What is C40 H30 N2O4 means ?
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EN 1.0511 (C40) Non-Alloy Steel. EN 1.0511 steel is a carbon (non-alloy) steel formulated for primary forming into wrought products. Cited properties are appropriate for the normalized condition. 1.0511 is the EN numeric designation for this material. C40 is the EN chemical designation.
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