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Author: admin / 2025-12-08

The Absolute King of Die Casting: Aluminum Alloy

Content

1 1. The Dominance of Aluminum Alloy
2 2. Two Golden Models
3 3. Dominating Three Major Industries
4 4. Cost Advantage Over Competitors
5 5. Extremely High Tolerance

1. The Dominance of Aluminum Alloy

Overwhelming Usage: At least 8 out of 10 die-cast parts are made of aluminum alloy (Aluminum Die Casting). It's ubiquitous in car parts, mobile phone casings, and home appliance frames.
Balanced Performance with No Weaknesses: Half the weight of steel, ten times stronger than plastic, excellent heat dissipation, conductivity, and corrosion resistance – a true "all-rounder."

2. Two Golden Models

ADC12 (Japanese Ace):
High-silicon formula (≈12% silicon), aluminum liquid flows like water, ideal for ultra-thin parts (such as laptop casings) down to 0.5mm.
Recycled aluminum is directly reused, minimizing costs.
A380 (American Tough Guy):
Heat-resistant and crack-resistant, specifically designed for engine cylinder heads, capable of withstanding 200℃ high-temperature baking.
Higher strength than ADC12, suitable for load-bearing parts.

3. Dominating Three Major Industries

Industry	Signature Part	Aluminum's Edge
Automotive	Electric Motor Housings	▪️ Cooling channels + wire slots cast as one- Zero-leakage for life vs. welded parts
3C Electronics	Smartphone Frames	▪️ 5G antenna slots + metallic finish- Plastic can’t match signal stability/strength
Home Appliances	AC Compressors	▪️ Structural cooling fins cast-in- Eliminates extra cooling fans

4. Cost Advantage Over Competitors

Dirt Cheap Material: Aluminum ingot price is 1/3 that of magnesium alloy, and scrap metal can be recycled without degradation.
More Durable Molds: The same steel mold can be used 100,000 times for aluminum alloy, but only 50,000 times for magnesium alloy before becoming unusable.

5. Extremely High Tolerance

Temperature Flexibility: Aluminum liquid can be successfully die-cast at 660℃ ± 20℃, while magnesium alloy will show defects with a difference of only 5℃.
Easy Defect Remediation: Surface pores can be covered by sandblasting, and internal bubbles can be screened out by X-ray, unlike magnesium alloy which corrodes and spreads.