Composite Blade Knives

RamZar

RamZar

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EXCLUDING PURE LAMINATED BLADES...

Looking at knives with a composite blade made from 2 or more steels basically braze-welded together.

Other than Kershaw & Zero Tolerance (see list below) I only have one other knife that has a composite blade and that's the Fox Knives FX-117 CT N.E.R.O Nighthawk folder with Grade 5 Titanium on the spine and N690Co Cobal Vanadium steel on the edge.

I hear the upcoming Spyderco ParaMilitary 2 Limited Edition Sprint Run C81CFPE2 is also a composite blade of CPM 154 on the spine and CPM S90V on the edge. I don't know if it's braze-welded.

Here's an incomplete list of Kershaw & Zero Tolerance knives with composite blades:

  1. Kershaw Blur 1670BRNZDP
  2. Kershaw Junkyard Dog II 1725CB
  3. Kershaw Junkyard Dog 2.2 1725CB
  4. Kershaw Junkyard Dog 2.2 1725CBBLK (Black Blade)
  5. Kershaw Leek 1660CB
  6. Kershaw OCC 1000 (10th Anniversary Knife)
  7. Kershaw Rake 1780CB
  8. Kershaw Shallot 1840CBZDP
  9. Kershaw Speedform 3500
  10. Kershaw Tilt 4001 (Black Blade)
  11. Kershaw Tilt 4100SW (Stonewashed Blade)
  12. Kershaw Tyrade 1850 [see post #5]
  13. Kershaw Volt 3600
  14. Zero Tolerance 0350CB
  15. Zero Tolerance 0350CBZDP
  16. Zero Tolerance 0350CBZDPST
  17. Zero Tolerance 0454
  18. Zero Tolerance 0560CBCF
  19. Zero Tolerance 0777
  20. Zero Tolerance 0888

The video below explains KAI's composite blade technology and manufacturing:

[video=youtube;BsoRs5Pm20I]http://www.youtube.com/watch?v=BsoRs5Pm20I[/video]

Here's how Spyderco explains their new composite blade:

tazkristi said:
The blade:
Spyderco is the first production company to use this unique and very exotic, composite blade steel from Crucible Industries of New York. The manufacturing process is in itself unique. It begins with a 1-inch thick plate of CPM S90V. The plate is placed in a specially engineered and built steel can and the voided areas on either side of the plate are filled with CPM 154 powder. The can is positioned on a vibratory table to ensure consistent density in the packing of the powder and then it is welded shut and subjected to a vacuum to evacuate any oxygen. The can then enters an autoclave under extreme heat and pressure where the powder forge-welds with the plate. Afterwards, the can is machined off; the remaining slab is cogged-down in a roller into flattened sheets suitable for making knife blades. Where many layered steels are produced by heating plates and then sandwiching the steels together, this process uses specialized equipment and welding techniques commonly featured in the manufacture of aircraft parts where steels are held to rigorous specifications to avoid structural failure.
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I'm a big advocate of composite light-weight materials whether used in knives or aircrafts or what have you.

The use of CF and composites show up prominently in the Boeing 787 with nearly half the airframe being carbon fiber reinforced plastic and other composites and 15% titanium. Tremendous weight savings and lower maintenance costs.

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crom said:
Don't forget the Tyrade with G10 scales
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Credit to rsngfrce's thread: (in)Complete list of Kershaw knives:

Tyrade Composite blade Titanium Frame (1850)
Tyrade Composite Black G10 Scales (1850G10BB / 1850BLKBB) -120 pieces
Tyrade Composite Black G10 Scales (1850G10SW / 1850BLKSW) - 845 pieces
Tyrade Composite Orange G10 Scales (1850OR) – 150 pieces
Tyrade Composite Orange G10 Scales (1850ORBB) – 119 pieces
Tyrade Composite Tan G10 Scales (1850TANSW) -175 pieces
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Here are the two different joint patterns in the Junkyard Dog II 1725CB and Junkyard Dog 2.2 1725CB. I don't know why it was changed whether for purely aesthetics purposes and/or other reasons.

Junkyard Dog II 1725CB
21s6nym%2BD8L._SX342_.jpg


Junkyard Dog 2.2 1725CB
31UQyGNkQ1L._SX342_.jpg
 
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The CPM-154 and CPM S90-V combination is hot iso-static pressed by Crucible and hot rolled to size by Niagara Specialty Metals. (A plate of CPM S90V is placed in a can with CPM 154 powder and HIP'd.) The bond is excellent and initial testing looks promising. There have been some limited quantities made and there is more on order. We are going to try some new combinations to see how they work too.
 
Here are pictures of the two folders with composite blades that are not made by KAI:

Fox Knives FX-117 CT N.E.R.O Nighthawk folder with Grade 5 Titanium on the spine and N690Co Cobal Vanadium steel on the edge and Spyderco ParaMilitary 2 Limited Edition Sprint Run C81CFPE2 with CPM 154 on the spine and CPM S90V on the edge.

b2ead6f6-4ee4-497d-aeb9-71ade3b3cdb4_zps83a90d6f.jpg~original

f6c55d4c-aeae-4467-b6b2-38ce85f1e786_zps7870df0f.jpg~original
 
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Kai also has the Seki Magoroku line that offers composite blades.
 
GatorFlash1 said:
Spyderco Calypso Jr was one of the first non-Damascus knives I acquired.

ZDP-189 & 420J if I remember correctly.
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Morrow said:
That one has a laminated blade.
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Both of Spyderco's Caly 3 Carbon Fiber (C113CF) and Caly 3.5 Carbon Fiber (C144CFE) use the Laminated ZDP-189 / 420J2 blade steel.

I believe the Spyderco ParaMilitary 2 Limited Edition Sprint Run C81CFPE2 with CPM 154 on the spine and CPM S90V is the first composite blade knife by Spyderco.
 
RamZar said:
Here are pictures of the two folders with composite blades that are not made by KAI:

Fox Knives FX-117 CT N.E.R.O Nighthawk folder with Grade 5 Titanium on the spine and N690Co Cobal Vanadium steel on the edge and Spyderco ParaMilitary 2 Limited Edition Sprint Run C81CFPE2 with CPM 154 on the spine and CPM S90V on the edge.

b2ead6f6-4ee4-497d-aeb9-71ade3b3cdb4_zps83a90d6f.jpg

f6c55d4c-aeae-4467-b6b2-38ce85f1e786_zps7870df0f.jpg
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You have the CB PM2 already? Nice.
 
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