Centrifugal Casting Glossary: A collection of centrifugal casting terminology. Due to the technical nature of centrifugal casting, numerous specific terms are used to describe its aspects precisely. I.A.W. (In Accordance With): Commonly used in specifications, this indicates compliance with certain standards, such as Gould’s 1213 spec. FM/FM (Finished Machined) and RM/RM (Rough Machined): These terms describe the type of finish a part receives after machining. RMS (Root Mean Squared): A statistical measure used to define the surface finish quality of a part. AC/A/C (As Cast): Describes a part that is left with the surface finish it had upon removal from the mold without any post-casting machining. TFA/TFT (To Finish At, To Finish To): Specifies the final dimensions that a part should reach after processing. RFQ (Request For Quote): Indicates a customer’s request for a price quote for specific parts. UOM (Unit of Measure), LN (Length), QTY (Quantity): Terms used to specify the dimensions and quantities in engineering and production. REF (Reference), PC/PCS (Piece): Used for tracking and inventory purposes, referring to individual parts or castings. PO (Purchase Order): A document confirming a purchase, detailing the products or services ordered. TOLR (Tolerance): The permissible limit or variation in dimensions that a part can have. BHN (Brinell Hardness Number): A scale indicating the hardness level of materials. UNS (Unified Numbering System): Identifies the chemical compositions of metals. AISI (American Iron and Steel Institute), ASTM (American Society for Testing and Materials), SFSA (Steel Foundry Society of America): Various organizations involved in setting industrial standards. FOB (Free On Board): Indicates that the buyer assumes responsibility for delivery costs and risks once the product is shipped. SS (Stainless Steel): A type of steel known for its corrosion resistance, used in making durable castings. Delta Centrifugal® is dedicated to providing high-quality centrifugal casting products and clear, understandable information to assist both new and existing clients. For detailed explanations or inquiries, please contact Delta Centrifugal®.