Penetration Bitumen Grade 70/90
Bitumen grade 70/90 is a premium brand that is dark brown or black color similar to cement-shape semi-solid or viscous liquid form produced by the non-destructive refining of crude oil during petroleum refining.
The exact chemical composition of bitumen is dependent on the chemical complexity of the original crude oil and the manufacturing process. Bitumen Grade 90/130 has mechanical properties as below table.
| Properties | specification | Test Method | |
| 70# | 90# | ||
| Penetration (25°C, 100g, 5s), 0.1mm | 60-70 | 80-100 | ASTM D5 / GB T4509 |
| Ductility (25°C), cm | ≥150 | ≥150 | ASTM D113 / GB T4508 |
| Softening Ponit, °C | 49-56 | 45-52 | ASTM D36 / GB T4507 |
| Solubility (in C2HC13), % | ≥99 | ≥99 | ASTM D4 / GB T11148 |
| Flash Point (Open Cup Method), °C | ≥260 | ≥260 | ASTM 92 / GB T267 |
| Wax content, % | ≤3 | ≤3 | SH T0425 |
