The zinc bath in the hot-dip galvanizing process contains trace elements such as aluminum. The presence of these traces optimizes coating adhesion and improves the ductility of galvanized steel, galvanized steel coils and galvanized steel slit coils, enabling the material to form hundreds of products that we use every day.

In galvanized previous steel coil making generations, galvanized steel coil used to contain large, flowery crystalline patterns of zinc on the surface of the steel known as "spangle". Spangle resembles large hexagonal snowflakes.

Structural Grades	C	Mn	P	S	Cu	Ni	Cr	Mo	V	Cb	Ti	N
30,33,36,40	0.25	0.9	0.035	0.04	0.2	0.2	0.15	0.06	0.008	0.008	0.025
36T2,45-80	0.25	1.35	0.035	0.04	0.2	0.2	0.15	0.06	0.008	0.008	0.025
45T2	.02- 0.08	.30- 1.0	.03- .07	0.025	0.2	0.2	0.15	0.06	0.008	0.008	0.025	.01- .03