· KAIPU Engineering · materials-encyclopedia · 1 min read
GB YG15 Tungsten Carbide (K30–K40)
Materials encyclopedia entry for YG15.
GB YG15 Tungsten Carbide (K30–K40) is a reference entry for industrial cutting tools and blades. The composition, hardness, heat treatment and application guidance are summarised below for engineering reference.
Standard composition: WC 85 %, Co 15 %, no grain-growth inhibitors, WC grain 1.5–2.5 µm
Hardness: HRA 87.5–89.0 (≈ HRC 74–76)
Heat treatment: Sintered at 1,360–1,440 °C, no further heat treatment
Properties: High-Co carbide for the toughest impact applications. Lower wear life than YG6X but survives blows that would shatter finer grades.
Applications: Recycling rotors, automotive shredder residue (ASR) granulators, primary shredders, hammer-mill inserts.
Cross-reference: ≈ ISO K30–K40.
See also: D2 vs SKD11 comparison, Material Grade Converter, The KAIPU 5-Factor Blade Selection Framework.