Assertion: age hardening | /r/CapableOf | raise the strength
Facets:
value: to wear
type: PURPOSE
value: to fatigue
type: PURPOSE
Source sentences:
text: In addition, hardening, tempering, age hardening, and chemical heat treatment are applied to various machine parts and tools to raise the strength, hardness, resilience, and resistance to fatigue and wear; articles are also annealed to reduce residual stresses.