SG I - GB /T 1504-2008

SG I Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Mo	Mg
Minimum Value	2.9	0.8	0.4	-	-	0.2	0.2	0.04
Maximum Value	3.6	2.5	1.2	0.25	0.03	0.6	0.6	-

SG I Mechanical Properties

	Tensile Strength σ_b Mpa	Hardness HBW
Roll neck	≥320	（HSD） 32~50
Roll body		40~55

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!