Mold designers consider a variety of factors when selecting the mold metal including, machining ease, weld ability, abrasion resistance, hardness, corrosion resistance, and durability. Metals can range from the soft, low-melt-temperature alloys used in inexpensive, cast-metal, prototype molds to the porous metal used in vent inserts. Metals are chosen based not only on the cost, manufacturing, and performance requirements of the mold or component, but also on the experience and comfort level of the mold design and construction shop.










