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C:0.08~0.15 Si:0.20~0.60 Mn:1.00~2.50 Mo:0.30~0.70 N:0.03~0.10 Cr:12.00~15.00 Ni:1.00~2.00 Others:0.10~0.50 Hardness: 40~45HRC Application: Continuous caster roller etc. Welding flux: SJ203