Mechanical properties: st12 is the most common, the most basic steel number, in principle (steel mills regulations) can only be bent, forming, does not allow stamping. st12 mechanical properties: yield strength a MPa ≤ 280; tensile strength MPa ≤ 270 ~ 410; elongation at break (L0 = 80mm, b = 20mm) % ≥ 28

ST12 composition: carbon (C) ≤ 0.10, manganese (Mn) ≤ 0.50, sulfur (P) ≤ 0.035, sulfur (P) ≤ 0.035, sulfur (P) ≤ 0.035. 0.10, Mn ≤ 0.50, P ≤ 0.035, S ≤ 0.035, Alt a ≥ 0.020

ST12 is the German standard (DIN1623), the equivalent of EN10130 DC01, JIS SPCC

ST12 is a general cold rolled steel, ST13 stamping grade cold rolled steel. ST14 is deep drawing grade cold rolled steel

ST12: expressed as the most common steel grade, with q195, SPCC, DC01 grade material is basically the same

Symbol: ST-steel (Steel), 12-ordinary grade cold rolled thin steel

Surface quality: FC-advanced finishing surface, FB-higher level of finishing surface.