| Acid Embrittlement | (English) Embrittlement during pickling due to absorption of hydrogen. |
| Abrasion 1 | (english) The displacement and/or detachment of metallic particles from a surface as a consequence of being exposed to flowing solids, fluids or gases. The process of rubbing, grinding, or wearing away by friction. |
| Abrasion 2 | (english) The process of rubbing, grinding, or wearing away by friction. |
| Adapti Investment Casting Process | (english) A lost wax process employing one of three methods; centrifugal, vacuum or gravity-pouring casting. |
| Addition Agent | (english) 1) Any material added to a charge of molten metal in bath or ladle to bring alloy to specifications, 2) reagent added to plating bath. |
| Age Hardening | (english) Hardening by aging, usually after rapid cooling or cold working. The term as applied to soft, or low carbon steels, relates to a wide variety of commercially important, slow, gradual changes that take place in properties of steels after the final treatment. These changes, which bring about a condition of increased hardness, elastic limit, and tensile strength with a consequent loss in ductility, occur during the period in which the steel is at normal temperatures. |
| พระราชบัญญัติวิศวกร พ.ศ. 2542 | Engineering Act B.E. 1999 |
| Babbitt | (english) An antifriction metal alloy used for bearing inserts;made of tin,antimony,lead and copper. |
| BACK-UP RING | (english) A fabric or plastic device that is used with an o-ring or other gasket to prevent extrusion of the o-ring or gasket into an adjacent space or crevice |
| Backer (back-up plate) | (english) A “tool” or reinforcing part, which presses against the outer surface of an extrusion die, supporting it against the pressure of the extruding metal. The backer has an opening larger than the die aperture, allowing the extruded product to emerge without marring its soft surface. |