[brey-king + tuh-nas-i-tee]
The tensile stress at rupture of a specimen (fiber, filament, yarn, cord, or similar structure) expressed as newtons per tex, grams-force per tex, or gram-force per denier. The breaking tenacity is calculated from the breakind load and linear density of the unstrained specimen, or optained directly from tensile testing machines which can be suitably adjusted to indicate tenacity instead of breaking load for specimens of known linear density. Breaking tenacity expressed in grams-force per tex is numerically equal to breaking length expressed in kilometers.
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