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Bitumen 60/70

As the Bitumen 60/70 mode is dependent on temperature, the penetration grade bitumen has a thermoplastic property which causes the material to soften at high temperatures and to harden at lower temperatures. Bitumen Penetration determines the hardness of bitumen by measuring the depth to which a standard loaded the needle will vertically penetrate in 5 seconds, in a sample of bitumen maintained at a temperature of 25 degrees Celsius. This unique temperature-viscosity relationship of Bitumen is important when determining the performance parameters such as the adhesion, rheology, durability and application temperatures of bitumen.

When we say Bitumen penetration grade 60/70, it defines the penetration value of the bitumen. The number 60/70 displays the penetration range between 60 to 70 at standard test conditions. This penetration range is appropriate for application in road construction and paving. It is necessary to know that Bitumen is specified by the penetration and softening point tests.

Penetration Grade Bitumen 60/70 supplied by PARS BITUMEN Company is applicable for the production of hot mix asphalt for foundations, pavements and road construction. Bitumen 60/70 is produced through aeration on vacuum bottom (the raw material used for making bitumen left in vacuum distillation column in oil refineries) in bitumen production units.

The temperature-vs-stiffness relationship of bitumen is dependent on the type of crude oil and its refining method. Bitumen penetration grade 60/70 is semi-hard penetration grade bitumen used as a paving grade bitumen which is suitable for road construction and repairing. It is also used for the production of asphalt pavements with the below technical specification. This grade of bitumen is mainly used in the manufacturing of hot mix asphalt for bases and wearing courses. Bitumen 60/70 is one of the most used bitumen grades and it’s a basic material for all other bituminous products.

Bitumen 60/70 in Metal drums
Bitumen 60/70in Metal drums


Application of bitumen penetration grade 60/70


Bitumen 60/70 is suitable for road construction and for the asphalt pavements with superior properties. This type of bitumen is applied to produce hot mix asphalt for buildings foundations, wearing courses. The main application of this product is for the road construction in mild regions, because of its medium air blowing and penetration level.

Guarantee and safety of bitumen penetration 60/70


PARS BITUMEN Company guaranties the quality of its bitumen penetration grade 60/70 and is ready to arrange the quality and quantity inspections during production, packing, loading and pre-delivery inspection. PARS BITUMEN highly guarantees that its products are in compliance with quality features of ASTM test Standards.

Technical Specification of PARS BITUMEN penetration grade 60/70

Bitumen 60/70Test methodUnitSpecification
Specific gravity @ 25°CASTM D70Kg/cm31.01/1.06
Penetration @ 25°CASTM D5mm/1060/70
Softening point °CASTM D36°C49/56
Ductility @25 °CASTM D113cm100 min
Loss on heating(wt) %ASTM D6wt %0.2 max
Drop in penetration after heating %ASTM D5-D6%20 max
Flashpoint °CASTM D92°C232 min
Solubility in TrichloroethyleneASTM D2042wt %99 min
Spot testA.A.S.H.O.T102Negative
Bitumen 60/70 in jumbo bags
Bitumen 60/70 in jumbo bags