Laser Treatment for Strengthening of Thin Sheet Steel

Table 7

Parameters of steel and laser-treated surfaces used to calculate elastoplastic deformation of samples.

Material	Modulus of elasticity, E (GPa)	Shear modulus, G (GPa)	Yield strength, σ0.2 (MPa)	Ultimate strength, σB (MPa)	Poisson’s ratio (ν)
Base metal (steel C22E)	200	78.1	275	450	0.28
Laser-treated layer	210	82	412	665	0.28