C6 YT14
Grade
GB YT14 · ISO P30
YT14 = gB/T 18376.1 WC-14TiC-8Co steel-cutting grade
Chinese-market equivalent for semi-rough turning and milling of steel; higher TiC gives crater resistance but slightly lower toughness.
Values for the YT14 condition
Other C6 tempers and conditions
C6 is listed in 2 conditions; see the grade overview at C6.
- YT14
- TAC
Compare all 2 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
YT14This page GB/T 18376.1 WC-14TiC-8Co steel-cutting grade | Chinese-market equivalent for semi-rough turning and milling of steel; higher TiC gives crater resistance but slightly lower toughness. | — | 750 | 0.1 | 1,420 HV | 26 W/m·K |
TaC-enriched C6 | Pick for milling and interrupted cuts on steel where comb cracking and edge chipping limit tool life. | — | 850 | 0.1 | 1,480 HV | 32 W/m·K |
What is C6 YT14?
C6 YT14 is C6 in the YT14 grade — chinese-market equivalent for semi-rough turning and milling of steel; higher TiC gives crater resistance but slightly lower toughness. The elastic modulus is 520 GPa (75.4 Msi). C6 YT14 has a density of 11.4 g/cm³ (0.412 lb/in³), heavier than 81% of ceramic grades. It melts at 1,320°C (2,408 °F).
Advantages
- Tough — resists crack growth — 9.5 MPa·√m (8.65 ksi·√in), better than 84% of ceramic grades
- Stiff — 520 GPa (75.4 Msi), better than 81% of ceramic grades
Limitations
- High embodied carbon — 30 kg CO₂/kg, worse than 91% of ceramic grades
- Heavy — 11.4 g/cm³ (0.412 lb/in³), worse than 81% of ceramic grades
- Needs corrosion protection — 52/100, worse than 81% of ceramic grades
C6 YT14 properties
Typical room-temperature values for C6 YT14; 14 are specific to this condition. Other listed values are C6 reference data and may not represent this condition. Bars are the position among ceramic grades.
Physical3
C6 YT14 has a density of 11.4 g/cm³ (0.412 lb/in³), heavier than 81% of ceramic grades. It melts at 1,320°C (2,408 °F).
Mechanical10
The elastic modulus is 520 GPa (75.4 Msi).
Thermal5
C6 YT14 is rated for continuous service to 800°C (1,472 °F). It conducts heat at 26 W/m·K (15 BTU/hr·ft·°F), better than 56% of ceramic grades. Thermal expansion is 6.5 µm/m·K (3.61 µin/in·°F).
Electrical1
C6 YT14 has an electrical resistivity of 7×10⁻⁷ Ω·m.
Chemical & Environmental2
Corrosion resistance is fair (52/100), worse than 81% of ceramic grades.
Sustainability3
Producing a kilogram of C6 YT14 takes about 300 MJ of energy and emits 30 kg of CO₂ — more than 74% of ceramic grades. Typical recycled content is 30%.
Manufacturability3
C6 YT14's machinability is not recommended (4/100, worse than 85% of ceramic grades).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with C6 YT14
Is C6 easy to machine?
Green-state pressed or ground; sintered parts can only be diamond-ground, lapped, EDM'd or laser-cut — no conventional cutting.
Can C6 be welded?
Not fusion weldable; joined by silver/copper brazing at 700–900 °C with a ductile interlayer to limit thermal-expansion cracking.
Can C6 be formed, bent or molded?
Formed by uniaxial pressing, extrusion or injection moulding of WC-TiC-Co powder followed by vacuum or sinter-HIP densification at ~1400–1450 °C.
What surface finishes work on C6?
Diamond-wheel grinding then edge honing/blasting; PVD or CVD hard coatings applied for wear resistance; no plating or anodizing.
C6 chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| Cobinder | 6 – 10 | 8 |
| TiCcubic carbide for crater resistance; 14 % in YT14 | 6 – 15 | 10 |
| TaC+NbCoptional, grain control and thermal-shock resistance | 0 – 6 | 3 |
| WCbalance, grain size typically 1–3 µm | balance | — |
C6 YT14 — frequently asked
What is C6 YT14 used for?
C6 YT14 is typically used for general steel turning inserts, steel milling inserts, semi-finishing turning tools, brazed tool tips for steel, boring bar tips and threading and grooving inserts. In short: all-round steel-cutting carbide; more wear-resistant than C5; taC-modified versions available.
Is C6 YT14 easy to machine?
Not especially — machinability is rated not recommended (4/100, worse than 85% of ceramic grades). Green-state pressed or ground; sintered parts can only be diamond-ground, lapped, EDM'd or laser-cut — no conventional cutting.
Can C6 YT14 be welded?
Not fusion weldable; joined by silver/copper brazing at 700–900 °C with a ductile interlayer to limit thermal-expansion cracking.
What surface finishes work on C6 YT14?
Diamond-wheel grinding then edge honing/blasting; PVD or CVD hard coatings applied for wear resistance; no plating or anodizing.
Can C6 YT14 be formed, bent or molded?
Formed by uniaxial pressing, extrusion or injection moulding of WC-TiC-Co powder followed by vacuum or sinter-HIP densification at ~1400–1450 °C.
What is the maximum service temperature of C6 YT14?
C6 YT14 is rated for continuous use to about 800°C (1,472 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Sources
- ISO 513 — Classification and application of hard cutting materials — ISO (2012)
- ISO 3327 — Hardmetals: Determination of transverse rupture strength — ISO (2009)
- ASM Handbook Vol. 2 — Properties of Cemented Carbides — ASM International (1990)
- ASM Handbook Vol. 16 — Machining (Cutting Tool Materials) — ASM International (1989)
- Cemented carbide grade datasheets (P-class steel grades) — Zhuzhou Cemented Carbide / Kennametal / Sandvik Coromant (2023)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.