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sus440c Heat-Treated Buffing Bar

﹒surface roughness : ≤0.25~0.35 RA
﹒D Tolerance : g6 (g5)
﹒Straightness : ≤ 0.2mm/1m
﹒Martensitic steel
﹒High-frequency Quenching
﹒Hardness : HRC 55~58
﹒Hardening Layer : 0.8mm~3mm or more