Joseph was a bit puzzled: "The hardness of brass shouldn't be that low, right?"
Sane hurriedly replied, "Your Highness, if we increase the zinc content, it will indeed raise the hardness, but at the same time, 'porosity' will occur, so..."
Joseph thought to himself, So you're using low-zinc brass—clearly you're not worried about the budget.
The price of copper is several times higher than that of zinc.
He sighed and said, "What you're referring to is 'dezincification'—the zinc in the alloy being anodically oxidized. Actually, just adding a bit of tin can prevent dezincification."
Sane immediately caught on and asked, "So, we sacrifice tin to protect the zinc?"
Joseph rubbed his forehead, "No, tin, through the bonds between atoms, 'holds onto the zinc,' preventing it from detaching easily..."
Sane just kept nodding, looking as if he had 'given up on treatment.'
As they spoke, the carriage had already passed the bustling shipways.
