Krause, Handfield, & Tyler (2007) with the objective of determining the relation between social capital and performance, a study has been investigated on the social capital accretion with the development efforts, commitment, key capitalization of buyers.They consider how do buying firms guarantee about long-term relationships, cognitive capital (goals and values), structural capital (information sharing, supplier assessment, supplier development), and relational capital (relationship length, buyer dependence, supplier dependence), and how these dimensions relate with the financial performance in improving cost, quality, delivery, flexibility and innovations. They have collected data from buying employment officers and suppliers in the automotive and electronics industries who’s with prior experience on improving industry’s performance. This work also strengthens the notion of different dimensions of social capital that are useful in interpretive structures, in terms of structural, relational and cognitive dimensions, which are more probable in supply chains. Collected data has been supported for the theory and proved that purchases by automotive and electronics industries, with the commitment of buyers and suppliers, social capital deposits can improve the company’s purchasing. Apart from this, findings showed that the structural and relational capital relationships are different depending on the type of performance improvement that is believed to be affected. Their progress demonstrates that the commitment between established goals of performance is an important complementary situation, to provide values for buyers who want to deposit social capital with suppliers. Further, Krause et al., (2007) suggest that the different scopes of social capital have distinctive effects depending on performance goals: cost and total cost, quality, delivery, and ?exibility. This research indicates that social Capital is a promising theory for researches, as well as focus on creating and sharing knowledge in various types organizations, where social capital results such as quality and cost.