1. A36 belongs to the American standard carbon structural plate, which implements the standard ASTM A36/A36M. This standard is suitable for riveting, bolting and welded structures used in bridges and buildings, as well as general-purpose structural steel quality carbon steel sections and steel plates. And bar steel, its chemical composition is, C: ≤ 0.25, Sis0.40, Mn: ≤ 0.80-1.20, P ≤ 0.04, S: ≤ 0.05, Cu20.20 (when copper-containing steel is specified).
Carbon structural steel plates are mainly ordinary carbon structural steel plates, which are mainly different from high-strength plates, boiler plates, shipbuilding plates, pressure vessel plates, ocean platform plates, bridge plates, low alloy plates, corrosion-resistant plates, stainless steel plates, etc.
In most cases, carbon structural steel is not heat treated and is used directly as supplied. Generally, Q195, Q215 and Q235 steel have low carbon mass fraction, good welding performance, good plasticity and toughness, and also have a certain strength. , often rolled into plates, steel bars, welded steel pipes, etc., used in bridges, buildings and other structures and in the manufacture of ordinary rivets, screws, nuts and other parts. Q255 and Q275 steel have slightly higher carbon mass fractions, higher strength, better plasticity and toughness. Well, it can be connected, generally rolled into shaped steel, steel bars and steel plates are used as structural parts and parts such as connecting rods, gears, couplings and pins for manufacturing simple machinery.
