LM-24 / AC-4B Aluminium Alloy
Request a call back
Price on Request/ KgGet latest price
Grade-based, per-kg pricing. Share your monthly tonnage for a commercial offer.
| Category | Alloys |
|---|---|
| Grade | Die-casting grade |
| Standard referenced | BS 1490 (LM-24) / JIS H5202 (AC-4B) |
| Supplied as | Ingots |
| Typical use | Pressure & gravity die-casting |
| Supplied formats | Notched ingots, Customer-specified ingot weights |
| Place of origin | India |
LM-24 (and its close JIS equivalent AC-4B) is a copper-bearing aluminium–silicon die-casting alloy used where castings need more strength and better machinability than a straight Al-Si grade delivers.
Vaishnavi Enterprises processes LM-24 / AC-4B from segregated scrap streams, holding the chemistry within the standard band so that die-casters can run it without adjusting their process.
Applications:
- Structural die-cast components
- Pump and compressor bodies
- Machined castings requiring good finish
- General engineering castings
Indicative chemistry (BS 1490 (LM-24) / JIS H5202 (AC-4B)):
Typical composition quoted against the published standard. Actual per-heat chemistry is confirmed against each order before despatch.
| Element | Composition |
|---|---|
| Silicon (Si) | 7.5 – 9.5% |
| Copper (Cu) | 3.0 – 4.0% |
| Iron (Fe) | 1.3% max |
| Manganese (Mn) | 0.5% max |
| Magnesium (Mg) | 0.3% max |
| Nickel (Ni) | 0.5% max |
| Zinc (Zn) | 3.0% max |
| Lead (Pb) | 0.3% max |
| Tin (Sn) | 0.2% max |
| Titanium (Ti) | 0.2% max |
| Aluminium (Al) | Balance |
