Weldability Investigation and Optimization of Process Variables for TIG-Welded Aluminium Alloy (AA 8006)

Table 15

Response table for S/N ratios (hardness) (larger is better).

Level	Peak current (Amps)	Base current (Amps)	Welding speed (mm/min)
1	30.84	33.47	30.79
2	31.60	31.86	31.96
3	32.35	29.46	32.04
Delta	1.50	4.01	1.26
Rank	2	1	3