what metal

i have some round bar with the markings
60681/3S144D
any help appreciated

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I'm inclined to think the numbers are a heat number, and without the certification they mean nothing. The best you can do is determine what type of material it is, aluminum, stainless, steel of some kind. Does it have scale? What color is it? Heavy? Light? You didn't provide much to go on.
Harold
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