1. Direct Material Cast. The cost of standard purchased parts can be obtained from the purchasing section. The raw material chargeable to a product is that in the rough state and includes all scrap removed. Material can be in the form of sheet metal, bar stock, forging, or casting, plastic etc. The weight of the material can be determined from the drawing of the part. An irregular part is divided into simple sections to calculate its volume. Volume is multiplied by density of the material to find its weight. The weight of a part multiplied by the unit cost of the material gives the material cost per price. If the unit cost covers only the purchase price of the material, the material cost is multiplied by one or more additional factors to account for bulk losses, purchasing and handing costs.