{"id":5522,"date":"2026-08-12T10:43:44","date_gmt":"2026-08-12T02:43:44","guid":{"rendered":"https:\/\/www.scojetchina.com\/?p=5522"},"modified":"2026-08-12T11:12:42","modified_gmt":"2026-08-12T03:12:42","slug":"aluminum-die-casting-material-guide-common-alloys-properties-and-selection-tips","status":"publish","type":"post","link":"https:\/\/www.scojetchina.com\/es\/aluminum-die-casting-material-guide-common-alloys-properties-and-selection-tips\/","title":{"rendered":"Aluminum\u00a0Die Casting Material Guide: Common Alloys, Properties, and Selection Tips"},"content":{"rendered":"
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Choosing the right aluminum\u00a0die casting material affects part strength, corrosion resistance, machinability, surface finish, pressure tightness, and cost. Pure aluminum is rarely used in die casting. It uses engineered aluminum alloy families designed to flow into a die cavity, solidify quickly, and meet the working requirements of the final component.<\/p>

If you are developing housings, brackets, covers, heat dissipation parts, or automotive components, discuss material selection before tooling starts. Scojet supports custom aluminum alloy die casting, CNC machining, finishing, and inspection, helping customers match the alloy to the part design and application.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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What is Aluminum die casting material?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Aluminum\u00a0die casting material refers to aluminum alloys formulated for the die casting process. These alloys usually include elements such as silicon, copper, magnesium, manganese, or zinc to improve castability, strength, hardness, corrosion resistance, or machining behavior. The right alloy must fill the mold well and still deliver the required mechanical and surface performance after casting.<\/p>

Material choice is closely connected to part design. A thin-wall enclosure, a motor housing, a heat sink, and a load-bearing bracket may all use aluminum die casting, but they may not need the same alloy. A good supplier will review both the drawing and the operating environment before recommending a material.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Key properties to compare before choosing an alloy<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Mechanical strength is usually the first question. The part may need to resist load, vibration, impact, or assembly stress. Corrosion resistance is important for outdoor equipment, marine-related parts, and components exposed to moisture or chemicals. Thermal conductivity matters for heat sinks, lighting housings, motor housings, and electronics enclosures.<\/p>

Machinability also affects cost because many die cast parts still require drilling, tapping, milling, or critical surface machining. Pressure tightness can be important for pump housings, fluid components, or parts that must resist leakage. Surface finishing compatibility should be reviewed if the part will be powder coated, painted, plated, polished, or otherwise finished.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Common aluminum die casting materials<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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A380 is one of the most common aluminum die casting alloys because it offers a practical balance of castability, strength, and cost. It is often used for housings, brackets, automotive parts, and general industrial components. ADC12 is widely used in Asian manufacturing and is valued for good castability and machining performance. It is common in electronic housings, machinery parts, and general custom die cast parts.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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A360 may be selected when better corrosion resistance or pressure tightness is needed. A413 is known for good fluidity and pressure tightness, making it suitable for certain thin-wall or leak-sensitive applications. AlSi9Cu3 and EN AC-46000 are common in European automotive and industrial projects where balanced casting performance and strength are required.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Alloy<\/strong><\/td>Main features<\/strong><\/td>Typical applications<\/strong><\/td>Selection notes<\/strong><\/td><\/tr>
A380<\/td>Balanced strength, castability, and cost<\/td>Automotive parts, housings, brackets<\/td>Common general-purpose die casting choice<\/td><\/tr>
ADC12<\/td>Good castability and machinability<\/td>Electronic housings, covers, machinery parts<\/td>Popular in Asian supply chains<\/td><\/tr>
A360<\/td>Better corrosion resistance than many standard alloys<\/td>Outdoor parts, fluid-related components<\/td>Useful when environment is a concern<\/td><\/tr>
A413<\/td>Good fluidity and pressure tightness<\/td>Thin-wall or leak-sensitive castings<\/td>Consider when sealing performance matters<\/td><\/tr>
AlSi9Cu3 \/ EN AC-46000<\/td>Balanced casting performance and strength<\/td>Automotive and industrial parts<\/td>Often used in European specifications<\/td><\/tr><\/tbody><\/table><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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How to choose material by application<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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For automotive components, the alloy should support strength, heat resistance, dimensional stability, and repeatable machining. Brackets, housings, and structural covers may also need good fatigue behavior and reliable assembly surfaces. For electronic housings, thermal performance, EMI shielding, surface finish, and dimensional control are often more important than maximum strength.<\/p>

Industrial machinery parts may require wear resistance, machining precision, and load-bearing capacity. Outdoor hardware needs corrosion resistance and coating compatibility. If the part will be exposed to weather, humidity, salt spray, or chemicals, the alloy and surface treatment should be selected together rather than separately.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Aluminum vs zinc vs magnesium die casting materials<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Aluminum is light, strong, and cost effective for many structural and industrial parts. It is often the default choice when the project needs a good strength-to-weight ratio and reasonable production cost. Zinc is heavier, but it can provide excellent precision, thin-wall casting, long die life, and a high-quality surface for decorative finishes. Magnesium is lighter than aluminum and is useful for weight-sensitive designs, although it requires experienced processing and careful surface protection in some environments.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Common material selection mistakes<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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