Die-casting Intros

DIE CASTING ALUMINUM CHARACTERISTICS

►The Introduction of Commonly Used Mechanical Properties

 

♦1. Tensile strength ( ultimate )

The maximum stress achieved when pulling a test specimen in the direction of its

 length, usually expressed as pounds per square inch.

♦2. Yield strength

The level of strength at which elastic strain becomes plastic strain, the stress at which

permanent deformation takes place.

♦3. Elongation

Amount of permanent extension in the vicinity of the fracture in the tension test.

♦4. Modulus of elasticity ( MOE )

Slope of the elastic portion of the stress-strain curve in mechanical testing

 


►Elemental Specifications For Typical Aluminum Die Casting Alloys

 


►The Characteristics of Aluminum Alloys

 


►Product Applications

 

♦1. A380 aluminum alloy is most commonly used because it offers the best combination

of casting and product properties. It is used for widest variety of products; lawn mower

housing, electronics chassis, engine components, home applicance, hand and power tools.

♦2. A383 is alternative to A380 that is specified when very intricate components require

improved die filling characteristics and improved resistance to hot cracking.

♦3. A360 alloy offers improved corrosion resistance and superior strength at elevated

temperatures.

♦4. A443 alloy offers the greatest ductility of aluminum die casting alloys.

♦5. A518 alloy has very good corrosion resistance and ductility. It is used in marinie and

 aircraft hardware and also in escalators.