The gloss of the excessively oxidized cold coil steel is insufficient.

The surface gloss is different, the part is brighter, the part is darker, and the gloss between the upper and lower surfaces may be different.

stripe

A straight line along the rolling direction of the surface of the excessively oxidized cold coil steel has a different color than the steel strip.

The excessively oxidized cold coil steel is stagnant for too long in the furnace and the surface is excessively oxidized, resulting in a gray surface on the steel strip. Sometimes it will appear rough spots on the face;

Due to insufficient dew point or unstable atmosphere in the furnace, the surface of the excessively oxidized cold coil steel is bluish, yellowish and blackened.

GRADE	C% max	Mn% max	P% max	S% max	Alt% min	Ti max
SC2	0.06	0.35	0.025	0.025	0.015	0.20

excessively oxidized cold coil steel surface presents a brighter color, mechanical properties do not meet the requirements

Due to the rough edges of the burrs caused by the cutting, a small serrated crack is generated at the edge of the excessively oxidized cold coil steel.

excessively oxidized cold coil steel