Experimental Investigation to Analyze the Mechanical and Microstructure Properties of 310 SS Performed by TIG Welding

Table 4

Analysis of variance for hardness.

Source	DF	Adj SS	Adj MS	F value	value	% contribution
Regression	3	26.2900	8.7633	42.45	0.001
Welding current	1	23.2067	23.2067	112.41		84.93
Gas flow rate	1	0.2817	0.2817	1.36	0.295	1.031
Welding voltage	1	2.8017	2.8017	13.57	0.014	10.25
Error	5	1.0322	0.2064			3.77
Total	8	27.3222