Metal Material
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Die Casting Aluminum alloy A380
A380 die-cast aluminum alloy is the most common special aluminum alloy, because it combines the characteristics of easy casting, easy processing and good thermal conductivity. Variable flow, pressure and high temperature splitting resistance is very strong
describe
Introduce:
One of the common applications of aluminum is die casting, which involves injecting molten metal under high pressure into a mold cavity to form complex shapes with high precision and repeatability.
Advantage:
High extensibility and easy shaping
Good electrical and thermal conductivity
Strong corrosion resistance
high strength to weight ratio
Disadvantages:
susceptible to damage or wear
low melting point
Has a natural oxide layer and is difficult to coat
features
Price:
$ $ $
Wall Thickness
0.75 mm
Tolerances:
±0.125mm (±0.005″)
Wall Thickness:
Minimum 0.80 mm (~0.03”); may vary depending on alloy and wall thickness-to-planar dimension ratios
Max part size:
The maximum size of the part is determined by the available machines and the complexity of the part.
Aluminum alloy properties
Manufacturer：DaZheng in China
| COMPOSITION % | ||||||||||
| Cu | Si | Mg | Zn | Fe | Mn | Ni | Sn | Al | Other-Metallic | RoHS Compliant |
| 3.0-4.0 | 7.5-9.5 | 0.1 | 3 | 1.3 | 0.5 | 0.5 | 0.35 | Bal. | 0.02 | ✓ |
| MECHANICAL PROPERTIES | Metric | |||
| Tensile Strength | Yield Strength (0.2%) | Elongation | Hardness |
| MPa | MPa | % in 50mm | Brinell (HB) |
| 324 | 160 | 2.5 | 80 |
| PHYSICAL PROPERTIES | Metric | |||
| Density | Melting Point (Average +/- 50) | Thermal Conductivity | Coefficient of Thermal Expansion |
| g/cm3 | °C | W / m K | µm/m°K |
| 2.71 | 566 | 96 | 21.8 |
Die Casting Magnesium alloy AZ91D
AZ91D belongs to cast magnesium alloy, which is mainly processed by pressure mold casting assisted by post-processing. The appearance can be changed by surface methods such as electrophoresis. It is characterized by high strength and good corrosion resistance
describe
Introduce:
Magnesium is used to make high quality, intricately shaped parts with excellent surface finishes. The molten metal is injected into steel dies or punches under high pressure in the die casting process because of their low melting point, which makes them easy to melt and cast. Magnesium alloys have good fluidity and can produce complex, thin-walled parts.
Advantage:
Good machinability & heat dissipation
High dimensional stability & high weight ratio
Disadvantages:
Flammability
Easy to corrode
features
Price:
$ $ $ $
Tolerances:
±0.125mm (±0.005″)
Wall Thickness:
Minimum 0.80 mm (~0.03”); may vary depending on alloy and wall thickness-to-planar dimension ratios
Max part size:
The maximum size of the part is determined by the available machines and the complexity of the part.
Magnesium alloy properties
Manufacturer：YUNHAI in China
| COMPOSITION % | ||||||||||
| Cu | Si | Mg | Zn | Fe | Mn | Ni | Sn | Al | Other-Metallic | RoHS Compliant |
| 3.0-4.0 | 7.5-9.5 | 0.1 | 3 | 1.3 | 0.5 | 0.5 | 0.35 | Bal. | 0.02 | ✓ |
| MECHANICAL PROPERTIES | Metric | |||
| Tensile Strength | Yield Strength (0.2%) | Elongation | Hardness |
| MPa | MPa | % in 50mm | Brinell (HB) |
| 324 | 160 | 2.5 | 80 |
| PHYSICAL PROPERTIES | Metric | |||
| Density | Melting Point (Average +/- 50) | Thermal Conductivity | Coefficient of Thermal Expansion |
| g/cm3 | °C | W / m K | µm/m°K |
| 2.71 | 566 | 96 | 21.8 |
Die Casting Zinc alloy#3 #5
The castability and long-lasting dimensional stability of No. 3 zinc alloy make more than 70% of zinc alloy die-casting products use No. 3 zinc alloy. No. 3 zinc alloy electroplating, painting and chrome plating and other surface treatments.
Zinc Alloy No. 5 has higher hardness and strength than Alloy No. 3. The characteristic transformation of zinc alloy No. 5 is due to the addition of 1% copper, and this alloy has excellent castability.
describe
Introduce:
Zinc is a common material used in die casting due to its low melting point and good flowability. It can be easily cast into complex shapes with high dimensional accuracy. Zinc alloys also have excellent corrosion resistance, high strength and good thermal conductivity.
