What is K390 Comparable to?

Discuss Spyderco's products and history.
slick228
Member
Posts: 247
Joined: Fri Sep 24, 2004 10:33 am
Location: Los Angeles, CA

What is K390 Comparable to?

Postby slick228 » Thu Dec 08, 2016 5:36 pm

What blade steel is K390 comparable or equivalent to?

Bodog
Member
Posts: 1752
Joined: Sat Oct 18, 2014 10:03 am
Location: Tierra del Sol, USA Earth

Re: What is K390 Comparable to?

Postby Bodog » Thu Dec 08, 2016 5:53 pm

A11 class of steel
They who dance are thought mad by those who do not hear the music.

User avatar
Donut
Member
Posts: 9289
Joined: Sat Sep 05, 2009 5:47 pm
Location: Virginia Beach, VA, USA

Re: What is K390 Comparable to?

Postby Donut » Thu Dec 08, 2016 9:28 pm

I think it's in the S110V range, probably more wear resistant, but it doesn't have as much stain or rust resistance.
-Brian
A distinguished lurker.
Waiting on a Squeak, Pingo, and Cliptools with a Split Spring!

NiallRiv
Member
Posts: 142
Joined: Wed Sep 03, 2014 5:07 am
Location: Mid-Coast Maine

Re: What is K390 Comparable to?

Postby NiallRiv » Thu Dec 08, 2016 9:33 pm

Any comparison I can make would be to explicit for this forum. Its amazing. A combo of S110V's cuttablity, M4's toughness, super blue's patina and cru-wear's sharpenablity.

User avatar
awa54
Member
Posts: 2357
Joined: Thu Jun 18, 2015 9:54 am
Location: Vermont, USA
Contact:

Re: What is K390 Comparable to?

Postby awa54 » Thu Dec 08, 2016 10:06 pm

Composition wise it seems to be a modified version of A11 cold work tool steel.

As far as how it performs, sharpening is about the same as lower alloy carbon steel (though it's tempered rather hard in the Pingo!) but edge retention seems more like M4.
-David

still more knives than sharpening stones...

User avatar
Doc Dan
Member
Posts: 7659
Joined: Thu Nov 08, 2012 4:25 am
Location: In a dimension as vast as space and as timeless as infinity.

Re: What is K390 Comparable to?

Postby Doc Dan » Thu Dec 08, 2016 11:45 pm

I think this will be a good steel. At first I was a bit confused as to why this choice of steel in a knife meant for police and others, that would be exposed to the elements and probably not cleaned often. But, I later decided that 1] It is a steel we have not seen a lot of and 2] other properties such as toughness and impact resistance may have weighed in on the decision.
I Pray Heaven to Bestow The Best of Blessing on THIS HOUSE, and on ALL that shall hereafter Inhabit it. May none but Honest and Wise Men ever rule under This Roof! (John Adams regarding the White House)

"Until we meet again, may the good Lord take a liking to you."
(Roy Rogers)


NRA Life Member
Spydernation 0050

tripscheck'em
Member
Posts: 211
Joined: Wed Jun 08, 2016 10:07 pm

Re: What is K390 Comparable to?

Postby tripscheck'em » Fri Dec 09, 2016 12:37 am

slick228 wrote:What blade steel is K390 comparable or equivalent to?
10v, s110v, Maxamet, Vanadis 10, Rex 121, the super duper carbide steels.

I'm guessing Spydie's using it in the Police to push sales of that model.

User avatar
elena86
Member
Posts: 2552
Joined: Fri Sep 03, 2010 6:59 am
Location: Somewhere in Europe

Re: What is K390 Comparable to?

Postby elena86 » Fri Dec 09, 2016 1:50 am

M4 on steroids

User avatar
bearfacedkiller
Member
Posts: 8977
Joined: Sat Jan 04, 2014 1:22 pm
Location: hiding in the woods...

Re: What is K390 Comparable to?

Postby bearfacedkiller » Fri Dec 09, 2016 6:30 am

It's composition makes it comparable to the a11 steels. K390 is the closest to A11, 10v or K294. S90V is the closest stainless steel to K390 that I am aware of. K390 is a very wear resistant steel and should fall into a similar performance class as S110V but composition wise the S110V has a lot more in it and it is stainless.

Short answer, it is the European equivalent of 10v/A11. ;)
-Darby
sal wrote:Knife afi's are pretty far out, steel junky's more so, but "edge junky's" are just nuts. :p
SpyderEdgeForever wrote: Also, do you think a kangaroo would eat a bowl of spagetti with sauce if someone offered it to them?

User avatar
sal
Member
Posts: 12261
Joined: Fri Sep 24, 2004 12:00 pm
Location: Golden, Colorado USA

Re: What is K390 Comparable to?

Postby sal » Fri Dec 09, 2016 2:11 pm

Doc Dan wrote:I think this will be a good steel. At first I was a bit confused as to why this choice of steel in a knife meant for police and others, that would be exposed to the elements and probably not cleaned often. But, I later decided that 1] It is a steel we have not seen a lot of and 2] other properties such as toughness and impact resistance may have weighed in on the decision.
Hi Doc,We make quite a few designs for the Law Enforcement market at this time, so the design for Police use is necessarily the case anymore, like it was in 1984. I designed the Police 4 to include what I would like in a knife, more than what a LEO might like. It's still a kissing cousin, and large for most people. I widened the blade, enlarged the hole and selected a steel that I like to use. The design's success in the marketplace is unknown at this time. But I get to have one. :p

sal

User avatar
bearfacedkiller
Member
Posts: 8977
Joined: Sat Jan 04, 2014 1:22 pm
Location: hiding in the woods...

