Our shop mainly deals with common steel (S355) and chrome-moly (42CrMo). To this day, I haven't found a realiable method to tell the difference between the two when using hot rolled bars. I have tried toughness testing (hammer-rod etc). and spark testing ,but I simply cannot tell the difference. Taking a chip with the machine seems to be the only way (machined chromoly surface is brighter). Of course the steels should be stored separately, but it simply does not work here.
What's your suggestion?
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12-16-2015, 03:52 AM #1
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Distinguish between structural steel (S355) and Cromoly (CrMo)
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12-16-2015, 11:27 AM #2
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Re: Distinguish between structural steel (S355) and Cromoly (CrMo)
A spark test should do it. Did you try comparing the sparks to known samples? I know of a guy who has a key ring of maybe a dozen different steels, labeled for spark comparison.
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