plot a 3D function with changing variables

Hi there! I'm trying real hard to plot the 3D yield function for the strain energy density failure criterion:

f = v^2 - y^2

Where y takes on the value 300

Where v takes on the values (0, 0.1, 0.3, 0.5)

Not sure which syntax to use in the plot3 tab even. Thanks for any help offered.