Which feature primarily contributes to the strength of CGI components in an engine?

The characteristic that primarily contributes to the strength of Compacted Graphite Iron (CGI) components in an engine is increased tensile strength. CGI is specifically engineered to possess a unique microstructure that combines beneficial properties of both cast iron and steel. This results in enhanced strength and durability, making CGI an optimal choice for various engine components that require high load-bearing capabilities, such as cylinder blocks and heads.

The increased tensile strength allows CGI components to withstand higher stress levels without deformation, which is crucial for engine performance and longevity. Enhanced tensile strength also offers better resistance to cracking and wear, thereby improving reliability and efficiency over time.

While other features may play roles in specific applications or conditions, it is the increased tensile strength that primarily defines CGI's capability to handle the demanding environment of an engine, thereby benefiting overall engine performance.