International Journal of Metals

Research Article

Optimization of Conversion Treatment on Austenitic Stainless Steel Using Experimental Designs

Table 5

Fractional factorial design (2^6-1): variables, their levels, and data of the responses (SS and ).


No.	H₂SO₄ %	(°C)	Na₂S₂O₈	C₃H₄O %	Treatment time (min)	Surface state	SS
No.			g/L				(m²/m²)

1	0.2	40	0.5	0	10	Microball	40.20	0.76
2	2	40	0.5	0	10	Sanded	15.10	0.45
3	0.2	70	0.5	0	10	Sanded	226.00	0.94
4	2	70	0.5	0	10	Microball	8.00	0.83
5	0.2	40	1.5	0	10	Sanded	131.20	0.90
6	2	40	1.5	0	10	Microball	6.40	0.27
7	0.2	70	1.5	0	10	Microball	160.10	0.92
8	2	70	1.5	0	10	Sanded	97.00	0.89
9	0.2	40	0.5	0.25	10	Microball	19.70	0.54
10	2	40	0.5	0.25	10	Sanded	83.70	0.31
11	0.2	70	0.5	0.25	10	Sanded	65.70	0.75
12	2	70	0.5	0.25	10	Microball	44.90	0.66
13	0.2	40	1.5	0.25	10	Sanded	95.30	0.71
14	2	40	1.5	0.25	10	Microball	44.70	0.46
15	0.2	70	1.5	0.25	10	Microball	29.20	0.76
16	2	70	1.5	0.25	10	Sanded	102.40	0.61
17	0.2	40	0.5	0	30	Sanded	164.70	0.91
18	2	40	0.5	0	30	Microball	5.30	0.75
19	0.2	70	0.5	0	30	Microball	142.80	0.94
20	2	70	0.5	0	30	Sanded	136.10	0.96
21	0.2	40	1.5	0	30	Microball	46.70	0.94
22	2	40	1.5	0	30	Sanded	139.60	0.94
23	0.2	70	1.5	0	30	Sanded	119.50	0.91
24	2	70	1.5	0	30	Microball	37.10	0.92
25	0.2	40	0.5	0.25	30	Sanded	47.40	0.77
26	2	40	0.5	0.25	30	Microball	54.20	0.73
27	0.2	70	0.5	0.25	30	Microball	10.20	0.49
28	2	70	0.5	0.25	30	Sanded	107.80	0.82
29	0.2	40	1.5	0.25	30	Microball	60.50	0.79
30	2	40	1.5	0.25	30	Sanded	146.40	0.84
31	0.2	70	1.5	0.25	30	Sanded	25.60	0.70
32	2	70	1.5	0.25	30	Microball	22.40	0.88