• JayleneSlide@lemmy.world
    link
    fedilink
    English
    arrow-up
    3
    ·
    5 months ago

    Stainless steel that gets coated is no longer stainless steel. Stainless steel requires exposure to sufficient oxygen in order to maintain the protective oxide layer.

    These are rudder bolts from the same gudgeon on my sailboat. The black stuff is anoxic corrosion.