Bitumen Penetration Grade 40/60

Iran Bitumen 40/60

Penetration Grade Bitumen, is classified by influence trait. Also This grading’s basic assumption is that less viscous asphalt, deeper the needle will penetrate. Bitumen which is made during oxidation process of vacuum bottom. Bitumen production feed-stock that derives from distillation tower residue in vacuum oil refineries. At bitumen production unit in a manner that its penetration point.

Bitumen Penetration Grade 40/60 is hard penetration grade bitumen using as paving grade bitumen suitable for road construction and repair also for the production of asphalt pavements with below technical specification. Meanwhile This grade of bitumen is mainly used in the manufacture of hot mix asphalt for bases and wearing courses.

Softening Point and Penetration of Bitumen 40/60

However Penetration grade bitumen supplied by PUBLTD co and  is pure petroleum grade bitumen. Also manufactured from vacuum bottom by passing hot air. Also The bitumen supplied by PUBLTD co is produced from remain of crude oil after cracking and removing hydrocarbon. Therefore Penetration grade bitumen 30/40 has penetration between 40~60 desi-millimeter and softening point between 55 ~ 63C. The penetration grade bitumen 30/40 has a thermoplastic property which is like as synthetic resin material which gets softer with heating and hardens when cooled. Also This grade of bitumen 40/60has very strong viscosity compare to other grades.

Guaranty|warranty of Bitumen Penetration Grade 40/60

PUBLTD co guaranty the quality of Bitumen Penetration Grade 40/60 with arrangement of international inspector to check quality and quantity of the bitumen during the loading to vessel and controlling the production by QC by batch test report before shipping. In addition PUBLTD co guaranty the quality and to meet with ASTM/EN 12591.

Usage :

“asphalt” and “bitumen” are often used interchangeably to mean both natural and manufactured forms. However In American English, “asphalt” (or “asphalt cement”) is commonly used for a refined residue from the distillation process of selected crude oils. In addition Outside the United States, the product is often called “bitumen” and geologists worldwide often prefer the term for the naturally occurring variety. Also Common colloquial usage often refers to various forms of asphalt as “tar”, as in the name of the La Brea Tar Pits.

As a result, Naturally occurring asphalt is sometimes specified by the term “crude bitumen”. Its viscosity is similar to that of cold molasses while the material obtained from the fractional distillation of crude oil boiling at 525 °C (977 °F) is sometimes referred to as “refined bitumen”.

Specification of Bitumen Penetration Grade 40/60

Bitumen 40/60


Test method

Specific gravity @ 25/25 cg



Penetration @ 25 c



Softening point c



Ductility @25 c

100 min


Loss on heating(wt) %

0.2 Max


Drop in penetration after heating %

5 Max

D-6 D-5

Flash point c

230 min


Solubility is CS2(wt) %

99.5 Max


Spot test