Tensile Strength, Ultimate Tensile Strength

The maximum load, in tension, that a material can withstand before breaking.
It is calculated as a breaking load for a standard cross section area and measured in Newtons per square mm (Nmm-2) or Mega-Pascals (MPa).

Tolerance

The permissible limit, or limits, of variation to a specified parameter such as a dimension or weight per unit length usually expressed as 'plus' or 'minus' value on that quantity.

Tube Hollow, Hollow

Interchangeable terms for a hot finished semi-finished product from either an extrusion or piercing process.
They are the feedstock for cold drawing or cold reduced tube production.