Strength to Weight: Axial. Strength to Weight: Bending. Thermal Diffusivity. Thermal Shock Resistance. How are the material properties defined? How does it compare to other metal alloys? Davis editor , Not Bookmarked Bookmarked. S2 is harder but that makes it more likely to shatter.
The Anytime looks like a HF screwdriver. So it might be the same bits in their bit set I'd take the Temo over Tekton but the Tekton has precision micro bits too and is cheaper. The nylon pry tool in the Tekton set is useless, you'd want to replace that I don't know how they messed that up, last time I bought a pack of 10 of those for a couple bucks shipped from China. The Tekton set is nice but the case is rather large to be in a bag and the drivers kinda suck.
I'd suggest taking a look at bits made by Vega. I don't have a link but they're pretty easy to find. The hardware store I work for took my advice and started carrying them. Nothing but compliments. I like the S2 better than the standard CV bits for non-shrapnel inducing applications.
They just hold up better IMO. They run a little more, but you'll notice the difference, especially on the Phillips bits. I am also looking for some decent screwdrivers. Chrome vanadium.
I buy something here and there, but they don't last five minutes nowadays, especially with shorter screws. Maybe they are getting harder! Here in the UK, we can't seem to get anything harder than C. Hardness and toughness, while inversely related, are inversely related within a given composition of steel.
They can obtain optimum hardness at higher austenitizing temperatures. The tempering resistance of group S steels can be enhanced by the addition of silicon, which also forms a microstructure to resist distortion in tempered conditions. The following section will give an overview of S2 shock-resisting tool steels. This is followed by holding the steels for 10 to 20 mins and quenching in brine or water.
Shock resisting steels are designed to have high impact resistance toughness , along with other properties such as strength, hardness. Silicon is a common addition to this class of steels, as it provides tempering resistance, and increases toughness.
Applications for shock resisting steels includes springs, as well as chisels, dies for forging, and punches. They are also used for screwdrivers and driver bits. Because the chemical compositions of S2 and S7 tool steel are similar, they respond similarly to most applications. For example, they are both hard to grind when compared to steel. Do not forge below F. See "Forging". The alloy may be readily cold worked in the annealed condition.
Anneal at F and slow cool in the furnace at a rate not exceeding 40 F per hour. Not applicable to this alloy.
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