A Material Selection Diagram (MSD) is an engineering drawing which shows the material selection information and specification of the piping and equipment in the process and utility facility that is a step in the process of designing any physical object of the material. The main goal of Material Selection is to minimise cost while meeting product performance requirements, and the systematic selection of the best material for a given application begins with properties and costs of candidate materials. A MSD is normally developed from simplified Process Flow Diagrams (PFDs) by the Process Engineer, Material Engineer and Metallurgist of a project. The Material Engineer uses the Material Selection Diagram to assign a line class and specification to each line on the Piping and Instrumentation Diagram (P&ID) (or Process Engineering Flow Scheme (PEFS)).
Related Definitions in the Project: The Engineering; Mechanical Engineering; Piping and Pipeline Engineering; Detailed Design and Engineering Deliverable; Technology
