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by Stuman
Tue Jul 10, 2018 6:37 am
Forum: Spyderco General Discussion
Topic: UHC - Ultra High Carbon steel sprint run
Replies: 73
Views: 7929

Re: UHC - Ultra High Carbon steel sprint run

Oh and I nearly forgot. when I put CPM MPL-1 up on the front of the forum on “CPM MPL-1 sprint run. Yes please !. I mentioned I was going to buy some of the powdered CPM MPL-1 steel and make my own canister billet which I’m also working on. It’s very demanding because I can’t let oxygen get in whils...
by Stuman
Tue Jul 10, 2018 5:45 am
Forum: Spyderco General Discussion
Topic: UHC - Ultra High Carbon steel sprint run
Replies: 73
Views: 7929

Re: UHC - Ultra High Carbon steel sprint run

Hi there MasterChiefPink. Yeah I did test it. It’s rockwell is 65.5 HRC Which is around what I expected. It’s really good steel especially for a billet steel and but it’s properties really was no surprise to me how ever I’d give anything to know exactly what it’s elemental makeup is. We all know it...
by Stuman
Mon Jul 09, 2018 5:05 pm
Forum: Spyderco General Discussion
Topic: UHC - Ultra High Carbon steel sprint run
Replies: 73
Views: 7929

Re: UHC - Ultra High Carbon steel sprint run

@Stuman Have you tested the Rockwell? Hi there MasterChiefPink. Yeah I did test it. It’s rockwell is 65.5 HRC Which is around what I expected. It’s really good steel especially for a billet steel and but it’s properties really was no surprise to me how ever I’d give anything to know exactly what it...
by Stuman
Mon Jul 09, 2018 8:57 am
Forum: Spyderco General Discussion
Topic: UHC - Ultra High Carbon steel sprint run
Replies: 73
Views: 7929

Re: UHC - Ultra High Carbon steel sprint run

@Stuman Have you tested the Rockwell? Hi there MasterChiefPink. Yeah I did test it. It’s rockwell is 65.5 HRC Which is around what I expected. It’s really good steel especially for a billet steel and but it’s properties really was no surprise to me how ever I’d give anything to know exactly what it...
by Stuman
Mon Jun 18, 2018 3:04 pm
Forum: Spyderco General Discussion
Topic: CPM MPL-1 sprint run please
Replies: 21
Views: 3183

Re: CPM MPL-1 sprint run please

That's actually what seemed interesting too. Based on the numbers you gave, ZDP-189 is still almost 75% iron. And people talk about how ZDP isn't technically a steel. That thing is close to iron not even being the main ingredient! Yeah it’s something that requires investigation but I have very limi...
by Stuman
Mon Jun 18, 2018 2:56 pm
Forum: Spyderco General Discussion
Topic: CPM MPL-1 sprint run please
Replies: 21
Views: 3183

Re: CPM MPL-1 sprint run please

It’s very similar to ZDP-189 That's actually what seemed interesting too. Based on the numbers you gave, ZDP-189 is still almost 75% iron. And people talk about how ZDP isn't technically a steel. That thing is close to iron not even being the main ingredient! Yeah it’s something that requires inves...
by Stuman
Mon Jun 18, 2018 8:39 am
Forum: Spyderco General Discussion
Topic: CPM MPL-1 sprint run please
Replies: 21
Views: 3183

Re: CPM MPL-1 sprint run please

sal wrote:
Mon Jun 18, 2018 8:02 am
Getting a sample is sometimes difficult if there is no inventory. We'll inquire.

sal
thanx Sal you just made me a happy man !
by Stuman
Mon Jun 18, 2018 7:59 am
Forum: Spyderco General Discussion
Topic: CPM MPL-1 sprint run please
Replies: 21
Views: 3183

Re: CPM MPL-1 sprint run please

It’s very similar to ZDP-189 That's actually what seemed interesting too. Based on the numbers you gave, ZDP-189 is still almost 75% iron. And people talk about how ZDP isn't technically a steel. That thing is close to iron not even being the main ingredient! Yeah it’s something that requires inves...
by Stuman
Sun Jun 17, 2018 1:58 pm
Forum: Spyderco General Discussion
Topic: CPM MPL-1 sprint run please
Replies: 21
Views: 3183

Re: CPM MPL-1 sprint run please

Taking the low end of each %, that is only 58.9% iron! Just thought that was interesting. it is a very interesting and intriguing highly alloyed metal and it has a lot of potential. That carbon and chromium as well as the other alloys could easily get this steel up to the mid 60s on the Rockwell an...
by Stuman
Sat Jun 16, 2018 10:24 am
Forum: Spyderco General Discussion
Topic: CPM MPL-1 sprint run please
Replies: 21
Views: 3183

Re: CPM MPL-1 sprint run please

The have it available for powder form Used in Cladding to low alloy steel "Cru-Clad" Mpl-1 on the outside to prevent wear with a core steel of a more ductile substrate, low alloy, non knife grade, industrial steel. Boring non knife stuff They also mentioned difficulty making Mpl-1 into bar stock. W...
by Stuman
Sat Jun 16, 2018 10:20 am
Forum: Spyderco General Discussion
Topic: CPM MPL-1 sprint run please
Replies: 21
Views: 3183

