White lead

Discussion in 'Props' started by rfleet1066, Aug 7, 2016.

  1. rfleet1066
    Joined: Feb 2012
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    Location: New Kent, VA USA

    rfleet1066 rfleet1066

    I'm looking for a source of white lead to put on my stainless drive shaft where the bronze wheel will be mounted to prevent galvanic corroision/ adhesion.. The old timers tell me this is the best compound to use if I can find it.

    Please advise.

    Ryland
     
  2. Barry
    Joined: Mar 2002
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    Barry Senior Member

    Bronze and passive 316 stainless are cathodic and quite close on the galvanic scale
    Lead is more active and subject to galvanic corrosion in sea water when in contact with either the bronze or SS

    ( the reason that lead is the most popular anode)

    Putting an active anodic material between two closely positioned noble metals is not something that I would choose to do.

    Every SS prop shaft that I have seen has lead anodes clamped onto them to reduce corrosion of the shaft and prop as they are sacrificial to SS and Bronze

    To make up the joint, I would use a lithium based grease to ease making up the joint and then clamp a couple of lead anodes onto the shaft and call it a day
     
  3. gonzo
    Joined: Aug 2002
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    gonzo Senior Member

    1 person likes this.
  4. waikikin
    Joined: Jan 2006
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    waikikin Senior Member

    I haven't seen white lead for a while, place I worked at used to make up a seam compound with it, that stuff came from India..... can't remember much more about it.... was it lead we were talking about?
    J.
     
  5. Mr Efficiency
    Joined: Oct 2010
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    Mr Efficiency Senior Member

    White lead is lead oxide so far as I know, formerly mainly used as a paint pigment with good opacity and anti-mould properties. Toxicity issues saw it replaced by Titanium Oxide.
     

  6. SamSam
    Joined: Feb 2005
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    Location: Coastal Georgia

    SamSam Senior Member

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