Material EN AC-AlSi9 is produced as diecasting. It shows the following casting characteristics and properties: plasticity: excellent heat crack resistance: excellent pressure tightness: acceptable workability (after heat-treatment): acceptable corrosion resistance: acceptable decorative anodic oxidation: not advisable weldability: insufficient polishability: insufficient strength at room temperature: acceptable strength at increased temp. (up to 200°C): acceptable ductility (impact strength): acceptable fatigue strength amounts 60 to 90 N/mm² ( best available casting method, values for vibration durability up to 50*10 hoch 6 cycles [Woehler diagram]). Diecasting weldability depends on the embedded gas amount and is mostly insufficient. For certain casting methods are achievable good to acceptable values.
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2.65 - 2.71 g/cm³ at 20 °C
Typical for Cast 4xx.x Series Aluminium
Coefficient of thermal expansionα
2.1E-5 - 2.2E-5 1/K at 20 °C
550 - 600 °C
Specific heat capacitycp
910 J/(kg·K) at 20 °C
130 - 150 W/(m·K) at 20 °C
1.60E+7 - 2.20E+7 S/m at 20 °C
4.55E-8 - 6.25E-8 Ω·m at 20 °C
each 0.05, total 0.15, Rest Al
8 - 11 %
decorative: not recommended
after thermal treatment: acceptable
pressure die casting, separately cast test sample
This material data has been provided by WIAM,AluKey.