S355K2 steel plate is the European standard low alloy high strength steel plate, grade S355K2 in the 'S' expressed in the European standard alloy steel plate; 355 for the yield value of the steel plate for the minimum value of 355MPa; K2 expression of minus 20 degrees of impact work is not less than 40J (K expression of the requirements of 40J,2 expression of minus 20 ° impact). S355K2 is a European standard hot rolled structural steel products, the same series of other materials such as S355J0, S355K2, etc. S355K2 implementation of the EN10025 standard, the steel plate is delivered in the state of hot rolled, controlled tie, normalised or normalised rolled.
S355K2 steel plate chemical composition.
C: ≤0.24; Si: ≤0.60;
Mn: ≤1.70; P: ≤0.035;
S: ≤0.035; Cu: ≤0.60;
Mechanical properties of S355K2 steel plate.
Yield strength (Mpa): ≤16mm: ≥355;
16-40: ≥345;
40-63: ≥335;
63-80: ≥325;
80-100: ≥315;
100-150: 295;
150-200: ≥285;
200-250: ≥275;
250-400: ≥265.
Tensile strength (Mpa): 450-600.
Impact work: -20℃: ≥40J (plate thickness below 150mm).
Impact specimens:Specimens shall be processed and prepared in accordance with EN 10045-1. Furthermore, the following requirements shall apply:a) When the nominal thickness is >12mm, the specimen shall be machined to a standard 10mmX10mm, with one side of the specimen not more than 2mm from one of the rolled surfaces, unless otherwise specified in EN 10025-2 to EN 10025-6b) When the nominal thickness is <12mm, and a reduced width specimen is used, the minimum width shall be 5mm.
