420V vs. S30V

[AnklePocket]

Hope I'm not asking a stupid question, but what's the difference between 420V and S30V? My 420V blade seems like a very hard, dense steel (that performs flawlessly) and I have nothing in S30V. Just wondering.

 

[Danbo]

The main differences are that 420V(S90V) is a lot higher in Vanadium and will hold an edge longer. S30V is also a little more stainless(having more chrome), and is tougher.

 

[Don Powell]

For the sake of clarity and accuracy only, Crucible's data
sheets say that S90V and S30V both have 14.00% Chromium. I
have been told that the alloy having higher Vanadium ends up
with more free Chromium for more stain resistance. S90V has more
Carbon and more Vanadium, according to this, it should be more
stain resistant.
S90V- Carbon= 2.30%
Chromium = 14.00%
Vanadium = 9.00%

S30V Carbon = 1.45%
Chromium = 14.00%
Vanadium = 4.00%

 

[Don Powell]

OOOps. Nothing like making an arsk out of one's self. My numbers
are correct, however my logic may be flawed. Because S90V has
a lot more Carbon, there may be enough Carbon left over to react
with the Chromium and thereby leaving less free Chrome. The
Vanadium does, however, have more affinity for the Carbon than the Chrome. This is a very interesting subject. Perhaps I can find the
answer to the above.

 

[Darrel Ralph]

S30 v from a blade aspect (I use both) does not hold an edge quite as good.
420v I feel is more brittle
The s30 will bend at 59-60 rc.
420v acts like a spring in bending tests.
S30 acts like 154cm or bg42 on steroids with more impact resistance.

420v is twice as tough to grind.

Darrel

 

[Epsilon]

S90V, me like.