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VG40
Viscosity Grade Analysis (VG40)
| Property | Unit | Requirement | Test method |
| Penetration @ 25 ᵒC | mm/10 | 40-60 | ASTM D5 |
| Softening point | ᵒC, min. | 50 | ASTM D36 |
| Ductility @ 25 ᵒC | cm, min. | 25 | ASTM D113 |
| Flash point | ᵒC, min. | 220 | ASTM D92 |
| Solubility in Trichloroethylene | Wt %, min. | 99.0 | ASTM D2042 |
| Viscosity ratio at 60 ᴼC | – | 4.0, max. | IS 1206(Part 2) |
| Absolute Viscosity @ 60 ᵒC | P, min. | 3200 | ASTM D2171 |
| Kinematic Viscosity @ 135 ᵒC | cst, min. | 400 | ASTM D2170 |