Advantage:
Good surface finish & good flowability
High dimensional accuracy & high weight ratio
Disadvantages:
Limited solderability & brittleness
Low thermal conductivity
features
Price:
$
Tolerances:
±0.125mm (±0.005″)
Wall Thickness:
A minimum wall thickness of 0.03” (0.8mm) is achievable. This can vary depending on the ratios of wall thickness to planar dimension. The specific zinc alloy will also affect the achievable minimum wall thickness.
Max part size:
The maximum size of the part is determined by the available machines and the complexity of the part.
Zinc alloy properties
Manufacturer：DaZheng in China
| COMPOSITION % | |||||||||||
| Model# | Al | Mg | Cu | Ni | Zn | Fe | Pb | Cd | Sn | Cu | RoHS Compliant |
| Zamak#3 | 3.9-4.3 | 0.03-0.06 | Bal. | 0.03 | 0.003 | 0.003 | 0.001 | 0.03 | ✓ | ||
| Zamak#5 | 3.9-4.3 | 0.03-0.06 | 0.75-1.1 | Bal. | 0.03 | 0.003 | 0.003 | 0.001 | ✓ | ||
| MECHANICAL PROPERTIES | Metric | ||||
| Model# | Tensile Strength | Yield Strength (0.2%) | Elongation | Hardness |
| MPa | MPa | % in 50mm | Brinell (HB) | |
| Zamak#3 | 283 | 221 | 10 | 82 |
| Zamak#5 | 328 | 269 | 7 | 91 |
| PHYSICAL PROPERTIES | Metric | ||||
| Model# | Density | Melting temperature | Thermal Conductivity | Coefficient of Thermal Expansion |
| g/cm3 | °C | W / m K | µm/m°K | |
| Zamak#3 | 6.6 | 381-387 | 113 | 27.4 |
| Zamak#5 | 6.7 | 380-386 | 109 | 27.4 |
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FAQ
What metals can be used for die casting?
Die casting commonly involves the use of non-ferrous metals, such as aluminum, zinc, and magnesium. These metals have favorable properties for the die casting process, including excellent castability, lightweight characteristics, and good mechanical properties.
How to choose die casting materials?
The selection of die casting materials depends on various factors, including the desired mechanical properties, dimensional accuracy, surface finish requirements, cost considerations, and the specific application of the part. Consult the GPMFG materials expert to determine the best material for your specific needs.
What materials cannot be die cast?
While many metals can be die cast, certain materials like pure iron, lead, and most steels cannot be easily die cast due to their high melting points, poor fluidity, and other casting limitations.
What is the strongest die casting metal?
Among the commonly used die casting metals, aluminum alloys are known for their high strength-to-weight ratio. Aluminum-based materials, such as A380 and A413, are often used in high-strength applications.
Which aluminum is the most suitable for die casting?
Aluminum alloy A380 is one of the most widely used materials for die casting. It offers good castability, excellent mechanical properties, and high thermal conductivity, making it suitable for various applications in automotive, aerospace, and consumer electronics industries.
Is magnesium alloy brittle or ductile?
Magnesium alloys are generally considered to be more ductile than brittle. They possess good strength-to-weight ratio and exhibit excellent impact resistance. However, the specific properties of a magnesium alloy can vary depending on the alloy composition and heat treatment.
Why use magnesium alloy?
Magnesium alloys are known for their excellent strength-to-weight ratio, high stiffness, good thermal conductivity, and electromagnetic shielding properties. They are also highly recyclable and offer good dimensional stability, making them suitable for lightweight and high-performance applications.
Does magnesium alloy rust?
Unlike iron-based metals, magnesium alloys do not rust. However, they are prone to corrosion, especially in humid or corrosive environments. To protect magnesium parts from corrosion, various surface treatments and coatings are applied, such as anodizing, chromate conversion coating, and painting.
What is the strength of zinc castings?
Zinc castings exhibit good strength properties. The strength of zinc castings primarily depends on the alloy composition, casting design, and heat treatment, if applicable. Zinc alloys are known for their high impact strength and are commonly used in applications where good dimensional stability and moderate strength are required.
Is zinc easy to cast?
Yes, zinc is generally considered to be easy to cast. It has a low melting point, excellent fluidity when molten, and good castability characteristics. These properties make zinc a popular choice for high-volume production, intricate shapes, and thin-walled components.
