Shenzhen Alu Rapid Prototype Precision Co., Ltd.

The strength of die-cast aluminum depends on the specific alloy used, the die-casting process, and post-processing treatments. Below is a concise overview:

A.Key Factors Affecting Strength

1.Alloy Type: Common die-cast aluminum alloys include A380, A383, A360, and 413. Each has distinct mechanical properties:A380 (most common): Offers a good balance of strength, corrosion resistance, and castability.

A360: Higher corrosion resistance but slightly lower strength.

413: High strength and hardness, ideal for thin-walled parts.

2.Process: High-pressure die casting produces dense parts with fine microstructures, enhancing strength compared to other casting methods.

3.Heat Treatment: Post-casting treatments like T6 (solution heat treatment and aging) can significantly increase strength.

B.Typical Mechanical Properties

For A380, a widely used die-cast aluminum alloy, typical properties are:

Tensile Strength: 320–350 MPa (46–51 ksi)

Yield Strength: 160–180 MPa (23–26 ksi)

Elongation: 2–4% (indicating moderate ductility)

Hardness: ~80–100 Brinell (HB)

Density: ~2.7 g/cm³, making it lightweight yet strong.

Other alloys, like 413, can achieve tensile strengths up to 400 MPa with proper treatment, while A360 may be slightly lower (300 MPa).

C.Comparison

1.Vs. Steel: Die-cast aluminum is less strong (steel’s tensile strength can exceed 1000 MPa) but offers a better strength-to-weight ratio.

2.Vs. Wrought Aluminum: Die-cast aluminum is generally less strong than wrought (e.g., 6061-T6, ~310 MPa yield) due to potential casting defects like porosity, but it excels in complex shapes.

3.Vs. Other Cast Metals: Stronger than zinc die-cast alloys (~200–300 MPa) but weaker than some cast magnesium alloys in specific applications.