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 Čelik

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mentalist fenky



Posts : 65
Join date : 2016-02-29

PostSubject: Čelik    Fri Mar 04, 2016 8:17 am

U koje vrijeme je izmišljen čelik. Čelik je zapravo željezo sa malom primjesom ugljika koliko sam ja čuo
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Marko Muić
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Posts : 74
Join date : 2016-02-24

PostSubject: Re: Čelik    Fri Mar 04, 2016 12:14 pm

Pronađen je čelik još iz antičkog doba star 4000 godina. Postoji ugljični čelik i legirani. Ovisi o sastavu.
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