TiN AL2O3-TIN
Reinforced grade
AL2O3-TIN = al₂O₃–TiN 30 %
Pick when a hard ceramic must also be EDM-wire-cut or wire-eroded — e.g. cutting inserts, punches, wear guides.
Values for the AL2O3-TIN condition
Other TiN tempers and conditions
TiN is listed in 3 conditions; see the grade overview at TiN.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Pressureless-sintered TiN | Lower-cost route for larger or complex bulk shapes where some residual porosity and lower hardness are acceptable. | — | — | — | 1,600 HV | 22 W/m·K |
AL2O3-TINThis page Al₂O₃–TiN 30 % | Pick when a hard ceramic must also be EDM-wire-cut or wire-eroded — e.g. cutting inserts, punches, wear guides. | — | — | — | 1,750 HV | 25 W/m·K |
HPDefault Hot-pressed / SPS dense bulk TiN | Choose for dense bulk parts, electrodes, crucibles and EDM-machinable conductive ceramic bodies. | — | — | — | 1,900 HV | 29 W/m·K |
What is TiN AL2O3-TIN?
TiN AL2O3-TIN is TiN in the AL2O3-TIN grade — pick when a hard ceramic must also be EDM-wire-cut or wire-eroded — e.g. cutting inserts, punches, wear guides. The elastic modulus is 380 GPa (55.1 Msi). TiN AL2O3-TIN has a density of 4.3 g/cm³ (0.155 lb/in³), lighter than 56% of ceramic grades. It melts at 2,950°C (5,342 °F). HP is the default condition FabDigit quotes; AL2O3-TIN is available on request or by drawing note.
Advantages
- Easy to machine — 15/100, better than 81% of ceramic grades
TiN AL2O3-TIN properties
Typical room-temperature values for TiN AL2O3-TIN; 11 are specific to this condition. Other listed values are TiN reference data and may not represent this condition. Bars are the position among ceramic grades.
Physical3
TiN AL2O3-TIN has a density of 4.3 g/cm³ (0.155 lb/in³), lighter than 56% of ceramic grades. It melts at 2,950°C (5,342 °F).
Mechanical9
The elastic modulus is 380 GPa (55.1 Msi).
Thermal5
TiN AL2O3-TIN is rated for continuous service to 800°C (1,472 °F). It conducts heat at 25 W/m·K (14.4 BTU/hr·ft·°F), better than 55% of ceramic grades. Thermal expansion is 8.4 µm/m·K (4.67 µin/in·°F).
Electrical2
TiN AL2O3-TIN has an electrical resistivity of 1×10⁻⁴ Ω·m.
Chemical & Environmental2
Corrosion resistance is very good (75/100), better than 50% of ceramic grades.
Sustainability3
Producing a kilogram of TiN AL2O3-TIN takes about 200 MJ of energy and emits 15 kg of CO₂ — more than 63% of ceramic grades. Typical recycled content is 0%.
Manufacturability3
TiN AL2O3-TIN's machinability is poor (15/100, better than 81% of ceramic grades).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with TiN AL2O3-TIN
Is TiN easy to machine?
Bulk TiN is machined only by diamond grinding, lapping or laser; because it is electrically conductive it can also be wire/sink EDM'd — a key advantage over insulating nitrides.
Can TiN be welded?
Not weldable; joined by active-metal brazing (Ti/Zr-containing filler), diffusion bonding or mechanical clamping.
Can TiN be formed, bent or molded?
Shaped by uniaxial/CIP pressing then hot-pressing or SPS at 1650–2000 °C (pressureless sintering needs Ni/Co aid); coatings are produced by cathodic-arc/sputter PVD at 200–500 °C or CVD at 900–1050 °C in N₂/TiCl₄.
What surface finishes work on TiN?
Substrate must be polished before coating — PVD TiN replicates the surface; gold film can be polished, passivated or over-coated (TiCN/TiAlN) and is stripped chemically in H₂O₂-based baths for recoating.
TiN 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 |
|---|---|---|
| N | 21 – 23 | 22.6 |
| Osurface oxide on powder | ≤ 1 | 0.4 |
| Cfrom carbothermal route | ≤ 0.5 | 0.15 |
| Nionly in liquid-phase (pressureless) sintered grades | ≤ 3 | — |
| Tistoichiometric TiN₁.₀; commercial TiNx ranges x ≈ 0.6–1.1 | ≥ 76 (balance) | — |
TiN AL2O3-TIN — frequently asked
What is TiN AL2O3-TIN used for?
TiN AL2O3-TIN is typically used for cutting tool PVD coatings, wear-resistant coatings, decorative gold-tone finishes, diffusion barrier layers and medical implant coatings. In short: conductive, EDM-able nitride; standard gold tool coating; 600 °C oxidation limit.
Is TiN AL2O3-TIN easy to machine?
Not especially — machinability is rated poor (15/100, better than 81% of ceramic grades). Bulk TiN is machined only by diamond grinding, lapping or laser; because it is electrically conductive it can also be wire/sink EDM'd — a key advantage over insulating nitrides.
Can TiN AL2O3-TIN be welded?
Not weldable; joined by active-metal brazing (Ti/Zr-containing filler), diffusion bonding or mechanical clamping.
What surface finishes work on TiN AL2O3-TIN?
Substrate must be polished before coating — PVD TiN replicates the surface; gold film can be polished, passivated or over-coated (TiCN/TiAlN) and is stripped chemically in H₂O₂-based baths for recoating.
Can TiN AL2O3-TIN be formed, bent or molded?
Shaped by uniaxial/CIP pressing then hot-pressing or SPS at 1650–2000 °C (pressureless sintering needs Ni/Co aid); coatings are produced by cathodic-arc/sputter PVD at 200–500 °C or CVD at 900–1050 °C in N₂/TiCl₄.
What is the maximum service temperature of TiN AL2O3-TIN?
TiN AL2O3-TIN 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
- Handbook of Refractory Carbides and Nitrides — Noyes/William Andrew (H.O. Pierson) (1996)
- ASM Engineered Materials Handbook, Vol. 4: Ceramics and Glasses — ASM International (1991)
- PVD hard coating datasheets (TiN / BALINIT A class) — Oerlikon Balzers / IHI Hauzer (2023)
- Non-oxide ceramic property tables (TiN, TiCN, Al₂O₃–TiN) — CES/MatWeb-type compilations (2024)
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.