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| >> GLOSSARY OF TERMS |
| S |
| SAE Abbreviation for Society of Automotive Engineers. This organization has specified common and alloy steels and copper vase alloys in accordance with a numerical index system allowing approximation of the composition of the metal. The last two digits always indicate the carbon content, usually within 0.05%. See AISI-SAE specifications. |
| SALT SPRAY TEST An accelerated corrosion test in which the metal specimens are exposed to a fine mist of salt water solution either continuously or intermittently. |
| SATIN FINISH (See Scratch Brushed Finish.) |
| SCAB (Scabby) - A blemish caused on a casting by eruption of gas from the mold face or by uneven mold surface; or occurring where the skin from a blowhole has partly burned away and is not welded. |
| SCALE (Refer to "scaling".) |
| SCALELESS BLUE (See "Black Oil Tempered Spring Steel.") |
| SCALING (1) Oxidation of metal due to heat, resulting in relatively heavy surface layers of oxide. (2) Removal of scale from metal. |
| SCALLOP (See Ear.) |
| SCALPING Machining the surface layers from ingots, billets and slabs before fabrications. |
| SCARFING Cutting surface areas of metal objects, ordinarily by using a gas torch. The operation permits surface defects to be cut from ingot, billets, or the edges of plate that if to be beveled for butt welding. See chipping. |
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