Modifier
| A-129 | Modifier for A1 – Si eutectic Alloy containing Silicon in the range of 10 to 13% for high Operating Temperature (790° – 800° C) | 1.5% |
| A-136 | Modifier for A1- Si eutectic Alloy containing Silicon in the range of 10 to 13% for lower Operating Temperate (740° – 750° C) | Upto 1.5% |
| A-58 | Modifier for operating temperature at or less than 750° C | Upto 1.5% |