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Thread: New one dollar coin - it will rust!

  1. #21
    Moderator diver-hloc's Avatar
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    Default Re: New one dollar coin - it will rust!

    Come back early from work, to early to play my PS3... and since my GF/Fiancée has returned to her home country... decided to see if bro/sis user12343 worries is correct.

    All phones taken by H/P... not so free as to bring out my DSLR to do this... can play my new PS3 game hor... LOL


    #1 - Most shiny new $1 coin I can find at home...


    #2 - Liquid detergent and powder detergent is used...


    #3 - Coin is added at into the mix at 17:31hr...



    I have to get to work early tomorr... so, hopefully will have time to post the result then...


    Let the experiments continue !!

    Scuba & Father... For Life

  2. #22

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    What are we expecting to 👀!

    Do u have a 10 more coins to make 1-10 folds of dilutions and compare?

    No control (pure water), so that we know the 'damage' comes from the concentrated detergent.

  3. #23
    Moderator diver-hloc's Avatar
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    Default Re: New one dollar coin - it will rust!

    Quote Originally Posted by paesyl View Post
    What are we expecting to 👀!

    Do u have a 10 more coins to make 1-10 folds of dilutions and compare?

    No control (pure water), so that we know the 'damage' comes from the concentrated detergent.

    Hello... if I really so free... I'll go play my PS3... LOL


    This experiments is for my own curiosity... and I'm sharing the result. But few free to do your own experiment and share with use the result. Thxs...

    Scuba & Father... For Life

  4. #24
    Senior Member Sion's Avatar
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    Default Re: New one dollar coin - it will rust!

    Quote Originally Posted by Octarine View Post
    Is she holding a coin between her thighs? Is she also waiting for it to get rusty?
    Her "hotness" will melt the coin.

  5. #25

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    Quote Originally Posted by Octarine View Post
    Is she holding a coin between her thighs? Is she also waiting for it to get rusty?
    Dampness promotes corrosion ..... and mold....

  6. #26
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    Default Re: New one dollar coin - it will rust!

    photo credit: MAS


  7. #27

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    Quote Originally Posted by qystan View Post

    Dampness promotes corrosion ..... and mold....
    So you're saying that....?


  8. #28
    Member 9V-Orion Images's Avatar
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    Default Re: New one dollar coin - it will rust!

    Quote Originally Posted by diver-hloc View Post
    I took a $1000 bill and put it in fire... Guess what, I realize it got burned to ash! Try it to see yourself.

    Guess what again.... this is what happen when you do things to a item you are NOT SUPPOSED to... Canon L lens are weatherproof... doesn't mean its good for the lens if I leave it outside the house for a month or 2... metal coins are weatherproof too... but leaving it underwater for a month ??

    The new coin is made out of brass plated and inner circle is nickel plated... NOT MARINE GRADE STAINLESS STEEL that resist rusting in salt water used by Scuba Divers and Boat/Ship owner incase TS forgotten.
    There is no such thing in the world as a "marine grade stainless steel that resist rusting in salt water" even aerospace grade titanium alloy corrodes eventually under certain circumstances and environment which is more often and sooner than anyone can imagine. Some form of corrosion preventive measure such as inhibitor coatings and sacrificial anode protection etc. etc. is always required for any applications in a humid saline environment.
    Last edited by 9V-Orion Images; 28th November 2013 at 11:33 PM.
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  9. #29
    Senior Member Halfmoon's Avatar
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    Default Re: New one dollar coin - it will rust!

    Quote Originally Posted by Sion View Post
    Guys, get a girlfriend.

    She is a lot more interesting to play with than a coin.

    I will not be playing with her... I will be "loving" her....
    Art is perception; Perception is art.

  10. #30

    Default Re: New one dollar coin - it will rust!

    Corrosion

    A dissolving and wearing away of metal caused by a chemical reaction, usually between water and between two different metals.

    http://en.wikipedia.org/wiki/Galvanic_corrosion

    http://en.wikipedia.org/wiki/Corrosion

    http://corrosion-doctors.org/Principles/What-is.htm
    I eats, shoots & leaves

  11. #31
    Moderator diver-hloc's Avatar
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    Default Re: New one dollar coin - it will rust!

