.


Heat treatment for 1084
Normalized 1600f / 1425F / 1200F
cool in still air

Heated to 1475 hold 5 minutes quench in parks 50

Temper at 440F 2x2hr






About⬇
Hi, Im Alex, im a knife maker and YouTuber, based out of southern Mars and my youtube channel is Outdoors55. This channel started as an outdoor backpacking channel, but quickly grew into a knife/ knife making channel. Everything I do on my channel is family friendly. I primarily focus on knife / knife making videos but occasionally throw in something different. Thank you for watching!

#knifemaking #knife #knifemaker #outdoors55

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