Transcription of Steel grades according to American standards - …
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Chemical compositionA36 - - 04 Grade - 04 Grade - 04aGrade - 04 Grade - analysisMechanical propertiesA36 - 04bA36 250 [36]400-550 [58-80]2021A572 - 04 Grade 42 290 [42] 415 [60]2024 Grade 50 345 [50] 450 [65]1821 Grade 55 380 [55] 485 [70]1720 Grade 60 415 [60] 520 [75]1618 Grade 65 450 [65] 550 [80]1517A588 - 04 Grade B 345 [50] 485 [70]1821 Grade C 345 [50] 485 [70]1821A709 - 04aGrade 36 250 [36]400-550 [58-80]2021 Grade 50 345 [50] 450 [65]1821 Grade 50S345-450 [50-65] 450 [65] - 04 Grade 50 345 [50] 450 [65] [70] 54 [40]Grade 65 450 [65] 550 [80]151721 [70] 54 [40]A992 - 04aA992345-450 [50-65] 450 [65] strength ReMPa [ksi]Tensile strength RmMinimum elongationRatio Re / RmNotch impac
Chemical composition A36 - 04b A36 0.26 0.05 0.04 ≤0.40 A572 - 04 Grade 42 0.21 ≤1.35 0.05 0.04 ≤0.40 Grade 50 0.23 ≤1.35 0.05 0.04 ≤0.40
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