Bitumen 115/15

Oxidized Bitumen Grade 115/15 is a high-softening, low-penetration bitumen engineered for demanding industrial and waterproofing applications. It offers excellent heat resistance, strong adhesion, and long-term durability, making it ideal for roofing membranes, pipe coatings, insulation, and corrosion protection systems.

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    What is Bitumen 115/15?

    Bitumen 150/5 represents the apex of the standard oxidized bitumen grade range: a product with an extraordinary softening point of 145–155°C and an ultra-low penetration of just 5–10 dmm.

    At this extreme specification, the material is no longer a pliable bituminous product in any conventional sense — it is essentially a hard, glassy bituminous compound that requires high-temperature processing equipment and delivers exceptional performance in the most demanding industrial environments imaginable.  Applications for Bitumen 150/5 are highly specialised: high-voltage electrical cable insulation and filling compounds, chemical-resistant linings for vessels handling aggressive process media, extreme-temperature industrial protective coatings, and specialist industrial manufacturing processes where a very-hard bituminous matrix is required.

    The grade is produced in relatively small volumes compared to standard construction grades, with strict quality controls to ensure the demanding softening point and penetration specifications are consistently achieved. 

    Our UAE supply facility maintains dedicated production capability for ultra-hard grades, supported by precise quality testing and a technical team experienced in the specific requirements of electrical, chemical, and extreme industrial applications.

    Applications of Bitumen 115/15

    HV/EHV Cable Filling

    High-voltage (HV) and extra-high-voltage (EHV) electrical cable filling and armour compound

    Chemical-Resistant Linings

    Chemical-resistant lining for process vessels, reactors, and tanks handling aggressive acids and alkalis

    Extreme Environment Coating

    Protective coating for industrial structures in extreme chemical environments (chlor-alkali, sulphuric acid, phosphoric acid plants)

    Switchgear Sealing Compound

    Hard bituminous compound for electrical switchgear base sealing and void filling

    Advantages of Bitumen 115/15

    Bitumen 150/5 serves a wide spectrum of construction, industrial, and infrastructure

    Extreme Heat Stability

    Extraordinary softening point of 145–155°C — the highest available in standard oxidized bitumen grades, suitable for extreme industrial thermal environments

    Ultra-Rigid Structure

    Ultra-low penetration of 5–10 dmm — essentially a solid, glass-hard material at ambient temperature

    High Electrical Insulation

    Exceptional electrical insulation properties: very high surface resistivity, low dielectric constant, and low loss factor

    Superior Chemical Resistance

    Outstanding chemical resistance to concentrated acids, alkalis, solvents, and aggressive process media

    Low Temperature Sensitivity

    Negligible temperature susceptibility below 120°C — properties virtually unchanged across wide temperature range

    Bio & Bacterial Resistance

    Excellent resistance to bacterial and biological degradation in chemical waste and process environments

    Black Rock Oxidized Bitumen 115/15

    Essential Details

    Description

    • Type
    • Oxidized Bitumen
    • Feed Stock
    • Crude Oil
    • HS Code
    • 27132000
    • Spot Test
    • Negative
    • Inspection
    • Excluded
    • Delivery Term
    • FOB-CFR-CIF
    • Production and Loading Period
    • Maximum 3 Weeks
    • Payment Term
    • TT Method FOB Delivery: 30% advance and balance against customs documents
    • Marking
    • Marking can be customized based on customer request
    • Supply Capacity
    • 50,000 MT/Month
    • Packing
    • -Carton -Poly Amide -Polyester -Economical 1350 KG carton

    Bitumen 115/15 Specification

    Oxidized Bitumen Grade 115/15 Specifications

    Essential Details

    Test Method

    Unit

    Min.

    Max.

    • Specific Gravity at 25 °C
    • ASTM D70
    • –
    • 1.01
    • 1.06
    • Penetration at 25 °C, 100g, 5s
    • ASTM D5
    • 0.1mm
    • 35
    • 50
    • Softening Point
    • ASTM D36
    • °C
    • 52
    • 60
    • Ductility at 25 °C
    • ASTM D113
    • cm
    • 100
    • –
    • Loss on Heating
    • ASTM D6
    • wt.%
    • –
    • 0.2
    • Drop in Penetration after Heating
    • ASTM D5
    • %
    • –
    • 20
    • Flash Point
    • ASTM D5
    • °C
    • 250
    • –
    • Solubility in Trichloroethylene
    • ASTM D2042
    • wt.%
    • 80% min
    • –
    • Spot Test
    • ASHTO T102
    • Negative

    Bitumen 115/15 MSDS

    pdf

    Bitumen 115/15 Safety Data Sheet

    Download
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    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.

      Oxidized Bitumen Grade 115/15 is a high-softening, low-penetration bitumen designed for superior waterproofing, insulation, and industrial durability.

      Oxidized Bitumen 115/15 is an air-blown bitumen with a softening point of 115°C and penetration of 15 dmm, offering high thermal stability and hardness.

      What are the main applications of 115/15 oxidized bitumen?

      It is widely used in roofing felts, waterproofing membranes, industrial coatings, pipe insulation, and corrosion-resistant applications.

      This grade provides superior heat resistance, reduced flow at high temperatures, improved durability, and better performance in demanding industrial environments.

      Yes, its high softening point makes it ideal for hot and tropical climates where thermal stability and shape retention are critical.

      Black Rock Bitumen supplies 115/15 in bulk, steel drums, and meltable packaging, ensuring safe handling and efficient global transportation.

      Yes. With a penetration of only 5–10 dmm, the product is essentially solid-brittle at ambient temperature (20–25°C). It is designed to be processed in the molten state. Mechanical impact should be avoided in the solid state.

      Typical surface resistivity exceeds 10¹³ Ω·cm. Dielectric constant (at 1 kHz) is typically 2.7–3.0. Volume resistivity and dielectric breakdown data are available in our TDS.

      Yes. We supply to HV cable manufacturing plants globally, primarily in the Middle East, South Asia, North Africa, and Eastern Europe.

      What are the supply lead times?Yes. For cable manufacturing plants using hot-melt processing, we can discuss bulk hot-supply options to minimise handling. Standard supply is in 25 kg bags or 200 L drums.

      Due to the specialised nature of this grade, lead times may be longer than standard grades — typically 14–21 working days ex-works UAE. Please plan your procurement schedule accordingly.