Is it true or false that all holes in titanium assemblies that are not chamfered must have an edge break?

The assertion that all holes in titanium assemblies that are not chamfered must have an edge break is indeed true. This requirement is primarily due to the properties of titanium as a material. Titanium is known for its susceptibility to stress concentrations at sharp edges, which can lead to cracking or failure, especially in high-stress applications such as aerospace components.

An edge break serves to remove the stress risers that sharp edges create, thereby enhancing the structural integrity of the assembly. By incorporating an edge break, the potential for crack initiation and subsequent propagation is significantly reduced, which is critical in maintaining the overall reliability and performance of aerospace structures.

While other options suggest variability based on design or that not all holes require an edge break, the consensus in aerospace standards emphasizes the necessity of edge breaks in non-chamfered holes to ensure safety and durability in critical applications. Thus, the requirement for an edge break in all cases aligns with best practices in aerospace manufacturing and maintenance.