Frangibility
![A plaque marking the frangible section of a London pavement.](/Images/godic/202501/14/Smoke_Outlet3458.jpg")
![A sequence of photos showing a frangible bullet fracturing when subjected to high velocity strain waves](/Images/godic/202501/14/Frangible_bullet_stress_test3459.jpg")
A material is said to be frangible if through deformation it tends to break up into fragments, rather than deforming elastically and retaining its cohesion as a single object. Common biscuits or crackers are examples of frangible materials, while fresh bread, which deforms elastically, is not frangible.