Corrosion Test gets *NASTY*.......

[Fred Sanford]

MacTech,

That's amazing. In May I will be taking a vacation to an ocean home in North Carolina. On the way I'll be stopping at New Graham. I think it will be the perfect time to grab a Salt I. :)

Thanks for all the testing.

[MacTech]

I think I'll fire up the chamber for a final test, sort of a baseline, I'll put in the cheapo Sheffield hawkbill that I tested in my *first* corrosion test, the one that was exposed to ocean water salt spray and began rusting in one hour, and failed in six, put it in the fog chamber and see how long it takes to rust in salt fog

[cgjones]

[quote="MacTech"]
hmmm.... maybe Spyderco should contract with Apple for the next incarnation of the MacBook Pro and Mac Pro, make the cases of H-1 steel ]

Nah, Apple stuff already scratches easily enough.

[MacTech]

The polycarbonate cased Apple stuff *does* pick up scratches fairly easily, yes (iBook, MacBook, the first-gen iPod Nano, the hard drive based iPods) but the Aluminum housed stuff (PowerBook G4 Aluminum, PowerMac G5 tower, MacBook Pro, Mac Pro, second-gen Nano) is quite durable, i have an old 1 GHz PowerBook G4 that still looks basically brand new

yeah, H-1 would scratch too easily for computer casing (maybe if it was bead-blasted?)

i guess it's safe to say if the Salt series can withstand my salt chamber, it won't rust, period

[Th232]

Hmm... case of H-1? That'd be interesting, but what about the ventilation?

Glad to hear that the fogger hasn't burnt out (or caught on fire!).

[griff76]

Very cool test. I have a Tasman on the way (better be) and will be getting some more Salts soon. I do quite a bit of ocean fishing and will be doing a long term test as well. I will let you know how its holding up in 10 years.

[MacTech]

Okay, it's not a Spydie per-se, but i'm now establishing a baseline test, as of 7:15 PM, i have put my cruddy old Sheffield hawkbill in the fog chamber, previously, this knife succumned to the salt spray test very rapidly, initial rusting took only *ONE HOUR* to appear, and the knife failed after six hours

I'll check it again at 7:45, to see if there are signs of rust, i'm not thinking this one will last long

[jaislandboy]

Very cool test. I have a Tasman on the way (better be) and will be getting some more Salts soon. I do quite a bit of ocean fishing and will be doing a long term test as well. I will let you know how its holding up in 10 years.

yeah, cool griff76, i'm gonna hold u to this, esp. if u and I are around in 10 yrs... :D
Oh yeah, Mactech, keep up the good work!

[MacTech]

As expected, after 1/2 hour in the chamber.....

WE HAVE RUST!

two very tiny spots, one on the bottom of the tang, one in the Sheffield logo, they're small, very small, but they're there

i'll check in an hour to see the growth rate, and leave the knife in as long as i can, i *want* to see how badly i can kill it.....

[Fred Sanford]

MacTech,

I would love to see how a "normal" steel would do in that thing. Have you tried any other regular knives? If you have please forgive me as I must have missed the test. :)

[MacTech]

If you do an advanced search for my name, it'll pick up the corrosion test threads among many others, easiest way to do it

Yes, i've tested other knives;
Pacific Salt
Salt 1
Native
Delica 4 SS SE
D4 Trainer
Byrd Meadowlark
Sheffield hawkbil
Buck Metro
CCC Balisong
CCC "Mini-Delica"
CPM-3V prybar

Pics of the Sheffield after 1 hour;

corrosion is *accelerating* rapidly, about an hour after the last pic was taken, the blade looks like *this* now, rust is now appearing on the spine of the knife as well


11:15 PM, air in the bedroom's tasting salty again, and I can clearly see (albeit dimly) the beam from my green laser pointer in a room *illuminated by a 60 watt light bulb*

here's a time exposure with the light off, the beam intensity is about half what's shown here, but it *IS* visible...


i may not be able to run the test overnight, not without compromising the safety of my electronics.....

it's safe to say at this point that the Sheffield has failed the salt fog test after 1 hour, so yes, the salt-fog chamber is *extremely* nasty

[Apeman]

Thanks alot MacTech, that was one awesome test, better then trhe last test you did. But I would have liked to have seen some chlorine in that tank as well, including the fogger, and the rock salt. Now that would have been one nasty test.

I can conclude that I love my Pacific Salt that much more, thats why its my EDC 5/7 days of the week.

Thanks again,

~Andrew

[Zwaplat]

You can put as much salt water to it as you want, H1 is chemically not able to interact with it.
I am curious though, how good it resists to something like chlorine and acids. Prolly not much better than normal steel.

[MacTech]

DUE TO THE GRAPHIC NATURE OF THE PHOTOS, VIEWER DISCRETION IS ADVISED.....

just got home from work, i left the fog chamber unplugged during the day, so the knife was just sitting in the chamber with no salt fog, just the saline water below it....

this is what i came home to;



Spoiler space...
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Last warning, these images are not for the weak stomached
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and that was just from sitting in the tank, no salt fog.....

so needless to say, i turned the fogger on at 9 PM EST, will let it run until i turn in for the night (or the room gets salty again, whichever comes first) and take the final pics

Yes, the Salt 1 withstood that *SAME* salt fog bath *completely* unaffected

[Th232]

Good grief man, what are you doing to that thing!

Umm... have you given any thought to getting a cover for that thing? I'm worried about every metal object in your room now (barring the Salt, of course).

[MacTech]

There *IS* a cover, if you go back to page 2, you'll see the glass lid on the tank....

[Th232]

Oops. My mistake! :o

[markg]

You can put as much salt water to it as you want, H1 is chemically not able to interact with it.
I am curious though, how good it resists to something like chlorine and acids. Prolly not much better than normal steel.

I agree... I think the next step is to try staining or corroding chemicals to see what happens...

[Apeman]

MacTech - I just thought of the best corrosion test ever... insted of using water with all your "rock salt," use "cholrine!" Yeah that would definetly do some damage, I say go and buy a thing of bleach, and try it out.

Also those pictures might give me nightmares!!!

~Andrew

[enduraguy]

I too would be interested in how the steel (H-1) does against other chemicals. Would probably have to move the tank outside though.