Cemented Carbide WC-TiC-TaC-Co M20
ISO M20 multi-purpose cemented carbide with WC + TiC + TaC + Co. Bridges the gap between K (cast iron) and P (steel) grades. Moderate crater wear resistance from TiC/TaC with better toughness than pure P-grades. Hardness 90–91 HRA, density ~13.0–14.0 g/cm³, TRS 2000–2400 MPa. Applications: stainless steel (austenitic), heat-resistant alloys, ductile cast iron, mixed production. ANSI C7, China YW2.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| ISO | INT | M20 | — | % | |
| 🇺🇸 | ANSI | USA | C7 | — | % |
| 🇨🇳 | China/GB | China | YW2 | — | % |
Sources: ISO 513, ANSI B212.12, GB/T 2075
Mechanical properties
Compatibility verdict
Cemented Carbide WC-TiC-TaC-Co M20 and M20: null% composition match
Related materials
Cemented Carbide WC-Co K10
ISO K10 cemented tungsten carbide with ~6% cobalt binder. The hardest standard WC-Co grade (92–93 HRA, ~1600 HV) with highest wear resistance but lowest toughness. Density ~14.9 g/cm³, TRS 1800–2200 MPa, elastic modulus ~620 GPa. Fine to submicron grain. Applications: finish turning and boring of cast iron, non-ferrous metals, hardened steel; PCB drilling; wire drawing dies; seal rings; wear parts with no impact. ANSI C2/C3, China YG6.
Cemented Carbide WC-Co K20
ISO K20 cemented tungsten carbide with ~8% cobalt binder. The most widely used general-purpose WC-Co grade, balancing wear resistance and toughness. Hardness 91–92 HRA (~1450–1550 HV), density ~14.7 g/cm³, TRS 2200–2600 MPa. Medium grain. Applications: general turning, milling, drilling of cast iron, non-ferrous metals; end mills; wear parts with light impact; mining bits. ANSI C2, China YG8.
Cemented Carbide WC-Co K40
ISO K40 cemented tungsten carbide with ~15% cobalt binder. Toughest standard WC-Co grade with highest impact resistance but lowest hardness. Hardness 89–90 HRA (~1200–1350 HV), density ~14.0 g/cm³, TRS 2800–3400 MPa. Coarse grain. Applications: heavy roughing of cast iron; cold heading dies; mining and rock drilling; punches and stamping tools; percussion bits; parts subject to heavy impact. ANSI C1/C11, China YG15.
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