    Quote Originally Posted by 9V-Orion Images View Post
    There is no such thing in the world as a "marine grade stainless steel that resist rusting in salt water" even aerospace grade titanium alloy corrodes eventually under certain circumstances and environment which is more often and sooner than anyone can imagine. Some form of corrosion preventive measure such as inhibitor coatings and sacrificial anode protection etc. etc. is always required for any applications in a humid saline environment.

    The magic word here is 'Resist'... NOT 'Prevent'... and yes, the more correct term is 316 Stainless Steel, which is used to make surgical tools, watches , and even nuclear reprocessing plants - http://www.hho4free.com/stainless_steel_types.htm - The name 'Marine Grade' is used by my Scuba Diving buddies as this is the grade of SS that won't rust or suffer corrosion after 5 dive days and months of storage inside the gear bag.



    Btw.... RESULT !!



    Coin was taken out at 0615hr and dried by kitchen cleaning paper... as can see (even under bad lighting), there is no rust stain on the 2 round water spot below the coin... the coin is about as shiny as before... while this in NO WAY prove anything beside that I'm too free and its too early in the morning... leaving the coins in your pocket during overnight washing is still safe enough... but a month underwater is abit silly to expect nothing to happen...

    Scuba & Father... For Life

  12. #32
    Senior Member Sion's Avatar
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    Default Re: New one dollar coin - it will rust!

    Quote Originally Posted by diver-hloc View Post


    ....the coin is about as shiny as before...
    Where got shiny?

    It has turned black.


  13. #33
    Moderator diver-hloc's Avatar
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    Default Re: New one dollar coin - it will rust!

    Quote Originally Posted by Sion View Post
    Where got shiny?

    It has turned black.


    Bad lighting lah...

    1st shot use flash and it glows too much... too sleepy in the morning to find a good spot around the house to do it... LOL....

    Scuba & Father... For Life

  14. #34
    Moderator diver-hloc's Avatar
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    Default Re: New one dollar coin - it will rust!

    Ok lah... shiny one... before the drying... so hard to download from phone to web... LOL


    Scuba & Father... For Life

  15. #35

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    Quote Originally Posted by Sion View Post
    Where got shiny? It has turned black.
    Moldy?

  16. #36

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    Quote Originally Posted by 9V-Orion Images View Post
    There is no such thing in the world as a "marine grade stainless steel that resist rusting in salt water" .
    Actually there is, 316 is commonly referred to as marine grade SS.

    It's not rust resistant, it's corrosion resistant.

    Interesting thing about stainless steel is that it will hold up quite well if immersed in water, can be saltwater, that has supply of oxygen. It'll form an oxide film that protects it.

    If immersed in stagnant water, once void of oxygen, the film disappears, dissimilar metal corrosion sets in and it eats itself away. The dissimilar metals are from the stainless steel alloy.

  17. #37
    Member armadillo's Avatar
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    Default Re: New one dollar coin - it will rust!

    Interesting topic, this is make my day LOL.
    What I find out, new $1 coin attracted by magnet.
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  18. #38

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    Quote Originally Posted by armadillo View Post
    Interesting topic, this is make my day LOL.
    What I find out, new $1 coin attracted by magnet.
    Time to get a powerful portable magnet to sweep the floor for coins

  19. #39
    Senior Member Sion's Avatar
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    Default Re: New one dollar coin - it will rust!

    Quote Originally Posted by armadillo View Post
    Interesting topic, this is make my day LOL.
    What I find out, new $1 coin attracted by magnet.
    Have you tried to use two as nipple covers to see whether they stick?

  20. #40
    Member Foxshade's Avatar
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    Default Re: New one dollar coin - it will rust!

    Wow, nice find.

    Before reading this, all I know is the single new coin is still not enough to get me Bandong drink.
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