On the specific requirement for the engineering industries, LM- 27 is the alloy where Silicon (Si), Copper (Cu), and Manganese (Mn) plays an important role and due to presence of Cu and Mn some automobile and defense components are produced through cold chamber pressure die casting procedures. So far in this country defense components are imported from overseas markets.
Chemistry
| Alloying Elements(%) | |||
| Si | – | 6.00 – 8.00 | |
| Cu | – | 1.50 – 2.50 | |
| Mn | – | 0.20 – 0.60 | |
| Impurities | Mg | – | 0.3 M |
| Fe | – | 0.8 M | |
| Ni | – | 0.3 M | |
| Zn | – | 0.8 M | |
| Sn | – | 0.1 M | |
| Ti | – | 0.1 M | |
| Pb | – | 0.2 M | |