Amyloid fibrils are self-assembly and self-aggregated molecular structure related to the fatal diseases such as Alzheimer’s disease, Parkinson’s disease, and type ?? diabetes. The β2-microglobulin (β₂m) is one of the amyloid fibrils, which induce devastating effects of dialysis-related amyloidosis. It deposits as amyloid fibrils within joints during long-term hemodialysis treatment. The molecule structure of the β₂m is concerned with experimental research. It has 99 residues before amyloidosis. In this research, we consider the K3 segment(residue 20-41) whose pdb id is 2E8D, whose cross-section exhibits U-shape. Especially, the hydropathic peptide (²¹NFLNCYVSGFH³¹) is believed to play an important role in the amyloidosis of the β₂m. Therefore, in this research, the amyloid fibril of β₂m whose sequence is NFLNCYVSGFH is investigated. We construct the amyloid fibril of β₂m varying thickness with various number of filaments, and obtain the helical pitch of the fibrils using Molecular Dynamic Simulation technique. Moreover, the mechanical properties such as elastic modulus are calculated by using Elastic Network Model with normal mode analysis. We anticipate that this research sheds light on the understanding the structure-property-function relationship of the amyloid fibrils.