S355JR Low Alloy High Strength Steel Plate

S355JR steel is a European standard low alloy high strength steel plate, used in buildings, Bridges and so on. In the United States, China, Japan and other countries also have the same grade of steel, such as: China Q345B, the United States A572GR50, Japanese standard SM490B and so on.

 

Low alloy high strength steel plate under different standards

 

products
Model number	Q345B	A572 Gr 50	S355JR	SM490B
C (t≤16mm)	0.20	0.23	0.27	0.20
Si	0.5	0.40	0.60	0.55
Mn	1.7	1.35	1.7	1.6
P	0.035	0.04	0.045	0.035
S	0.035	0.05	0.045	0.035
Yield strength ReH/(N/mm2) (t≤16mm) min	345	345	355	395
Tensile strength Rm/(N/mm2) (3mm≤t≤16mm)	470-630	450	470-630	490-610
Elongation A/%(3mm≤t≤40mm) min	20	18	22	18

*The above data are from internal test results and do not represent accurate data.

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