S355 steel plate is a European standard structural steel grade, according to EN 10025-2: 2004, material S355 steel plate is divided into 4 main quality grades.
The following letters and numbers explains the S355 steel plate meaning.
1,“S” is short for “structural steel”
2, “355” refers to the minumum yield strength value for the flat and long steel thickness ≤ 16mm.
3, “JR” means the impact energy value is minumum 27 J at room temperature (20℃).
4, “J0” can withstand the impact energy at least 27 J at 0℃.
5, “J2” related to the minumum impact energy value is 27 J at -20℃.
6, “K2” refers to the minumum impact energy value is 40 J at -20℃.
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