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High Strength for Structural Die Casting
ADC10 is a high-performance aluminum die casting alloy designed for applications demanding superior mechanical strength alongside reliable corrosion resistance. Its lower silicon and higher copper content compared to ADC12 results in a stiffer, stronger alloy suited to load-bearing structural parts.
Widely specified in automotive structural and powertrain components where dimensional accuracy and strength under stress are critical requirements.
| Element | Range | Typical | Role |
|---|---|---|---|
| Silicon (Si) | 7.5 – 9.5% | 8.5% | Fluidity and wear resistance |
| Copper (Cu) | 2.0 – 4.0% | 3.0% | Primary strength contributor |
| Iron (Fe) | ≤ 0.9% | 0.9% | Prevents die soldering |
| Manganese (Mn) | ≤ 0.5% | 0.25% | Hot strength and grain refinement |
| Zinc (Zn) | ≤ 1.0% | 0.5% | Minor strengthening |
| Magnesium (Mg) | ≤ 0.3% | 0.1% | Controlled for ductility balance |
| Aluminum (Al) | Balance | ~86% | Base metal |
The Industry Standard for High-Pressure Die Casting
ADC12 is the most widely used aluminum die casting alloy globally, and for good reason — it delivers an outstanding combination of fluidity, castability, and mechanical strength that makes it ideal for complex, thin-wall components at high production volumes.
Its high silicon content gives excellent flow characteristics in the die, reducing cold shuts and misruns, while the copper content improves machinability and tensile strength after casting.
| Element | Range | Typical | Role |
|---|---|---|---|
| Silicon (Si) | 9.6 – 12.0% | 10.5% | Improves fluidity and castability |
| Copper (Cu) | 1.5 – 3.5% | 2.0% | Increases strength and hardness |
| Iron (Fe) | ≤ 0.9% | 0.9% | Prevents die soldering |
| Manganese (Mn) | ≤ 0.5% | 0.3% | Improves hot strength |
| Zinc (Zn) | ≤ 1.0% | 0.5% | Minor strengthening effect |
| Magnesium (Mg) | ≤ 0.3% | 0.15% | Controlled for ductility |
| Cadmium (Cd) | ≤ 0.009% | 0.15% | Improves machinability |
| Aluminum (Al) | Balance | ~85% | Base metal |
Maximum Corrosion Resistance for Marine & Outdoor Use
LM6 is a high-purity aluminum-silicon alloy engineered for applications where corrosion resistance is the primary requirement. Its very high silicon content and near-zero copper content make it one of the most corrosion-resistant casting alloys available, performing reliably in marine, coastal, and chemically aggressive environments.
Its excellent castability and low shrinkage make it well-suited for sand casting and gravity die casting of large or complex shapes where surface integrity is important.
| Element | Range | Typical | Role |
|---|---|---|---|
| Silicon (Si) | 10.0 – 13.0% | 11.5% | Fluidity, wear & corrosion resistance |
| Copper (Cu) | ≤ 0.1% | 0.05% | Minimized — key to corrosion resistance |
| Iron (Fe) | ≤ 0.6% | 0.4% | Kept low for ductility |
| Manganese (Mn) | ≤ 0.5% | 0.2% | Minor strengthening |
| Magnesium (Mg) | ≤ 0.1% | 0.05% | Minimized for corrosion performance |
| Zinc (Zn) | ≤ 0.1% | 0.05% | Tightly controlled impurity |
| Aluminum (Al) | Balance | ~88% | Base metal |
High-Silicon Alloy for Wear Resistance & Complex Castings
LM9 is a high-silicon aluminium casting alloy conforming to British Standard BS 1490 LM9. Its elevated silicon content provides excellent fluidity, good wear resistance, and reliable casting performance for intricate and thin-walled components.
