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  1. MP25PK

    4140 vs 4130

    Hey Guys: I am looking for some more detailed information about the difference between 4130 and 4140 alloy. What if a tube size is 4130 .750 OD X .156 W (.438 ID) vs 4140 7/16" outside diamter x 14 gauge (.083") Now i know that 4140 has a higher carbon content than 4130 but if you have a...

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