Modifiers are alloys of Aluminium and Strontium, sometimes also containing Silicon.
Chemical
Analysis
Grade |
% Sr |
%
Si |
%
Al |
AlSr5 |
4.5-5.5 |
- |
Balance |
AlSr5Si |
4.5-5.5 |
As required |
Balance |
AlSr10 |
9.5-10.5 |
- |
Balance |
AlSr10Si |
9.5-10.5 |
As required |
Balance |
Application
Modifiers transform the coarse plate-like crystals of silicon in to finely dispersed granular shapes. This improves mechanical properties and machinability. Being metallic modifier, the addition is safer and more effective compared to salts. Used for hypo-eutectic alloys only.
Size Range |
100 g, 200 g, 500 g, 3 Kg. |
Shape |
Cut Rods, Piglets, Ingots. |
Addition |
| AlSr5 |
0.20-1.00 % |
| AlSr10 |
0.10-0.50 % |
|
Packing |
25 Kg, 50 Kg – HDPE Bags, 100 Kg – Steel Drums, Wooden Pallets. |
Storage |
If stored in low humidity environment in the same packing, product can be preserved for a long time. |
|
|
