SHAPAL™ Hi M-soft
Machinable aluminum nitride ceramics
Special Properties
- Excellent machinability
- High strength
- Suitable for vacuum environments
- Good heat dissipation
- Approx. five times higher thermal conductivity than aluminum oxide ceramic
- Outstanding electrical insulation
- Low coefficient of expansion
- Remarkable high-frequency properties
- Operating temperature up to 1000 °C
(up to 1900 °C in a non-oxidizing atmosphere)
Typical Applications
- Vacuum applications
- Specialty ceramic heat sinks for electronics
- High precision workpieces
- Small series and prototypes
- Components made of low expansion ceramics
Related ceramics products
SHAPAL™ Hi M-soft ceramic offers the properties of ceramics without their typical disadvantages
Ceramic materials have unique properties that metals or other materials cannot offer. But as a rule, the processing of ceramics involves a great deal of effort because such materials usually are hard and brittle. The SHAPAL Hi M-soft aluminum nitride ceramic overcomes this disadvantage because it is machinable while still offering excellent strength. SHAPAL Hi M-soft ceramic contains particles of crystals with lamellar shapes that prevent cracks on the surface when cutting deep into the material.
SHAPAL Hi M-soft material also has impressive electrical specifications. It provides a very high insulation resistance and excellent high-frequency properties like a low dielectric loss factor and a small dielectric constant. Hence, electrical insulators are often made of SHAPAL ceramic. SHAPAL offers superior heat dissipation, which allows using aluminum nitride ceramics for heat sink applications.
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SHAPAL™ Hi M-soft is a registered trademark of Tokuyama, Japan.
Specifications & Properties
Density
Coefficient of Thermal Expansion
- 4,8 × 10-6 / °C (RT-400 °C)
- 4,9 × 10-6 / °C (RT-600 °C)
- 5,0 × 10-6 / °C (RT-800 °C)
Thermal Conductivity
- 100 W/mK (-100 °C)
- 92 W/mK (25 °C)
- 55 W/mK (500 °C)
- 35 W/mK (1000 °C)
Operating Temperature
- up to 1000 °C (in air)
- up to 1900 °C (in a non-oxidizing atmosphere)
Thermal shock resistance
- up to 400 °C (when quenched with water)
Mechanical Characteristics
- Porosity: 0% (25 °C)
- Young's Modulus (25 °C): 176 GPa
- Poisson's Ratio: 0,31
- Vickers Hardness (25 °C ; 300g): 380 kg/mm2
- Bending strength:
- 340 MPa (-100 °C)
- 300 MPa (25 °C)
- 325 MPa (500 °C)
- 350 MPa (1000 °C)
- Compressive Strength: 980 MPa
Electrical Characteristics
- Dielectric Constant (25 °C ; 1 MHz): 6,8
- Dissipation Loss (25 °C ; 1 MHz): 0,001
- Dielectric Strength (25 °C): 65 KV / mm
- Volume Resistivity:
- 1,0 × 1015 Ω x cm (25 °C)
- 3,2 × 1010 Ω x cm (500 °C)
- 4,6 × 105 Ω x cm (1000 °C)
Chemical Durability of SHAPAL Hi M-soft ceramic
(Typical values, no guarantee) |
Medium |
Time
|
Temp.
(°C)
|
Weight loss
(mg/cm2)
|
10 % HCL |
24 h |
20 °C |
ca. 0,2 |
10 % NaOH |
2 h |
20 °C |
ca. 1,7 |
All given details and specifications given here are mean reference values and are not guaranteed. Also, please consider our "
Notes on specifications".
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