Re: What is K390 Comparable to?

Postby bearfacedkiller » Fri Dec 09, 2016 2:16 pm

I get to have one too!
-Darby
sal wrote:Knife afi's are pretty far out, steel junky's more so, but "edge junky's" are just nuts. :p
SpyderEdgeForever wrote: Also, do you think a kangaroo would eat a bowl of spagetti with sauce if someone offered it to them?

User avatar
archangel
Member
Posts: 1020
Joined: Mon Mar 23, 2015 2:02 pm
Location: Wuppertal, Germany, Earth

Re: What is K390 Comparable to?

Postby archangel » Fri Dec 09, 2016 2:38 pm

+1

If I ever figure out how to find the money for the others, too... :p
Michael
Proud owner of 32 spydies (32 different models, 31 different steels) and a Sharpmaker
Missing steels: LC200N, Maxamet, M390, 440C, 154, 3V, 4V

User avatar
Doc Dan
Member
Posts: 7659
Joined: Thu Nov 08, 2012 4:25 am
Location: In a dimension as vast as space and as timeless as infinity.

Re: What is K390 Comparable to?

Postby Doc Dan » Fri Dec 09, 2016 7:53 pm

sal wrote:
Doc Dan wrote:I think this will be a good steel. At first I was a bit confused as to why this choice of steel in a knife meant for police and others, that would be exposed to the elements and probably not cleaned often. But, I later decided that 1] It is a steel we have not seen a lot of and 2] other properties such as toughness and impact resistance may have weighed in on the decision.
Hi Doc,We make quite a few designs for the Law Enforcement market at this time, so the design for Police use is necessarily the case anymore, like it was in 1984. I designed the Police 4 to include what I would like in a knife, more than what a LEO might like. It's still a kissing cousin, and large for most people. I widened the blade, enlarged the hole and selected a steel that I like to use. The design's success in the marketplace is unknown at this time. But I get to have one. :p

sal
Hey, thanks for the information, Sal! This will be my first Police. I am already saving up for it. I do think it is an interesting steel choice and cannot wait to try it out in this knife platform.
Besides the steel and other improvements you mentioned, the weight reduction also contributed to my decision.
I Pray Heaven to Bestow The Best of Blessing on THIS HOUSE, and on ALL that shall hereafter Inhabit it. May none but Honest and Wise Men ever rule under This Roof! (John Adams regarding the White House)

"Until we meet again, may the good Lord take a liking to you."
(Roy Rogers)


NRA Life Member
Spydernation 0050

Phil Wilson
Member
Posts: 116
Joined: Sat Jan 01, 2011 11:56 am
Location: Northern California in the heart of the Gold Country

Re: What is K390 Comparable to?

Postby Phil Wilson » Fri Dec 09, 2016 8:56 pm

I have been using K390 from the start ever since it was introduced by Bohler and I got some small samples to try. A bit of history is that it is the European version of CPM 10V but not the exact chemistry (about 1% less V plus small addition of a few others). That is because the CPM 10V chemistry was protected by patent at the time. If you check the K390 data sheet it claims that the bit less V gives K 390 a little boost in impact toughness. It also can be heat treated at a lower temp. than 10v. So it is pretty much the same as the A11 grade but different in a few small details. It is hard to tell the difference between CPM 10v and BU K390 in the real world in my experience. I like both grades and they are the base line (along with Vanadius 10 and K294) from which I measure wear resistance. The 5 chrome is there to make them all air hardening among other things and does not contribute much to corrosion resistance. It is going to make a killer knife in the new offering and be another classic. Phil

User avatar
The Mastiff
Member
Posts: 5156
Joined: Sun Jun 04, 2006 2:53 am
Location: raleigh nc

Re: What is K390 Comparable to?

Postby The Mastiff » Sat Dec 10, 2016 12:58 pm

Thank you for adding that Phil. I got one store to open up the pre order for this and for the first time in years I'll be first on the list. This will be a heck of a knife. I'm looking forward to the lock as much as the steel. I currently have 4 Police models and really like the design but the new model checks even more boxes for me.

Joe

Skidoosh
Member
Posts: 485
Joined: Tue Apr 30, 2013 1:48 pm

Re: What is K390 Comparable to?

Postby Skidoosh » Sat Dec 10, 2016 3:06 pm

I've been re-profiling my K390 Mule and a SB caly 3. I've noticed that the k390 seems to take a keener edge than SB, of course that can be subjective but it gets very sharp and polishes very nicely. I also have noticed it patinas rather quickly. It is not a deep patina like super blue but it is a noticeable.

ABX2011
Member
Posts: 1681
Joined: Thu Oct 01, 2009 7:54 pm

Re: What is K390 Comparable to?

Postby ABX2011 » Sat Dec 10, 2016 4:41 pm

Sal,
You did an awesome job on the redesign. This is my most anticipated knife of '17.


Return to “Spyderco General Discussion”

Who is online

Users browsing this forum: attila, Bing [Bot], Coffeetron, curlyhairedboy, Gamecock, Google [Bot], jdw, Majestic-12 [Bot], MSN [Bot], SLOSpyder and 21 guests