Penetration Grades

Penetration grade bitumen is classified based on its hardness or consistency, which is determined by a standardized test. In this test, a needle is allowed to penetrate the bitumen under specified conditions of temperature, time, and load. The depth of penetration, measured in tenths of a millimeter, determines the bitumen’s grade. Lower penetration values indicate harder bitumen, while higher penetration values indicate softer bitumen. This classification is critical for ensuring that the bitumen used in a project is suited to the local climate and traffic conditions.

At Black Gold Company, we specialize in providing high-performance penetration grade bitumen, an essential material for road construction and other infrastructure projects. Penetration grade bitumen is one of the most widely used types of bitumen, known primarily for its versatility and ability to withstand a variety of weather conditions. Our products are carefully designed to meet the demanding needs of modern infrastructure projects while ensuring durability and long-term performance.

Why Choose Black Gold for Penetration Grade Bitumen?

Black Gold is a trusted leader in the supply of high-grade bitumen products. Our penetration grade bitumen is sourced and manufactured to meet the highest industry standards, ensuring that every batch delivers unmatched reliability and performance. With years of experience in the bitumen and asphalt industry, we are dedicated to providing solutions that meet the unique needs of our clients, whether for large-scale highway projects or small commercial developments.

Applications of Penetration Grade Bitumen

Penetration grade bitumen is highly versatile and plays a key role in a variety of construction applications, including:

Road Construction: Whether for highways, urban roads, or rural pathways, penetration grade bitumen is used to create durable and long-lasting asphalt layers that can withstand varying traffic loads and weather conditions.

Airport Runways: High-quality bitumen is essential for building runways that must endure heavy aircraft loads and extreme temperature fluctuations.

Parking Lots and Driveways: Our bitumen ensures smooth, strong, and crack-resistant surfaces in commercial and residential parking spaces.

Bridge Decks and Industrial Projects: Specially formulated bitumen is used in waterproofing and surfacing bridge decks and other industrial structures that demand enhanced protection from water and wear.

Bitumen penetration analysis 40/50
Test Title Result Standard range TEST Method
SP gr @25/25 cc 1.04 Min: 1.01 – Max: 1.06 ISIRI 2956 – ASTM D70
Penetration @25c c-100gr-5s 45.7 Min: 1.01 – Max: 1.06 ISIRI 2950 – ASTM D5
Softening Point 53.2 Min: 1.01 – Max: 1.06 ISIRI 3868 – ASTM D36
Solubility in Trichloroethylene (bitumen content) 99.99 Min: 1.01 – Max: — ISIRI 2953 – ASTM D4
Ductility @25 cc cm >100 Min: 1.01 – Max: — ISIRI 3866 – ASTM D113
Flash Point cc 319 Min: 1.01 – Max: — ISIRI 1175 – ASTM D92
Loss On heating w t% 0.03 Min: — – Max: 0.2 ISIRI 2957 – ASTM D6
Drop Penetration after loss on heat 8.1 Min: — – Max: 20 ISIRI 2950 – ASTM D6 & D5
Spot Test Negative Negative ISIRI 2949
Test Title Result Standard range TEST Method
SP gr @25/25 cc 1.02 Min: 1.01 – Max: 1.06 ISIRI 2956 – ASTM D70
Penetration @25c c-100gr-5s 65.4 Min: 60 – Max: 70 ISIRI 2950 – ASTM D5
Softening Point 49.7 Min: 49 – Max: 56 ISIRI 3868 – ASTM D36
Solubility in Trichloroethylene (bitumen content) 99.99 Min: 99.5 – Max: — ISIRI 2953 – ASTM D4
Ductility @25 cc cm >100 Min: 100 – Max: — ISIRI 3866 – ASTM D113
Flash Point cc 321 Min: 232 – Max: — ISIRI 1175 – ASTM D92
Loss On heating w t% 20.0 Min: — – Max: 0.2 ISIRI 2957 – ASTM D6
Drop Penetration after loss on heat 7.93 Min: — – Max: 20 ISIRI 2950 – ASTM D6 & D5
Spot Test Negative Negative ISIRI 2949
Test Title Result Standard range TEST Method
SP gr @25/25 cc 1.02 Min: 1.01 – Max: 1.06 ISIRI 2956 – ASTM D70
Penetration @25c c-100gr-5s 91.2 Min: 85 – Max: 100 ISIRI 2950 – ASTM D5
Softening Point 45.9 Min: 45 – Max: 0 ISIRI 3868 – ASTM D36
Solubility in Trichloroethylene (bitumen content) 99.98 Min: — – Max: — ISIRI 2953 – ASTM D4
Ductility @25 cc cm >100 Min: 100 – Max: — ISIRI 3866 – ASTM D113
Flash Point cc 322 Min: 232 – Max: — ISIRI 1175 – ASTM D92
Loss On heating w t% 0.03 Min: — – Max: 0.2 ISIRI 2957 – ASTM D6
Drop Penetration after loss on heat 8.1 Min: — – Max: 20 ISIRI 2950 – ASTM D6 & D5
Spot Test Negative Negative ISIRI 2949
Test Title Result Standard range TEST Method
SP gr @25/25 cc 1.013 Min: 1.01 – Max: 1.06 ISIRI 2956 – ASTM D70
Penetration @25c c-100gr-5s 132.0 Min: 120 – Max: 150 ISIRI 2950 – ASTM D5
Softening Point 42 Min:38 – Max: 0 ISIRI 3868 – ASTM D36
Solubility in Trichloroethylene (bitumen content) 99.99 Min: — – Max: — ISIRI 2953 – ASTM D4
Ductility @25 cc cm >100 Min: 100 – Max: — ISIRI 3866 – ASTM D113
Flash Point cc 323 Min: 232 – Max: — ISIRI 1175 – ASTM D92
Loss On heating w t% 0.03 Min: — – Max: 0.2 ISIRI 2957 – ASTM D6
Drop Penetration after loss on heat 8.3 Min: — – Max: 20 ISIRI 2950 – ASTM D6 & D5
Spot Test Negative Negative ISIRI 2949
Test Title Result Standard range TEST Method
SP gr @25/25 cc 1.011 Min: 1.01 – Max: 1.06 ISIRI 2956 – ASTM D70
Penetration @25c c-100gr-5s 250.0 Min: 200 – Max: 300 ISIRI 2950 – ASTM D5
Softening Point 38 Min:35 – Max: 40 ISIRI 3868 – ASTM D36
Solubility in Trichloroethylene (bitumen content) 99.98 Min: — – Max: — ISIRI 2953 – ASTM D4
Ductility @25 cc cm >100 Min: 100 – Max: — ISIRI 3866 – ASTM D113
Flash Point cc 325 Min: 232 – Max: — ISIRI 1175 – ASTM D92
Loss On heating w t% 0.04 Min: — – Max: 0.2 ISIRI 2957 – ASTM D6
Drop Penetration after loss on heat 8.2 Min: — – Max: 20 ISIRI 2950 – ASTM D6 & D5
Spot Test Negative Negative ISIRI 2949

*To download the above tables as a PDF, please click here.