Product Application
- Radar circuit housings for radar communications
Selectable Silicon Aluminum(Si/Al) Alloys
- AlSi40(Al-40%Si controlled expansion alloy)
Alternative Material
- Iron;
- Copper-molybdenum(Cu-Mo);
Ferritic stainless steel.
Main Characteristics:
Advanced CTE(i.e AlSi50 housing,AlSi60 carrier)match to circuitry in radar communications;
High thermal conductivity;
Ease of machining and plating(laser welded with Ni/Au);
Good hermetically;
Dimensional stability;
- Dispensed with Cu-Mo heat sinks required in radar communications.
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 Density g/cm³ CTE ppm/℃ Poisson’s Ratio Elongation % Elastic Modulus GPa Content Thermal Conductivity W/mK Tensile Strength MPa Yield Strength MPa 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