Y-Z
Young's Modulus
Also known as the longitudinal elastic modulus, it refers to the ratio of stress to strain in a material when it is deformed elastically along its length (i.e., under tension or compression). A higher Young's modulus indicates that a material is "stiff, less likely to deform, and less likely to stretch," while a lower Young's modulus means the material is "soft, more easily deformed, and more likely to stretch."