Product Description
- Semiconductor manufacturing equipment;
- Electrical power system;
- DC converter;
- Other electronic components.
Selectable Silicon Aluminum(Si/Al) Alloys
- AlSi50(Al-50%Si controlled expansion alloy);
- AlSi70(Si-30%Al controlled expansion alloy).
Advantages
- High thermal conductivity;
- Low density;
- Excellent processability;
- CTE match to circuit board and assembly components.
AlSi Alloys Performance Parameters
Content wt% |
Density g/cm³ |
CTE 25℃ ppm/℃ |
Thermal Conductivity 25℃ W/mK |
Tensile Strength MPa |
Yield Strength
MPa |
Poisson’s Ratio |
Elongation % |
Elastic Modulus GPa |
Al-27%Si |
2.6 |
17 |
175 |
170 |
130 |
0.29 |
3.8 |
91 |
Al-42%Si |
2.55 |
13.5 |
143 |
200 |
187 |
0.29 |
1 |
105 |
Al-50%Si |
2.5 |
11.5 |
140 |
200 |
210 |
0.28 |
<1 |
108 |
Si-40%Al |
2.46 |
9 |
125 |
181 |
181 |
0.27 |
<1 |
121 |
Si-30%Al |
2.43 |
7.5 |
120 |
138 |
138 |
0.25 |
<1 |
131 |
Si-20%Al |
2.40 |
6 |
110 |
125 |
125 |
-- |
-- |
132 |
Content |
Density g/cm³ |
CTE ppm/℃ |
Thermal Conductivity W/mK | Tensile Strength MPa | Yield Strength MPa |
Poisson’s Ratio |
Elongation % |
Elastic Modulus GPa |
BEW 6061 | 2.7 | 22.6 | 210 | 312 | 270 | 0.33 | 12.5 | 69 |
BEW 4047 | 2.66 | 21.6 | 193 | 208 | 129 | 0.33 | 18 | 70 |