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Cold Rolled Rail Steel

Grade and Application

Currently there is one kind of cold rolled rail steel produced in LY Steel, it has good drawability and stable chemistry as well as good thickness accuracy, and has been widely used in guide in furniture and office supplies.

 Grade Application
LGDGCommon rail
LGSG1,LGSG2Glossy rail

Product Dimension

Nominal thickness:0.3~2.5mm; Nominal width:850~1585mm;

Chemistry

GradesChemistry%
CSiMnPSAlt
LGSG1≤0.22≤0.3≤0.4≤0.035≤0.010≥0.015
LGSG2≤0.22≤0.3≤0.6≤0.035≤0.010≥0.015
LGDG≤0.06≤0.03≤0.3≤0.025≤0.010≥0.015

Physical Property

GradeYield strength MpaEensile strength MPaElongation after fracture A50% Not less thanHardness HRB
LGSG1≥280370-5002560~75
LGSG2≥300≥4303060~75
LGDG160-260280~38034

Surface Quality

GradingCodeFeatures
 High-grade surface finishingFB( 03)A few defects without affecting formability and coating adhesion are allowable on surface, eg. Slight scratches, identation, pitted spot, roll mark and oxide color.
 Higher-grade   surface finishingFB( 04)None of any visible obvious defect on the better one of two surfaces, the other side has to reach FB requirement at least.