Spyderco Forums

Suspect H1 has unseen advantages- The Ladybug Salt PE has still not been sacrificed to the Metallurgy Gods due me in Jungle snd/or Grant sick. So still to confirm theory/guess re austenite/martensite bit. Have gone to Ladybug hawkbill on keyring for ripping open just about anything and Maxamet Mule ...

Skywalker wrote: Carbon (C) 0.15 / Chromium (Cr) 14.00-16.00 / Cobalt (Co) -- / Niobium (Nb) -- / Copper (Cu) -- / Manganese (Mn) 2.00 / Molybdenum (Mo) .50-1.50 / Nickel (Ni) 6.00-8.00 / Nitrogen (N) 0.10 / Phosphorus (P) 0.04 / Silicon (Si) 3.00-4.50 / Sulphur (S) 0.03 / Tungsten (W) -- / Vanadiu...

Query re composition, Edge-U-Cation shows C 0.15, Cr 14-16, Mo 2, Ni 0.5-1.5, N 6.0-8.0, P 0.1, Si 0.4, S 3.0-4.0 and W 0.03.

Previous stuff I saw showed N 0.1% which seems to be pretty common on Google, also S at 3.0-4.0 seems high

Suspect the work hardening may happen quicker with a coarser grind initially on the theory that: - there is deformation (=workhardening) well below the scrape of the grain - the larger grains would deform to a (proportionally?) greater depth Maybe able to coment on effect of grinding later. I don't ...

Suspect H1 is not really a steel (Iron -carbon alloy with the carbon jammed in the crystal lattice) and doesn't necessarily behave like one. My understanding is that sufficient alloys are added to remove all the carbon from the iron and tie it up as carbides. This gives the corrosion resistance. Nit...

"You can put a small half inch lanyard on the end of a ladybug so that you can hold onto it with your whole hand" Yup, do that (bigger paw so need a bit over an inch) and that's OK although I have just ordered a Dragonfly Salt to try. The main thing is SE/PE and both have advantages so um/...

Edited to add attack on SE, PE and Hawkbill with carborundum to round the edge off the sabre grind is quick,easy and improves abusive slashing and hacking a lot (especially with thick plastic) while still retaining most of the sabre ground stiffness advantage.

For years I have had a H1 PE Ladybug for EDC and a couple of SE ones floating around the garden. The idea of one each end to end giving me the choice in a 4+" thing for my paw size has always seemed like a good idea. Tried a Hawkbill Ladybug in the jungle (Malaysia) and it seems even better tha...

Work hardening involves plastic deformation of the material. Sharpening the knife is just stock removal, therefore - technically speaking - it is not work hardening. Stock removal via Electro Chemical Machining or Electro Discharge Machining does not involve plastic deformation. Stock removal via g...

As a solid-state chemist I am unaware of any crystal system where a buildup of dislocations does not cause brittleness. In fact, most amorphous metals (no net crystal system, aka all dislocations and defects) are incredibly hard and brittle. :cool: The question is how deep does the buildup of dislo...

Re the metallurgy stuff, have a 40 yo degree in the subject and while myself and mates don't work in this area (physical) we want to know more about this HI stuff - the hardness, tensile and elongation from sacrifice of a ladybug (difficult to get virgins these days) to the metallurgy gods show a fe...

Now have mostly Spyderco blades. Hopefully never use: Mule #5 in each vehicle emergency kits Byrd SE tied to harness in plane Corrosion not an issue as lightly cosmolined Regular use (generally abusive) Pacific Salt PE Ladybug Salt PE - Keyring Ladybug salt SE - lying around garden Regarding the hol...

Like I said I'm just experimenting. I may be wasting time but if it works it will be a good way to harden the edge without removing stock from constant stone abrasion. Metal burnishing is used on all types of machine tool and manufacturing applications and I just can't help but wonder if it will wo...

Have had issues with 3/16 hex key. As my own plane uses one for the fuel caps I tend to have them littering the scene.

Maybe the next thing with this steel is some Nitrogen

http://adsabs.harvard.edu/abs/1992NIMPB..72...55W