Is cpm 3v if heat treated right as tough as 5160

Larrin said:
If the reported composition is used as Infi it is perfectly acceptable to call it A8 mod since it is A8 mod.
Click to expand...
If they are chemically the same I would agree.
Must be their heat treat process. Kinda like how Delta 3V is only available for a couple makers.
 
Larrin said:
Almost all steels have some small amount of manganese in them. Sometimes it isn't listed in the composition, such as most of the Crucible steel datasheets.
Click to expand...
Crucible makes a8 mod or infi?
 
Larrin said:
I didn't say that Crucible makes A8 mod or Infi.
Click to expand...
Then what was your point in bringing up crucible?

The analysis of infi didn't show any manganese. But I guess that doesn't matter.

I'm curious what is the tolerance for each element in A8 mod?
 
shinyedges said:
Yes, it's composition changed. For all we know it's changed again and is completely different, but it's a8 mod :thumbsup:
Click to expand...
For that it would be good to line up more details for when it was that material.

Otherwise we're just trying to pin a tail on a moving donkey and if we say it's definately XXX someone else is sure to find a new or older version and argue over it being YYY.
 
What's the tolerance for each element in A8 mod? Does going outside of those tolerances make it different? How different?

I'd love to know, because from my limited understanding the changes are significant enough to make the steel vary from batch to batch even when the elements are WITHIN the tolerance. Going outside the tolerance of the elements?
 
Danke42 said:
For that it would be good to line up more details for when it was that material.

Otherwise we're just trying to pin a tail on a moving donkey and if we say it's definately XXX someone else is sure to find a new or older version and argue over it being YYY.
Click to expand...
That's what I'm saying, saying infi is A8 mod is a guess at best, it currently might not be even close. If the years old analysis of infi is still accurate, it has similar properties to A8 mod but isn't identical. From what I gather, small changes in elements make big differences in steels behavior. But hey, I'm just a regular knife nut.
 
shinyedges said:
That's what I'm saying, saying infi is A8 mod is a guess at best, it currently might not be even close. If the years old analysis of infi is still accurate, it has similar properties to A8 mod but isn't identical. From what I gather, small changes in elements make big differences in steels behavior. But hey, I'm just a regular knife nut.
Click to expand...
Me too!. I just think if we're splitting hairs we should be sure to be specific.

It may be that all Infi is one alloy over it's evolution and it's good to call it all A8 as more of the change relates to the heat treat vs. the steel.
 
Danke42 said:
Me too!. I just think if we're splitting hairs we should be sure to be specific.

It may be that all Infi is one alloy over it's evolution and it's good to call it all A8 as more of the change relates to the heat treat vs. the steel.
Click to expand...
Could be.. only Jerry busse and his steel supplier know for sure what his knives are currently made of.

I like to get down to the knitty gritty too, if someone makes a claim that infi is A8 mod I sure want to know how the difference in elements between busses last known infi composition makes the steel behave than A8 mod.

I may not be a metallurgist but I do know changes in quantities of elements make the steel behave differently.
 
Screenshot_20181022-140746_Samsung Internet.jpg Screenshot_20181022-140723_Samsung Internet.jpg


This is 1050 and 1060 steel. The same elemental make up. Yet they are two different steels and exhibit different properties, enough so, they are named different. If steels were lumped together and named the same because they are similar in make up these two wouldn't be different steels.
 
Sure it really gets to be like the leaves on a tree vs. the trunk it's all oak but it's not the same as it starts to branch out.

Then not even starting that fight about what "toughness" means in the context of steel. For some users toughness is a very specific term while for others it's blanket that covers everything about a knife.
 
shinyedges said:
View attachment 1007824 View attachment 1007825


This is 1050 and 1060 steel. The same elemental make up. Yet they are two different steels and exhibit different properties, enough so, they are named different. If steels were lumped together and named the same because they are similar in make up these two wouldn't be different steels.
Click to expand...
The difference in this case is in the amount of carbon. All AISI 10XX steels are plain carbon steels with a max Mn content of 1%.
 
Danke42 said:
Sure it really gets to be like the leaves on a tree vs. the trunk it's all oak but it's not the same as it starts to branch out.

Then not even starting that fight about what "toughness" means in the context of steel. For some users toughness is a very specific term while for others it's blanket that covers everything about a knife.
Click to expand...
I suppose they could have stopped identifying trees beyond leaf shape, but they broke it down into further sub species. Which is similar to steels, if a difference is enough it is it's own steel.

Surely a dendrologist would identify two similar trees as to what they are. Lumping them as the same seems like a good way to be corrected.
 
danbot said:
The difference in this case is in the amount of carbon. All AISI 10XX steels are plain carbon steels with a max Mn content of 1%.
Click to expand...
Yes Dan I know that. They behave differently despite being close in element make up.
 
You must log in or register to reply here.
Back
Top