Spyderco Forums

sal wrote: ↑

Wed Sep 03, 2025 11:09 am

Sterling454 wrote: ↑

Sun Aug 31, 2025 5:30 pm

sal wrote: ↑

Sat Aug 30, 2025 3:51 pm

Makunochimaster wrote: ↑

Sat Aug 30, 2025 3:32 am

when will we know the composition of this steel ?

We removed the composition of the steel from the website. Larrin said that; 1) our listing did not include all of the elements, and 2) We should wait to list the composition of the steel until a formal listing in published publicly.

sal

Sal, does that mean you would prefer that I not share the composition contained in the insert included with my MT46P?

Hi Sterling,

That is correct. Larrin said that the chemical composition listed earlier was not correct. We've been asked to remove the listings until we can get the correct formula from Larrin.

sal

Sterling454 wrote: ↑

Wed Sep 03, 2025 6:31 pm

sal wrote: ↑

Wed Sep 03, 2025 11:09 am

Sterling454 wrote: ↑

Sun Aug 31, 2025 5:30 pm

sal wrote: ↑

Sat Aug 30, 2025 3:51 pm

We removed the composition of the steel from the website. Larrin said that; 1) our listing did not include all of the elements, and 2) We should wait to list the composition of the steel until a formal listing in published publicly.

sal

Sal, does that mean you would prefer that I not share the composition contained in the insert included with my MT46P?

Hi Sterling,

That is correct. Larrin said that the chemical composition listed earlier was not correct. We've been asked to remove the listings until we can get the correct formula from Larrin.

sal

Thank you the confirmation, I'll keep it to myself.

Larrin wrote: ↑

Thu Sep 04, 2025 10:01 am

Crucible produced two heats of MagnaMax. Spyderco used the second for the "MagnaMax" mule. The more limited "Proto X" mule used the first heat. There were some small modifications attempted between the first and the second. These were prototype heats for analysis to determine if the steel hit the property targets, and the remaining steel was sold to those willing to experiment with it.

There will be minor differences in composition between the Crucible heats and the final material made at other mills, though there are also minor differences between any two heats made by the same company.

Evil D wrote: ↑

Thu Sep 04, 2025 11:40 am

@Larrin Correct me if I'm wrong here but wasn't there a hardness difference between the MagnaCut Mule and the later production folders? Or was it even after the folder production started?

Larrin wrote: ↑

Thu Sep 04, 2025 10:01 am

Crucible produced two heats of MagnaMax. Spyderco used the second for the "MagnaMax" mule. The more limited "Proto X" mule used the first heat. There were some small modifications attempted between the first and the second. These were prototype heats for analysis to determine if the steel hit the property targets, and the remaining steel was sold to those willing to experiment with it.

There will be minor differences in composition between the Crucible heats and the final material made at other mills, though there are also minor differences between any two heats made by the same company.

Emerson wrote: ↑

Thu Sep 04, 2025 12:19 pm

@Larrin , is the composition listed on the paperwork with the magnamax mule correct? If not, can you tell us the specific differences?

sage047 wrote: ↑

Thu Sep 04, 2025 2:33 pm

Anyone have any stats on the HRC of these? Given the info released by Larrin so far, I'd be interested to know what it is. looks like 2nd batch has the potential to dominate the charts if at the right HRC, at the cost of a little corrosion resistance.
3 days daily use now. Looks like when I got it, granted, it's just been a cardboard destroyer.

Larrin wrote: ↑

Thu Sep 04, 2025 10:01 am

Crucible produced two heats of MagnaMax. Spyderco used the second for the "MagnaMax" mule. The more limited "Proto X" mule used the first heat. There were some small modifications attempted between the first and the second. These were prototype heats for analysis to determine if the steel hit the property targets, and the remaining steel was sold to those willing to experiment with it.

There will be minor differences in composition between the Crucible heats and the final material made at other mills, though there are also minor differences between any two heats made by the same company.

weeping minora wrote: ↑

Sat Sep 06, 2025 11:57 am

Thanks Larrin. My reading on this seems to lead me to believe that the second "MagnaMax" heat for this Mule release was unintentionally quite a bit further out of compositional specification within the tolerances that were aimed for. Is this so, and why the composition has been redacted?

*Edited for clarity.

sage047 wrote: ↑

Mon Sep 08, 2025 5:41 pm

weeping minora wrote: ↑

Sat Sep 06, 2025 11:57 am

Thanks Larrin. My reading on this seems to lead me to believe that the second "MagnaMax" heat for this Mule release was unintentionally quite a bit further out of compositional specification within the tolerances that were aimed for. Is this so, and why the composition has been redacted?

*Edited for clarity.

Larrin has stated elsewhere that Magnamax heat 2 was out of spec for the steel. Instead of the additional chromium requested, there's +0.25% more carbon. Seemingly resulting in higher toughness at equivalent hardness than heat 1, and higher hardness at equivalent austenitizing temps (@2200f heat 1 hit approx 64.5 HRC and heat 2 hits just over 66HRC). At 64.2 ish HRC heat 1 hits approx 6t-lbs toughness and heat 2 hits 7.7ft-lbs ish. I'm eyeballing them where there's a decimal though. and Larrin also estimated the corrosion resistance to be in the range of M390, S45Vn and Elmax which was less than what he was going for. Further info is on the patreon it seems, but I'm going on what has been said publicly on youtube.
I guess to sum up, traded better toughness/edge retention for corrosion resistance

Shasha wrote: ↑

Tue Sep 09, 2025 10:26 am

sage047 wrote: ↑

Mon Sep 08, 2025 5:41 pm

weeping minora wrote: ↑

Sat Sep 06, 2025 11:57 am

Thanks Larrin. My reading on this seems to lead me to believe that the second "MagnaMax" heat for this Mule release was unintentionally quite a bit further out of compositional specification within the tolerances that were aimed for. Is this so, and why the composition has been redacted?

*Edited for clarity.

Larrin has stated elsewhere that Magnamax heat 2 was out of spec for the steel. Instead of the additional chromium requested, there's +0.25% more carbon. Seemingly resulting in higher toughness at equivalent hardness than heat 1, and higher hardness at equivalent austenitizing temps (@2200f heat 1 hit approx 64.5 HRC and heat 2 hits just over 66HRC). At 64.2 ish HRC heat 1 hits approx 6t-lbs toughness and heat 2 hits 7.7ft-lbs ish. I'm eyeballing them where there's a decimal though. and Larrin also estimated the corrosion resistance to be in the range of M390, S45Vn and Elmax which was less than what he was going for. Further info is on the patreon it seems, but I'm going on what has been said publicly on youtube.
I guess to sum up, traded better toughness/edge retention for corrosion resistance

I’ll take that trade off

sal wrote: ↑

Tue Sep 09, 2025 1:25 pm

Hi Shasha,

Welcome to our forum.

sal

Larrin wrote: ↑

Thu Sep 04, 2025 10:01 am

Crucible produced two heats of MagnaMax. Spyderco used the second for the "MagnaMax" mule. The more limited "Proto X" mule used the first heat. There were some small modifications attempted between the first and the second. These were prototype heats for analysis to determine if the steel hit the property targets, and the remaining steel was sold to those willing to experiment with it.

There will be minor differences in composition between the Crucible heats and the final material made at other mills, though there are also minor differences between any two heats made by the same company.