Re: CPM MPL-1 sprint run please

The have it available for powder form Used in Cladding to low alloy steel "Cru-Clad" Mpl-1 on the outside to prevent wear with a core steel of a more ductile substrate, low alloy, non knife grade, industrial steel. Boring non knife stuff They also mentioned difficulty making Mpl-1 into bar stock. W...
by Stuman
Fri Jun 15, 2018 2:52 pm
Forum: Spyderco General Discussion
Topic: CPM MPL-1 sprint run please
Replies: 21
Views: 3183

Re: CPM MPL-1 sprint run please

I was just looking at crucible steels and I came across the CPM MPL-1 Which looked very very interesting. It has one of the highest carbon contents of any steel and a whaking load of chromium which is up to 24.00% to 24.20% and is obviously to keep the 3.80% carbon in check. It reminds me of ZDP-18...
by Stuman
Fri Jun 15, 2018 2:46 pm
Forum: Spyderco General Discussion
Topic: Hap40 Question
Replies: 19
Views: 2489

Re: Hap40 Question

I received a Hap40 Delica Wharnie with a fairly wonky lamination line on one side. This will be a user and I don’t obsess over perfectly pretty lamination lines, but it makes me ask: if one were to sharpen all the way to or past the lamination line, is there Hap40 at the core throughout the entire ...
by Stuman
Fri Jun 15, 2018 2:21 pm
Forum: Spyderco General Discussion
Topic: CPM MPL-1 sprint run please
Replies: 21
Views: 3183

CPM MPL-1 sprint run please

I was just looking at crucible steels and I came across the CPM MPL-1 Which looked very very interesting. It has one of the highest carbon contents of any steel and a whaking load of chromium which is up to 24.00% to 24.20% and is obviously to keep the 3.80% carbon in check. It reminds me of ZDP-189...
by Stuman
Tue Jun 12, 2018 12:59 pm
Forum: Spyderco General Discussion
Topic: Sal SM-100 mule knife ?
Replies: 29
Views: 4403

Re: Sal SM-100 mule knife ?

Hi Sal, Thank you for the reply. The only reason I’d go to a custom knife maker is because Spyderco did not produce a knife in that steel or as you mentioned to get a customised knife but you can customise a Spyderco knife to a degree with various clips and so on but my first choice every time all o...
by Stuman
Tue Jun 12, 2018 10:05 am
Forum: Spyderco General Discussion
Topic: Sal SM-100 mule knife ?
Replies: 29
Views: 4403

Re: Sal SM-100 mule knife ?

We'll try to get a piece and make a knife with it. sal Hi Sal, Please could you let us know how you get on with it ?. I have a custom SM-100 folding knife which cost £450.00 which is around $605.00 but I’d take $100.00 off for shipping to the U.K. but there are custom knife makers making them far c...
by Stuman
Tue Jun 12, 2018 4:42 am
Forum: Spyderco General Discussion
Topic: Sal SM-100 mule knife ?
Replies: 29
Views: 4403

Re: Sal SM-100 mule knife ?

This came up some time ago and if I remember correctly Cliff Stamp chimed in claiming that while SM-100 can achieve hardness similar to blade steels that it was a quite brittle in comparison. Then there needs to be an SM-111. Is it possible for metallurgists, blade freaks, and one absolutely random...
by Stuman
Sun Mar 11, 2018 4:15 pm
Forum: Spyderco General Discussion
Topic: HAP 72 or CPM REX 121 Spydie
Replies: 44
Views: 7607

Re: HAP 72 or CPM REX 121 Spydie

I’m not an employee of Spyderco but I think the fact that they have now launched Maxamet into full production gives reason to give one the thought that they are now probably testing Rex 121 in house or may be HAP 72 because they are always pushing the limit of manufacturing tech, finding new ways to...
by Stuman
Sun Mar 04, 2018 8:46 pm
Forum: Spyderco General Discussion
Topic: (Q) should Spyderco publish there Rockwell Hardness of there knives or should they do a “MAX’ line where they harden the
Replies: 21
Views: 2775

Re: (Q) should Spyderco publish there Rockwell Hardness of there knives or should they do a “MAX’ line where they harden

Personally I own one Rockstead in YXR7 and I didn’t want ZDP 189 at a very hard harness due to edge stability issues. I’ve gave my yxr7 Rockstead a lot hard use and it still shaves and whittles hair but I really couldn’t use it to its full potential as it is a high speed steel designed to cut metal ...
by Stuman
Sun Mar 04, 2018 4:10 pm
Forum: Spyderco General Discussion
Topic: (Q) should Spyderco publish there Rockwell Hardness of there knives or should they do a “MAX’ line where they harden the
Replies: 21
Views: 2775

Re: (Q) should Spyderco publish there Rockwell Hardness of there knives or should they do a “MAX’ line where they harden

Well thanx everyone it’s just good to know these things as it makes me a more informed customer better able to make decisions based on what I need and not what I want. As far as heat treats go I think it’s based on what you are going to be doing with that blade and the requirements for the hardness ...

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