The alloy is widely used where dimensional stability, casting integrity, and resistance to abrasion are important. LM9 is particularly suitable for gravity die casting applications requiring complex geometries and consistent production quality.
| Silicon (Si) | 10.0 – 13.0 |
| Magnesium (Mg) | 0.2 – 0.6 |
| Manganese (Mn) | 0.3 – 0.7 |
| Iron (Fe) | 0.6 Max. |
| Copper (Cu) | 0.1 Max. |
| Nickel (Ni) | 0.1 Max. |
| Zinc (Zn) | 0.1 Max. |
| Lead (Pb) | 0.1 Max. |
| Tin (Sn) | 0.05 Max. |
| Titanium (Ti) | 0.2 Max. |
| Aluminium (Al) | Remainder |
General Purpose Pressure Die Casting Alloy
LM24 is a versatile, general-purpose aluminum alloy formulated specifically for pressure die casting. It delivers a reliable balance of mechanical properties, good machinability, and consistent casting behavior — making it a practical choice when ADC12 or LM25 may be over-specified for the application.
Its higher copper content versus LM25 gives it better strength in the as-cast condition, while its silicon level ensures adequate mold-filling for mid-complexity parts.
| Element | Range | Typical | Role |
|---|---|---|---|
| Silicon (Si) | 7.5 – 9.5% | 8.5% | Castability and fluidity |
| Copper (Cu) | 3.0 – 4.0% | 3.5% | Strength in as-cast condition |
| Iron (Fe) | ≤ 1.3% | 0.9% | Die soldering prevention |
| Manganese (Mn) | ≤ 0.5% | 0.3% | Elevated-temperature strength |
| Zinc (Zn) | ≤ 3.0% | 0.6% | Minor strengthening |
| Magnesium (Mg) | ≤ 0.3% | 0.1% | Controlled for ductility |
| Aluminum (Al) | Balance | ~86% | Base metal |
Heat-Treatable Alloy for Precision & Aerospace
LM25 is a premium heat-treatable aluminum-silicon-magnesium alloy that offers an exceptional strength-to-weight ratio after T6 heat treatment. Its very low copper content gives it superior corrosion resistance, making it the preferred choice for aerospace, defence, and precision engineering applications.
Unlike ADC grades, LM25 is optimized for gravity die casting (GDC) and low-pressure die casting (LPDC), where slower fill rates allow its excellent pressure-tightness and surface finish characteristics to shine.
| Element | Range | Typical | Role |
|---|---|---|---|
| Silicon (Si) | 6.5 – 7.5% | 7.0% | Castability and fluidity |
| Magnesium (Mg) | 0.20 – 0.60% | 0.35% | Age-hardening response (with Si) |
| Iron (Fe) | ≤ 0.5% | 0.3% | Minimized for better ductility |
| Copper (Cu) | ≤ 0.2% | 0.05% | Kept minimal for corrosion resistance |
| Manganese (Mn) | ≤ 0.3% | 0.1% | Grain refinement |
| Titanium (Ti) | ≤ 0.2% | 0.1% | Grain refiner addition |
| Aluminum (Al) | Balance | ~92% | Base metal |
European Standard Equivalent to ADC12
AC46000 is the EN 1706 European standard designation for the alloy broadly equivalent to ADC12, formulated specifically for the European automotive and engineering supply chain. It delivers the same excellent fluidity, castability, and HPDC performance as ADC12 while meeting EU RoHS compliance requirements and European OEM material specifications.
Manufacturers supplying European automotive tiers or exporting to EU markets frequently specify AC46000 over ADC12 to ensure full standards compliance and traceability.
| Element | Range | Typical | Role |
|---|---|---|---|
| Silicon (Si) | 9.6 – 12.0% | 10.5% | Fluidity and castability |
| Copper (Cu) | 1.5 – 3.5% | 2.0% | Strength and hardness |
| Iron (Fe) | ≤ 1.3% | 0.9% | Die soldering resistance |
| Manganese (Mn) | ≤ 0.55% | 0.3% | Hot strength |
| Zinc (Zn) | ≤ 1.2% | 0.5% | Minor strengthening |
| Magnesium (Mg) | ≤ 0.35% | 0.15% | Ductility balance |
| Aluminum (Al) | Balance | ~85% | Base metal |
RP Die Casting is committed to environmental sustainability through our comprehensive aluminum scrap processing services. We transform various grades of aluminum scrap into high-quality recycled materials, supporting the circular economy while maintaining exceptional standards.
Our advanced sorting and processing facilities handle everything from clean turnings to mixed alloy scrap — converting waste materials into valuable resources for manufacturing industries.