Steel Grades

here is info on S275JR you can compare to your copy of ASTM A 36. note charpy requirement must be noted at time of inquiry.

http://www.corusgroup.com/file_source/StaticFiles/Business%20Units/CC&I/Products/Sections/Steel%20standard%20EN10025-04.pdf

http://www.standard.no/pronorm-3/data/f/0/01/38/7_10704_0/M-120r2.pdf

milo

Hello Habib,

You (and the supplier) are comparing different steel standards. S275JR is a European standard. ASTM A36 is an American standard. The yield stress is 275 MPa and 36 ksi respectively (or to put it in the same terms 40 ksi and 36 ksi respectively).

Check this site for additional information on various steels and their strength. You may want to review this site too. If you want to know more about the chemical composition of steel and how it affects ultimate strength, yield strength, notch toughness, weldability and a host of other properties, you could try searching the internet for "chemical composition of structural steel". It is far too broad a topic to be covered on this forum.

You didn't say what you needed the plate for. If ASTM A36 is adequate for the job, there is no advantage in obtaining a stronger steel.