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  • PSA: Xena Motorbike Security Chain £9.99
  • nealy
    Free Member

    nealy the chain is the same type in that link you posted ie 13mm links and Hardened steel!

    Pragmasis and Almax chains are case hardened rather than through hardened which makes them virtually uncroppable, the Xena chain just says it’s hardened so I’m assuming its the same as all the other sold secure gold chains and can be cut in a minute. See the videos on the Almax website to watch them being cut.

    Of course they could just cut your bike in half!!

    trail_rat
    Free Member

    Hope not nealy , otherwise they are like an armadillo …. Hard on outside soft on the inside.

    nealy
    Free Member

    Hope not nealy , otherwise they are like an armadillo …. Hard on outside soft on the inside.

    Better than a Dime bar, smooth on the outside and crunchy on the inside…I like armadillos!

    Anyway…see below some facts about metallurgy from here > http://www.almax-security-chains.co.uk/index.asp?pg=26


    Through Hardening – This is a by-product of case hardening and is NOT A GOOD thing, for a security product, as it makes the material BRITTLE. Yes you can make metal very, very, hard, however the harder it is the more brittle it becomes. This leaves the chain susceptible to thieves, utilising sudden shock impact methods to breach the chain. To ensure that this does not occur, very precise measurements of various elements have to be used. We make sure that every chain, almax manufacture keeps it’s ductile core. We do not through harden our chains.

    Case Hardening – This is where the metal has a ‘case’around it, which is harder than the inside. This is done in large ovens, heating the material, to strict temperatures, for exact timings whilst adding various elements. We cut no corners, at any stage of manufacture, this means using more man hours, which is more expensive but it’s only by ensuring that every link, has exactly the right case hardening, every time, do you obtain an Almax quality product.
    Plating – This is the final process on the chain. Our chains are plated by hand with zinc, and then we increase corrosion resistance by passivating them. They are then immediately de-embrittled, this gives maximum protection. If any of these steps are missed, This can make the chain susceptible to either impact or pressure attacks. We at Almax have put procedures into place to ensure that the plating of our chains is done to the most exacting standard. Which again is more expensive, but the only way to produce the quality, that is the Almax chain.

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