| total stress | หน่วยแรงรวม |
| ultimate strength | กำลังประลัย |
| upstream | เหนือน้ำ |
| welded strength | กำลังรอยเชื่อม |
| working stress | หน่วยแรงใช้งาน |
| working stress design | การออกแบบโดยวิธีหน่วยแรงใช้งาน |
| yield strength | กำลังคราก |
| yield stress | หน่วยแรงคราก |
| A Sheet Metal Screw | (english) Sheet metal screws with (a) sharp-pointed ends; and (b) fewer threads per inch than type AB screws; and (c) deeper threads with bettere gripping power than type AB. The industrial Fasteners Institue incorrectly labes type A an “obsolete” thread though it is universally preferred in 18-8 stainless over type AB, especially by the marine industry. |
| 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. |