Joseph was somewhat puzzled: "The hardness of brass shouldn't be this low, right?"
Sane hurriedly said: "Your Highness, if we increase the zinc content, it can indeed improve hardness, but it also causes 'porosity phenomenon,' so..."
Joseph thought to himself that they were using low-zinc brass; they really weren't stingy with 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,' meaning the zinc in the alloy is oxidized as an anode. Actually, adding a small amount of tin can prevent dezincification."
Sane immediately connected the dots: "It's about sacrificing tin to protect zinc?"
Joseph rubbed his forehead: "No, tin uses atomic bonds to 'hold onto' zinc, preventing it from easily falling off..."
Sane merely nodded continuously, displaying a look of having "given up on treatment."
While they talked, the carriage passed by the busy slipway.
