Japanese Standard (9)

　　STK500 is a Japanese material grade and executive standard (JIS-G3444-2006_ Carbon Steel Pipe for General Structures). Mechanical properties: tensile strength ≥ N/mm2500, yield ≥ N/mm2355, chemical composition: C ≤ 0.24Si ≤ 0.35Mn0.3-1.3P ≤ 0.04S ≤ 0.04. The material is equivalent to Q355 material in China.

　　10. The SM520B steel plate belongs to the Japanese standard low alloy high-strength structural steel plate. The SM520 steel plate is similar to the Q355 series steel plate in the national standard. SM520 steel plates of the same series: SM520A, SM520B, SM520C, SM520D. Thickness 8-150mm: yield strength MPa: ≥ 365; Tensile strength MPa: 520-640; Elongation%: ≥ 19



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