The Role of Alloy Selection in Die-Casting Performance

Choosing the right aluminium or zinc alloy for die-casting isn’t just about price or availability — it’s about balancing mechanical strength, corrosion resistance, machinability, and dimensional stability.

✅ Aluminium Alloys (e.g. ADC12, A380, LM6)Aluminium alloys are widely used for their strength-to-weight ratio, thermal conductivity, and corrosion resistance. For example:

• ADC12 / A380: Good fluidity, low shrinkage — ideal for thin walls and complex shapes.

• LM6: Superior corrosion resistance — often selected for marine or outdoor applications, though slightly softer.

  
  

✅ Zinc Alloys (e.g. Zamak 3, Zamak 5)Zinc alloys offer excellent castability and are great for fine details or thin-walled parts.

• Zamak 3: Preferred for stability and dimensional accuracy.

• Zamak 5: Added copper content gives better strength where that matters.

  
  

🚀 Why alloy choice matters:

A mismatch between alloy and application can lead to:

⚠️ Cracking during machining

⚠️ Poor surface finish or porosity

⚠️ Premature failure under load

⚠️ Corrosion issues in service

💡 LVIO Precision’s approach:

We help customers choose alloys that fit their part’s functional, cosmetic, and cost needs. While we don’t produce the alloy, we manage its selection, sourcing, casting, machining, and finishing — ensuring the material matches your product's lifecycle and environment.