S30V vs. 440C vs. Titanium

G

Gunship

Joined
Jul 5, 2006
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Could someone please explain the advantages and disadvantages of these three materials and give a little hierarchy of them? I would assume Titanium>S30V>440C in terms of hardness and corrosion resistance and ability to stay sharp, as well as any other aspects I forgot? Google was not much help either and I don't know anything about hardness scales.

Somewhere I read that Ti could handle alot more torque and keep is sharpness alot longer than the other steels but I also read conflicting reports saying the opposite about its hardness.

What would also be the best price wise? I'm not going to be trudging through the rain forest or anything so somethine moderatley corrosion resistant would be in order.

Thanks alot.:D
 
Titanium is not suitable for bldes in it's most widely available form. S30V is in general superior to 440C. There are some Ti suitable for blades but they are at most rare exotic alloys.
 
440C has better corrosion resistance than S30V in terms of handling salt water. Both are high wear stainless with fairly coarse structures so are more suited to knives used for slicing abrasive materials than for fine push cutting or chopping. Both are ran at similar hardness in knives.

Beta-Ti as used by Mission is a much different material. It is much softer and weaker however is much tougher and will ignore impacts and corrosive enviroments which will destroy 440C/S30V. The edge retention in general is lower due to the hardness and wear resistance, unless the tasks and/or enviroment are demanding on toughness or corrosion.

-Cliff
 
Cliff Stamp said:
Both are high wear stainless with fairly coarse structures so are more suited to knives used for slicing abrasive materials than for fine push cutting or chopping.
-Cliff
Click to expand...

Cliff, what is in your opinion, a better stainless steel for push cutting (finer structure?). 440A? AUS-6/8? or is there such thing?
 
The Sandvik steels are optomized for exactly such use, 12c27m, 12C27, and 13C26. These are in order of increasing hardness/wear resistance and lower corrosion resistance / toughness.

-Cliff
 
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