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Grades d'acier à faible teneur en carbone
Acier à faible teneur en carbone is also called low carbon steel. Low carbon steel: C≤0.25%. The chemical composition and mechanical properties of different grades of low carbon steel are different from each other, and they have a significant impact on structural safety and economy.
Comparison of Low Carbon Steel Core Standard System
ASTM standard:
A572 Grade 50: Yield strength ≥345MPa (bridge special)
A516 Grade 70: -46℃ low temperature impact toughness (pressure vessel)
EN standard:
S355JR: Minimum impact work of 27J (European standard for building steel structure)
GB/T difference:
Q345R specially refers to the Steel for pressure vessels (P, S content ≤ 0.025%)
