A Comparative Analysis among Quenched, Tempered, and Stepped Cooled TIG Welded SS-304 Plates Based on Tensile Strength, Hardness, and Microstructural Appearance

Table 6

A comparative analysis among different mechanical properties.

Samples	Ultimate tensile strength (MPa)	Elongation (mm)	Hardness
			Base metal zone	HAZ	Welded zone
Sample 1	470	6.6	191.33	196.67	202.67
Sample 2	434	6.5	191.33	190	220
Comparative analysis with respect to sample 1	−7.6%	−1.5%	Same	−3.4%	9%
Sample 3	469	8.1	220.33	224	222
Comparative analysis with respect to sample 1	−0.2%	23%	15%	14%	10%
Sample 4	441	5.4	208	217	212.33
Comparative analysis with respect to sample 1	−6.1%	−18%	9%	10%	5%
Sample 5	437	5.2	196.67	204	204.33
Comparative analysis with respect to sample 1	−7%	−21%	3%	4%	1%