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C40 steel according to ISO norm

C40 steel according to ISO norm

C40 steel according to ISO norm

(OP)
Hi,

Could anyone help me to find out what is equivalent european steel grade to  C40 steel according to ISO norms?
I am going to use C45 round bar in accordance EN 10204, is it equivalent?

Thanks in advance.  

RE: C40 steel according to ISO norm

C45E (1.1191) or C45R (1.1201) according to EN 10083-2 are not exactly equivalent to C40 according to ISO 683.  C40E (1.1186) or C40R (1.1189) are the equivalent grades, depending on the desired S content: E grades have 0.035% max and R grades have a specified range of 0.020-0.040%.  EN 10204 is not a product specification-- it just describes the required certification documents.  The carbon content of C45 is 0.42-0.50 whereas for C40 it is 0.37-0.44, so while they are very similar, they are not exactly equivalent.

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