Ise failure? B. criteria. Given the material Sy, ox, oy and xxy find the safety factors for all the applicable Pure aluminum Al, Sy= 30 MPa, ox = 10 MPa and oy=-10 MPa and txy = 0 MPa. Knowing that o1=10 MPa and 2=-10 MPa and tmax = 10 MPa ductile or brittle??