Today, as global competition in the business world grows, companies need to have a close relationship with their suppliers in order to survive and achieve reasonable profits. Researchers have recently examined some models for supplier selection, with less attention to the determination of collaboration pattern with selected partners. Despite much research on the types of collaboration models, their features, requirements and achievements, providing a comprehensive and uppropriate model for selecting the most appropriate type of relationship between the two partner organizations has not been sufficiently considered. Generally, supplier-buyer collaboration patterns include outsourcing, strategic alliance, joint investment and ownership. The purpose of this research is to design a model that determines the appropriate collaboration model according to the product characteristics, business conditions and goals of the organization. The model uses profit, opportunity, cost and risk structure, which is a comprehensive and useful model for strategic decisions. In this research, the choice of collaboration model between two partner organizations is investigated in order to design radar components. By library study and interviewing with the experts of the Iranian Defense Industry Organization, the factors influencing the selection of the appropriate cooperation model for the relationship between the two partner organizations were identified and prioritized. A Hierarchical Analysis Process Model (AHP) is designed to prioritize the relevant criteria and sub-criteria. Pairwise comparisons were made according to the experts' opinion and the results were analyzed using SuperDisign software.