Material Price v. Component Cost

Thermoplastics are sold by unit weight (e.g., $/lb, €/kg). However, the material cost for a plastic component must consider component volume and density of the plastic.  For thermoplastics, density is reported as ‘specific gravity.’ Specific gravity is the ratio of the density of the thermoplastic to the density of water (i.e., SGP = DP/DW).  The density […]