An article describes a factorial experiment designed to determine factors in a high-energy electron beam process that affect hardness in metals. The first factor is the travel speed in mm/s (three levels: 10, 20, 30). The second factor is the accelerating voltage in volts (three levels: 10, 25, 50). The outcome is Vickers hardness. There were six replications for each treatment. The data set is below. PLEASE show me how to do this in R. Thank you

A B Hardness
10 10 875
10 10 896
10 10 921
10 10 686
10 10 642
10 10 613