Carbon structural steel plate ASTM A283 Grade B owned the minimum yield strength at 185 Mpa,and the tensile strength shall be within 345-450Mpa.The minimum elongation is 25% for steel plate A283GrB when rolling.
A283 Grade B steel plates furnished shall conform to the requirements of the current of specification a6/a6m. In the process, A283 Grade B shall be made by one or more of following processes: open hearth, basic oxygen or electric furnace.
A283GrB Chemical composition:
C(<=16mm):<=0.17 C(>16mm):<=0.2 Mn:<=0.90 S :<=0.040 P :<=0.035
A283GrB Mechanical properties:
Tensile Strength σb(MPa) : 360-510(thickness under 3mm);340-470 (thickness above 3mm)
Yield Strength σ0.2(MPa): >=235 (thickness under 16mm); >=225(thickness above16mm)
Elongationδ5(%): 16(thickness under 1.5mm); 17(thickness between 1.51-2.00mm);18(thickness between 2.01-2.50mm );19(thickness between 2.51-2.99mm);24 (thickness above 3mm)
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