Series Model: YG11 / YG15 Cold Heading Stamping Dies – Screw Series

WC-Co Material Grades: YG11 (Co 11%), YG15 (Co 15%); fine to medium grain; YG11 offers higher hardness for precision applications, YG15 provides superior toughness for high-impact screw heading

Key Dimensions & Tolerances: Fully custom dimensions per screw specifications; tolerance ±0.001–0.005 mm; precision-ground and mirror-polished working surfaces

Physical Properties: YG11: Hardness 88.5 HRA, TRS 2600 MPa, density 14.4 g/cm³; YG15: Hardness 87.5 HRA, TRS 2800 MPa, density 14.0 g/cm³

Surface Roughness & Coatings: Mirror-polished surface (Ra ≤0.05–0.1 μm); polishing extends tool lifespan by 30%–50%; optional TiN, TiCN, CrN, TiAlN coatings for reduced friction and extended die life

Applicable Materials & Service Life: Carbon steel, alloy steel, stainless steel, screws, bolts, nuts; cold heading process achieves 80–90% material utilization with near-zero scrap; YG15 grade specifically recommended for punching, stamping, and forging tools under large stress

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