Glossary

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ULTIMATE STRENGTH

(See Tensile Strength)

UTILITY SHEET ALUMINUM

Mill finish coiled or flat sheet of unspecified composition and properties produced in specific standard sizes and suitable for general building trade usage.

UPSETTING

(1) A metal working operation similar to forging. (2) The process of axial flow under axial compression of metal, as in forming heads on rivets by flattening the end of wire.