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Romix
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[*] posted on 21-2-2026 at 21:34
Spyderco's LC200N steel.

Left blade of Spyderco Siren knife in a cup with concentrated solution of table salt, on 3rd day in it some rust appeared and I noticed a little hole on the blade eaten by salty solution.



440173370_326757427098438_763184368103598859_n.jpg - 50kB 439255034_824377592892291_1949879003584413582_n.jpg - 60kB

[Edited on 22-2-2026 by Romix]
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Romix
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[*] posted on 21-2-2026 at 21:36


https://www.youtube.com/shorts/SPftWhLLKPU
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Romix
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[*] posted on 21-2-2026 at 21:43


Photo in the fist comment is 3rd day in salty water.
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Texium
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[*] posted on 21-2-2026 at 21:46


Why should I not send this to Detritus?



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Romix
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[*] posted on 21-2-2026 at 21:51


Quote: Originally posted by Texium  
Why should I not send this to Detritus?

Do it, if you want.
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j_sum1
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[*] posted on 22-2-2026 at 01:18


This is called pitting.
Basically, a mini galvanic cell is created which accelerates corrosion in a highly localised area. As the pit develops, the corrosion rate increases. (Lovely positive feedback loop.)
Aluminium, chromium and stainless steels are the most susceptible, especially in an environment with chloride ions. Best prevention is a surface treatment such as anodising, or to keep the metal clean, and preferably dry.

It can happen rather quickly. I am curious as to why you left your knife in salt water for so long.
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Romix
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[*] posted on 22-2-2026 at 01:42


Quote: Originally posted by j_sum1  
This is called pitting.
Basically, a mini galvanic cell is created which accelerates corrosion in a highly localised area. As the pit develops, the corrosion rate increases. (Lovely positive feedback loop.)
Aluminium, chromium and stainless steels are the most susceptible, especially in an environment with chloride ions. Best prevention is a surface treatment such as anodising, or to keep the metal clean, and preferably dry.

It can happen rather quickly. I am curious as to why you left your knife in salt water for so long.

Thank you for your reply, you are not the first person saying that this is pitting type of corrosion. I did it to test the knife, before buying more of the same supplier, salt series too Magnacut, H2, as the knife is advertised to handle salty water and do not rust in it.
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