#1 Temper (Full Hard) - .069 and thinner Rockwell B-90 min. .070 and heavier Rockwell B-84 min. This temper is not intended for cold forming.
#2 Temper (Half Hard) - Rockwell B-70 min. and B-85 max (approx). This temper can be bent 90 degrees across the direction of rolling around a radius equal to its thickness.
#3 Temper (Quarter Hard) - Rockwell B-60 min. and B-75 max (approx). This temper can be bent 180 degrees across the direction of rolling over one thickness of the strip and 90 degrees in the direction of rolling around a radius equal to its thickness.
#4 Temper (Soft) - Rockwell B-65 max (approx). This temper can be bent flat upon itself in any direction.
#5 Temper (Dead Soft) - Rockwell B-55 max (approx). This temper can be bent flat upon itself in any direction.
