Optimization and Characterization Studies of Dissimilar Friction Stir Welding Parameters of Brass and Aluminum Alloy 6063 Using Taguchi

Table 3

Mean values and main effects of hardness (raw data).

Levels	Ntool (rpm)	Tpreheat (°C)	Straverse (mm/min)	Ppin
1	71.94	71.27	71.89	72.04
2	71.79	71.94	71.16	71.53
3	70.84	71.37	71.53	71.00
Delta	1.10	0.68	0.73	1.04
Rank	1	4	3	2

The bold values show the highest values.