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Price And Market Trend
Sep. 28, 2026
Cermet (metal-ceramic composite) combines a ceramic's hardness and heat resistance with a metal's toughness and machinability. It is widely used in cermet tools, wear parts and electronic packaging. This guide reviews the six properties that matter most when selecting cermet material, structured as property → engineering advantage → selection value, and explains how to verify quality before you buy.
Cermet · Six Core Properties
Hard like ceramic, tough like metal. This combination lets cermet outperform traditional materials in demanding operations.
Values below are typical ranges for common grades; actual figures vary by formulation and process. Confirm against the supplier's test report before specifying.
1. High Hardness & Wear Resistance
Property: hardness typically HRA 85–93 (≈ HRC 65–70+), second only to diamond and cubic boron nitride (CBN).
Engineering advantage: noticeably better wear resistance than high-speed steel and standard cemented carbide; tool life extends significantly, depending on the operation.
Selection value: match the hardness grade to finishing, semi-finishing or heavy cutting.
2. Excellent High-Temperature Resistance
Property: strong red hardness — retains high hardness and strength at 1000°C and above (grade-dependent).
Engineering advantage: suits high-speed cutting and dry machining; ordinary tools soften quickly at high temperature while cermet stays stable.
Selection value: high-temperature grades serve aerospace and automotive component machining.
3. Good Chemical Stability
Property: strong oxidation and corrosion resistance, low affinity with steel and aluminum.
Engineering advantage: less built-up edge, cleaner machined surface; ideal for sticky materials such as stainless steel and titanium alloys.
Selection value: raises machining efficiency on difficult-to-cut materials.
4. Low Friction Coefficient
Property: smooth surface; friction lower than standard cemented carbide.
Engineering advantage: less cutting heat, protecting the tool and workpiece and reducing coolant use.
Selection value: aligns with green manufacturing and cost control.
5. High Compressive Strength
Property: bending strength somewhat lower than metals, but excellent compressive strength.
Engineering advantage: suitable for dies, nozzles and bearings operating under high pressure.
Selection value: choose grade and geometry according to the loading mode of the part.
6. Good Thermal & Electrical Conductivity
Property: better thermal conductivity than pure ceramics, with some electrical conductivity.
Engineering advantage: suited to electronic packaging, high-power chip heat dissipation and wear-resistant electrodes.
Selection value: electronic grades feature high purity and low impurities for demanding packaging requirements.
Qualitative comparison for guidance only — verify performance with actual grade data before specifying.
| Property | Metal (e.g., steel) | Ceramic (e.g., alumina) | Cermet |
|---|---|---|---|
| Hardness | Low | Extremely high | High |
| Toughness | Extremely high | Low (brittle) | Medium-high (chip-resistant) |
| Wear resistance | Poor | Excellent | Excellent |
| Heat resistance | Poor | Excellent | Excellent |
| Surface finish | Fair | Good | Excellent (mirror-like) |
Cutting tools: turning and milling, especially stainless steel and titanium alloys.
Wear parts: dies, nozzles and bearings under high pressure and heavy wear.
Electronics packaging & heat dissipation: high-power chip substrates and wear-resistant electrodes.
High-temperature operations: high-speed and dry cutting.
Request measured hardness and wear-resistance data and compare it against the target grade.
Confirm whether third-party inspection is supported and whether reports are traceable.
Check formulation and batch consistency to avoid lot-to-lot variation.
Confirm customization options: hardness grade, shape and dimensions per your drawing.
Common cermets use Ti(C,N)-based hard phases with a metal binder; they offer better hot hardness and chemical stability with less built-up edge. Cemented carbides (WC-Co) are tougher and suit heavy interrupted cutting. The choice depends on the operation.
Typical grades reach HRA 85–93 (≈ HRC 65–70+), second only to diamond and cubic boron nitride (CBN); exact values vary by formulation.
Stainless steel, titanium alloys and other sticky, difficult-to-cut materials; also cast iron and hardened steel finishing. Heavy roughing usually still favors cemented carbide.
Common grades retain high hardness and strength at 1000°C and above, supporting high-speed and dry cutting.
Machining (cutting tools), dies and wear parts, electronics packaging and heat dissipation, and aerospace and automotive component machining.
Yes. Grades can be formulated for finishing, semi-finishing or heavy cutting, and shape and dimensions can follow your drawing.
Selecting the right cermet grade comes down to matching hardness, toughness and thermal load to your specific operation — and verifying the numbers against test reports rather than marketing claims.
Disclaimer: this article is general material guidance, not an engineering specification. Property values are typical ranges for common grades; verify against the supplier's test certificate and the relevant standard for your application.
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