Material EN AC-AlSi12(Fe) 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: good 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. To the comparable DIN-mark GD-AlSi12, mat. No. 3.2582, acc. to DIN 1725-2 : 1986-02 applies: The material an unhardenable eutectic alloy of excellent form matching capability, high heat-crack resistance, favorable casting properties and high chemical resistance. It is suitable for higher loaded corrosion and vibration resistant casting parts. Application: machine parts, shock and vibration loaded parts, cylinder heads and blocks, engine-, crank- and pump cases, blade wheels, finned bodies, thinn-walled cases, complex assembly blocks and plates.
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2.65 g/cm³ at 20 °C
Coefficient of thermal expansionα
2E-5 - 2.1E-5 1/K at 20 °C
570 - 580 °C
Specific heat capacitycp
900 J/(kg·K) at 20 °C
130 - 160 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 0.25, Rest Al
10.5 - 13.5 %
decorative: not recommended
after thermal treatment: acceptable
pressure die casting, separately cast test sample
This material data has been provided by WIAM,AluKey.