Cutback SC 70
Our SC-70 bitumen is a slow-curing cutback formulated to provide extended curing time and deep penetration into granular surfaces, making it suitable for priming and preparatory road works.
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SC 70 Specification
SC 70 CutBack Bitumen Specifications
Essential Details
Test Method
Unit
Min.
Max.
- Kinematic Viscosity at 60 °C (140 °F)
- ASTM D2170
- mm²/s
- 70
- 140
- Flash Point (Tag Open-Cup)
- ASTM D3143
- °C
- 60
- -
- Total Distillate to 360 °C (680 °F)
- ASTM D402
- vol.%
- -
- 35
- Solubility in Trichloroethylene
- ASTM D402
- vol.%
- 95
- -
- Kinematic Viscosity of Residue at 60 °C (140 °F)
- ASTM D402
- vol.%
- 200
- 700
- Residue from Distillation to 360 °C (680 °F)
- ASTM D402
- vol.%
- 40
- -
- Penetration of Residue at 25 °C
- ASTM D402
- 0.1 mm
- 120
- 300
- Ductility of Residue at 25 °C (77 °F)
- ASTM D5
- cm
- 100
- –
- Spot Test
- ASHTO T102
- Negative
Our Packaging
We deliver bitumen in versatile, secure options: economical Jumbo Bags, robust steel Drums, or high-volume Bulk Containers (Bitutainers/Bituboxes).
Terms of Payment
Payment Terms for Smooth Transactions
TT Method
The buyer pays 30% advance, with the balance against B/L draft (CFR) or customs docs (FOB).
LC at Sight
100% irrevocable, non-transferable, confirmed LC at sight, subject to bank approval by Black Rock Bitumen.
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Our faqs
Frequently Asked Questions.
Our SC-70 bitumen is a slow-curing cutback grade designed for deep penetration and durable bonding in prime coat and low-temperature road applications.
1. What is SC-70 bitumen?
SC-70 is a slow-curing cutback bitumen produced by blending penetration-grade bitumen with low-volatility solvents to allow gradual curing.
2. Where is SC-70 commonly used?
SC-70 is commonly used in:
- Prime coats on granular and absorbent base courses
- Soil stabilization
- Low-traffic road construction
3. Why is SC-70 classified as slow-curing?
SC-70 cures slowly, allowing deeper penetration and uniform binder distribution before solvent evaporation.
4. What are the advantages of using SC-70?
- Deep penetration into base layers
- Uniform bonding
- Reduced risk of premature curing
- Suitable for cooler climates
5. How should SC-70 be stored and handled?
SC-70 should be stored in sealed containers, kept away from heat and ignition sources, and handled with proper ventilation due to solvent content.



