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SA572 Gr.65 and SA572 Gr.450 are exactly the same

SA572 Gr.65 and SA572 Gr.450 are exactly the same

SA572 Gr.65(450) American standard high-strength low-alloy niobium-vanadium structural steel is widely used for bridge riveting and bolting structural parts or welding structural parts for other purposes.

Chemical composition of SA572 Gr.65(450) steel plate:

C Si Mn P S Nb
≤0.23 ≤0.4 ≤1.65 ≤0.04 ≤0.05 0.005~0.05

SA572 Gr.65(450) steel plate mechanical properties:

Grade Mechanical properties
SA572 Gr.65(450) Re(MPa) ≥450  
Rm(MPa) ≥550  
A200(%) ≥15 A50≥17%

SA572 Gr.65(450) steel plate executive standard: ASME standard SA-572/SA-572M is completely equivalent to ASTM standard A572/A572M.

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