New Mule is here! Spyderco CPM S90v Mule.

Mastiff, I don't know that the first heat on CPM S110V is all gone.......
Click to expand...

Thanks Phil.

Are you going to be getting any of the CPM S30VN/CPM S35V to try out in the future? Joe
 
Mastiff, If that is available I can probably get a small sample to play with. I got enough CPM S110v to keep me busy for a while. It makes make a great utility hunter, equal performance to CPM 125V. I have given up on 125V due to problems with blade cracking so was happy to get this one to take its place.. Phil
 
cotdt said:
S90V is not a steel.
Click to expand...
My metallurgy book says that steel has 0 <= carbon < 3%. Once you go over 3% carbon, it becomes cast iron. The book was written before the powdered technology was available, so they might be able to stretch the parameters a bit.

Over 3% and the carbon precipitates out in ribbons, which give cast iron it's great compressive strength, as the ribbons act as shock absorbers. They also give carbon it's poor tensile strength, as they are fault lines waiting to propagate cracks...
 
sodak said:
My metallurgy book says that steel has 0 <= carbon < 3%. Once you go over 3% carbon, it becomes cast iron. The book was written before the powdered technology was available, so they might be able to stretch the parameters a bit.

Over 3% and the carbon precipitates out in ribbons, which give cast iron it's great compressive strength, as the ribbons act as shock absorbers. They also give carbon it's poor tensile strength, as they are fault lines waiting to propagate cracks...
Click to expand...

According to The Steel Treatment Handbook, all steel alloys containing less than 2.11% carbon are considered steels, and more than that are considered cast iron. This definition is based on the Iron/Carbon phase diagram. It does not take into consideration carbides of other elements, but it's still the working definition that everyone uses.
 
cotdt said:
According to The Steel Treatment Handbook, all steel alloys containing less than 2.11% carbon are considered steels, and more than that are considered cast iron. This definition is based on the Iron/Carbon phase diagram. It does not take into consideration carbides of other elements, but it's still the working definition that everyone uses.
Click to expand...

Who is everyone? And why should they care about what "The Steel Treatment Handbook" states?
 
Verhoven (Big name in metallurgy of cutlery steels) uses 2.1% as the upper limit for Carbon in Steel. But I think that figure applies to melt steels and is not actually applicable to powder metallurgy steels such as ZDP-189 and S90V.
 
Book definitions supply royalties to authors. Real world function supplies income to the working class. :)

Do ZDP-189 and S90V behave like steel (of lower carbon content) or like cast iron (of higher carbon content)? Definitions can be upgraded as technology progresses.
 
cotdt said:
No, S90V has a high percentage of carbides, which are ceramics.
Click to expand...

Now where are you getting this "ceramics" information? :confused:

So you're saying that because it has a high percentage of carbides (not talking about carbon content anymore I see) it's actually cast iron. :rolleyes:
 
Esav Benyamin said:
Book definitions supply royalties to authors. Real world function supplies income to the working class. :)

Do ZDP-189 and S90V behave like steel (of lower carbon content) or like cast iron (of higher carbon content)? Definitions can be upgraded as technology progresses.
Click to expand...
Very true! On both counts. I'm sure that Crucible has "upped the ante"...
 
You must log in or register to reply here.
Back
Top