ST12 ST13 ST14 ST15 Carbon Steel Cold Rolled Coil

ST12-ST15 are German DIN standard carbon steel cold-rolled coils, which are divided into stamping levels: ST12 is a common grade, suitable for simple forming and structural parts; ST13 has medium stamping properties and is used for general parts such as home appliance housings; ST14 is a deep drawing grade with excellent processing performance, suitable for automobile fuel tanks and complex containers; ST15 (partial standards) is an ultra-deep drawing grade with the highest ductility, specially used for high-precision stamping processes (such as precision electronic parts).