AC GRADES SPECIFICATIONS
| Specifics | Unit | AC 2.5 | TAC 5 | AC 10 | AC 20 | AC 30 | AC 40 | Test method |
| Kinematic viscosity @ 60C | P | 250 | 500 | 1000 | 2000 | 3000 | 4000 | ASTM D2171 |
| Kinematic viscosity @ 135C | cSt | 80 | 110 | 150 | 210 | 250 | 300 | ASTM D2171 |
| Flash point , C | °C | 163 | 177 | 219 | 232 | 232 | 232 | ASTM D92 |
| Solubility in trichloroethylene % | % | 99 | 99 | 99 | 99 | 99 | 99 | ASTM D 2042 |
| Penetration in 25 C | 0.1 mm | 200 | 120 | 70 | 40 | 30 | 20 | ASTM D5 |
| Tests on residue from thin-film oven test | ||||||||
| Viscosity, 140°F (60°C), Max | p | 1250 | 2500 | 5000 | 10000 | 15000 | 20000 | ASTM D2171 |
| Ductility, 77°F (25°C), 5cm/min, Min | cm | 100 | 100 | 50 | 20 | 15 | 10 | ASTM D113 |