We shipped aluzinc steel coils at beginning of January. The quality is grade G550 full hard, and surface is of anti finger print.
Below table says the relation of tensile strength and hardness.
Grade G550 requies minimum tensile strength 550MPa (550N/mm2). We tested the aluzinc steel sheet, the hardness is 185.4HV. The corresponding tensile strength is 595MPa. It meets the quality requirement of grade G550.