The Need for Engravabilityis the Reason for the Additive

•We talk about “Hardness” but
•Engravabilityis more than that……
•Grain Structure
•Ductility
•Cohesiveness

When you have large crystals……..
What you want……..……..may be different than what you get!

With smaller crystals……....
What you want…..…..…….is closer to what you get

Without “additive”, copper can be displaced as well as cut ............This copper can be pushed back into the cell