General Information
LM4 aluminum casting alloy stands out as a versatile choice for a myriad of general engineering applications. It has strong versatility in its ability to form both thick and thin casting sections, with added benefits of pressure tightness. Through heat treatment, LM4 exhibits remarkable static loading capabilities, ensuring reliability under demanding conditions. This alloy finds its place in both sand and die casting processes, offering flexibility across manufacturing methods.
Furthermore, LM4 castings boast commendable machinability, striking a balance between the more challenging aluminum-silicon alloys and the easily machinable aluminum-copper group. Heat treatment further enhances this aspect, making LM4 an ideal choice for applications where precision machining is paramount. Unlock the full potential of LM4 aluminum casting alloy for your engineering needs, ensuring both performance and efficiency.
Typical Applications
LM4 castings, renowned for their versatility and durability, find widespread applications across various industries. Commonly utilized in automotive engineering, LM4 castings are employed in engine components such as cylinder heads, pistons, and engine blocks due to their lightweight nature and excellent thermal conductivity. In the aerospace sector, they are preferred for manufacturing aircraft components like engine mounts and structural parts owing to their high strength-to-weight ratio. Additionally, LM4 castings are used in marine applications for propellers and marine engine parts due to their resistance to corrosion in saltwater environments. Their versatility extends to the electrical industry for housings and connectors, as well as industrial machinery for pump housings and gearboxes. With their exceptional properties, LM4 castings continue to serve as a reliable solution across diverse applications, ensuring optimal performance and longevity.
Overall, LM4 castings offer a versatile solution across industries where lightweight, corrosion-resistant, and high-strength components are required.
LM4 Chemical Composition
| Copper (Cu) | 2.0 – 4.0 % |
|---|---|
| Magnesium (Mg) | 0.15 max |
| Silicon (Si) | 4.0 – 6.0 |
| Iron (Fe) | 0.8 max |
| Manganese (Mn) | 0.2 – 0.6 |
| Nickel (Ni) | 0.3 max |
| Zinc (Zn) | 0.5 max |
| Lead (Pb) | 0.1 max |
| Tin (Sn) | 0.1 max |
| Titanium (Ti) | 0.2 max |
| Aluminium (Al) | Remainder |
LM4 Mechanical Properties
| 0.2% Proof Stress (N/mm2) | 70-110 |
|---|---|
| Tensile Strength (N/mm2) | 140-170 |
| Elongation (%) | 2-3 |
| Impact Resistance Izod (Nm) | 1.4 |
| Brinell Hardness Number | 65-80 |
| Modulous Of Elasticity | 71 |