Chemical composition detected by EDS analysis for Sample (1) and Sample (5).

Table 4: Chemical composition detected by EDS analysis for Sample (1) and Sample (5).

	Sample(1)		Sample(5)
Element	Wt.%	A%	Wt.%	A%
C	1.9	7.21	1.03	4.37
Si	4.68	7.6	4.21	7.63
Cr	30.7	26.91	23.89	23.39
Fe	51.82	42.31	70.6	64.37
Ni	0.91	0.71	0.27	0.23
Al	3.93	6.64	-	-
S	6.06	8.62	-	-
	100.00	100.00	100.00	100.00