Permanent Mold casting uses two molds that are designed for easy preci – McqOptions

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1.	Permanent Mold casting uses two molds that are designed for easy precise opening and closing. The materials behind the making the mold are_____________
A.	Nickel and calcium
B.	Cast iron or steel
C.	Tungsten and steel
D.	Plastic material
Answer» C. Tungsten and steel

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