With a Youngs modulus of almost 1 TPa, graphene boasts incredible toughness due to the strength of the carbon-carbon bonding. Graphene however, has a fracture toughness of about 4 MPa/m, making it brittle and easy to crack. Graphene was later shown by the same group that discovered its fracture toughness, to have incredible fore distribution abilities, with about ten times the ability of steel.