As a machinable aluminum nitride ceramic, Shapal Hi-M Soft™ can be machined using conventional metalworking tools, similar to Macor. This allows complex shapes and tight tolerances to be achieved without the need for diamond grinding.
Leveraging our years of manufacturing experience, we can tailor solutions to your prototype design and manufacturing needs, ensuring stability and reliability in specific application scenarios.

Shapal Hi‑M Soft, developed by Tokuyama Corporation, is a machinable aluminum nitride ceramic with excellent thermal conductivity and electrical insulation. The key material properties are shown in the table below.
| Material Properties | Unit | Shapal |
|---|---|---|
| Density | g/cm³ | 2.9 |
| Vickers hardness | HV | 250 |
| Bending strength | MPa | 350 |
| Compressive strength | MPa | 2500 |
| Toughness | MPa·m¹⁄² | 2.4 |
| Elastic modulus | GPa | 290 |
| Poisson’s ratio | — | 0.31 |
| Young’s modulus | GPa | 176 |
| Thermal Properties | Unit | Shapal |
|---|---|---|
| Thermal Conductivity @ -100°C | W/(m·K) | 100 |
| Thermal Conductivity @ 25°C | W/(m·K) | 92 |
| Thermal Conductivity @ 500°C | W/(m·K) | 55 |
| Thermal Conductivity @ 1000°C | W/(m·K) | 35 |
| Thermal Shock Resistance ΔT | °C | 400 |
| CTE¹ 25 °C — 400 °C | 10⁻⁶/K | 4.8 |
| CTE¹ 25 °C — 600 °C | 10⁻⁶/K | 4.9 |
| Maximum Temperature (Inert)² | °C | 1900 |
| Electrical Properties | Unit | Shapal |
|---|---|---|
| Dielectric constant | 1 MHz | 8.6 |
| Breakdown strength | kV/mm | 14 |
| Dielectric loss | 1 MHz | 0.001 |
| Volume resistivity @ 25 °C | Ω·cm | 10 × 10¹⁵ |
| Volume resistivity @ 500 °C | Ω·cm | 3.2 × 10¹³ |
| Volume resistivity @ 1000 °C | Ω·cm | 4.6 × 10⁵ |

Tokuyama Corporation is the original manufacturer of Shapal Hi-M Soft. It is an aluminum nitride-based machinable ceramic known for combining high thermal conductivity with excellent machinability.
Shapal Hi-M Soft is better suited for prototypes requiring high thermal conductivity and efficient heat dissipation, making it ideal for semiconductor, laser, and high-power applications.Macor is more versatile for general prototyping, especially when electrical insulation, tight tolerances, and superior surface finish are required.Macor is typically more cost-effective than Shapal Hi-M Soft, both in raw material price and overall machining cost. Shapal, being aluminum nitride-based, is significantly more expensive but delivers superior thermal performance.
Yes. Jundro offers precision machining services for Shapal Hi-M Soft components, including complex geometries and tight tolerances.
Jundro is a precision ceramics machining manufacturer specializing in fast delivery, high-precision custom parts. We provide our R&D team and engineers with the following support: rapid prototyping, short lead times, extensive expertise in machinable ceramics and hard, brittle materials, and ISO-certified processes to ensure consistently superior quality.
Macor is a machinable glass-ceramic made from fluorophlogopite mica crystals embedded in a borosilicate glass matrix. This composition gives it a rare
combination of metal-like machinability, excellent electrical insulation, low thermal conductivity, and stability up to 1000°C (no load) while maintaining very tight tolerances.
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