Investigation of Initial Atmospheric Corrosion of Carbon and Weathering Steels Exposed to Urban Atmospheres in Myanmar

Table 1

Composition of carbon steel (SM) and weathering steel (SMA).

Material	Chemical composition (% by weight)
	C	Si	Mn	P	S	Cu	Cr	Ni	Nb
SM	0.17	0.32	1.39	0.016	0.012	—	—	—	—
SMA	0.12	0.39	0.9	0.008	0.006	0.36	0.61	0.22	0.014