Brittleness in Higher Strength Bolts

by Frank L. Gill,
Roger M. Hansen,

Serial Information: Journal of the Structural Division, 1966, Vol. 92, Issue 1, Pg. 89-100

Document Type: Journal Paper

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Abstract: The incidence of brittle behavior in bolts and studs heat treated to high strength levels (150 ksi to 250 ksi) is studied. The objective was to try to find a relationship between brittle behavior and the intrinsic characteristics of the bolt material. There was no suitable correlation of brittleness with strength or ductility but it was found that the notch tensile properties are a good indicator of relative brittle behavior. Assembly conditions and the physical geometry of the fastener were shown to be important to load carrying ability. Tests reported are all based on static loading.

Subject Headings: Brittleness | Bolts | Static loads | Load factors | Load tests | Thermal properties | Studs |

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