Abstract
The influence of sulfur content on the notch sensitivity of electroformed nickel was determined by Charpy impact tests. Specimens containing greater than 200 ppm sulfur exhibited severe embrittlement and therefore are highly notch sensitive. A modified Izod test specimen containing the same joint configuration as the plated part described in the report was designed and evaluated. Results showed that this test could serve as an indicator of the notch sensitivity of the joint and that it could be used for product certification. As additional benefits, the Izod specimen gives assurance that the plated bonds comprising the joint are sound and that no planes of weakness exist. Because hardness is a direct function of sulfur content, a rough approximation of the sulfur content in deposits can be made by checking hardness.
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