When is the full shear strength of an MS20470D rivet obtained?

The full shear strength of an MS20470D rivet is achieved after a period of age hardening. This type of rivet, commonly made from aluminum alloy, undergoes a specific process called aging, which enhances its material properties over time. While rivets achieve some level of strength immediately upon installation, the complete and optimal shear strength develops as the rivet undergoes age hardening, during which the material continues to strengthen as its crystal structure stabilizes.

Age hardening is a critical process for certain aluminum alloys, where heat treatment is applied initially, followed by a natural aging period at room temperature that further increases the rivet's strength and hardness. This process is essential for high-performance applications where the structural integrity of the joint is paramount for safety and reliability. Each rivet type has its own specific aging characteristics and timelines, making understanding the aging process key for proper rivet usage in sheet metal structures.