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The BladeForums.com 2024 Traditional Knife is available! Price is $250 ea (shipped within CONUS).
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Steels that withstand rust
- Thread starter badJuJoo
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A bucket of chlorine overnight. Pic from the Spyderco forum, and not mine.
Wow! Is it just surface pitting or is the blade like a sponge now?
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You can chemically corrode H1, but not while the knife is in your possession. Your body would get ruined before the steel would.
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Wow! Is it just surface pitting or is the blade like a sponge now?
LOL the amazing thing is the guy who deliberately did this also claims that in spite of the corrosion there wasn't a spot of red rust--rather it had a black layer of sludge on the blade.
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So thick you could cut it with a...knife? 
Yeah, it essentially looked like the kind of black gunk you get on a blade when forcing a patina--the stuff that wipes away and leaves the patina behind.
Yeah, it essentially looked like the kind of black gunk you get on a blade when forcing a patina--the stuff that wipes away and leaves the patina behind.- Joined
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from my understanding:
typical "rust" that's orange/red in color is iron oxide. the iron in a knife will react to the oxygen in the air and in water. stainless steels use high amounts of chromium to slow this down. chromium protects the iron from oxidizing. the problem is, the more carbon you add to a basic stainless steel to harden it, the less free chromium you have available to protect the iron. as the stainless steel is heat treated, free chromium is tied up as chromium carbide, which doesn't protect the iron from oxygen. this is just a very basic explanation.
H1 has very little carbon and it's not heat treated, so basically all of the chromium is free to protect the steel (14%-16% chromium). but without the carbon and heat treating H1 needs something else to harden it so it's suitable for making knives. that's where the nitrogen comes into play. the nitrogen acts as the "hardener" in place of carbon.
Planterz
Іди на хуй Путін!
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Nearly corrosion proof! The only H1 blade I've ever seen corroded at all was one deliberately left overnight in a bucket of chlorine, and it just got a weird acid-etched finish.
Alkali-etched.
