1040 vs 1045 Steel Comparison
2021-9-17u2002·u20020.05%. Carbon content of both steel grades determines the last two digits of their grade number. The carbon content of 1040 steel is 0.40%, while 1045 has a carbon content of 0.45%. The first digit '1' identifies that they are both carbon steels, and the second digit '0' identifies that there were no …
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