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B550NQR1 atmospheric corrosion resistant steel round bar Packaging
B550NQR1 steel round bar is low-alloy steel corrosion damage in the atmosphere. B550NQR1 atmospheric corrosion resistant steel bar, can be achieved by the addition of copper and phosphorus has been significantly improved, and to improve the effectiveness of the most significant Canadian copper. Excellent weather resistance is due to the B550NQR1 steel surface to form a dense layer of rust, the steel substrate and the air of isolation and effectively stop the rust continues to grow.
B550NQR1 atmospheric corrosion resistant steel steel round bar has been widely used in building structures, vehicles, bridges, railings and the like atmospheric corrosion resistance is required field. B550NQR1 steel bar can also used to the manufacture of containers, rolling stock, oil derrick, harbor construction, oil platforms and oil equipment chemical structure containing hydrogen sulfide and other corrosive media container.
B550NQR1 atmospheric corrosion resistant steel round bar Chenical composition(%)
C≤0.19 Mn:0.80-1.25 Cr:0.40-0.65 Si:0.30-0.65 N≤0.010 S≤0.040 Cu:0.25-0.40 P≤0.05 Ni≤0.40
B550NQR1 steel round bar Mechanical property
Tensile strength, kis [MPa]:435-485 Yield strength, min, kis [MPa]:290-345 Elongation in under [50mm], min, %:21 Elongation in under [50mm-200mm], min, %:18
Packaging Detail: In bundle or Container
Payment Item: 30% TT, or LC and TT
Delivery Time: 30 days generally
Delivery Condition
AR(As Hot Rolled), N(Normalized), T(Tempered), Q(Quenched), TMCP, Q+T(Quenched and Tempered), UT(Ultrasonic Test:ASTM A435,ASTM A578-C/B/A,EN10160-S0E1,S1E2,S2E3,S3E4), Impact Test, PWHT(Post Weld Heat Treatment), HIC, Z Test(Z15, Z25, Z35)
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