Physical properties
1. Color: Brass wire is yellow, while red copper wire is rose in color.
2. Density: The density of brass wire is slightly greater than that of red copper wire, but the difference between the two is not significant.
3. Hardness: Brass wire is relatively hard, while red copper wire is relatively soft.
4. Electrical conductivity: The electrical conductivity of red copper wire is superior to that of brass wire because of its higher purity.
