Bitumen 85/40 — Hard & Durable Air-Blown Oxidized Bitumen Supplier

Bitumen 85/40 is a hard, durable oxidized bitumen produced through controlled air blowing, offering excellent heat resistance, thermal stability, and waterproofing performance. This grade is widely used in roofing, industrial coatings, insulation, and membrane applications where long-term durability under heat stress is essential. As a trusted Bitumen 85/40 manufacturer and exporter, we deliver consistent product quality, reliable global supply, and complete technical documentation with every shipment.

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What is Bitumen 85/40?

Oxidized Bitumen 85/40 is an air-blown bitumen grade with a softening point near 85°C and a penetration value around 40 (0.1mm). As the most flexible grade in the 85-series, it combines high thermal stability with improved elasticity, resisting cracking under load, temperature swings, and weather conditions.

Oxidized Bitumen 85/40 is commonly used in roofing membranes, waterproofing systems, road pavement additives, and industrial mastics. Its balanced hardness and flexibility make it well suited for foundations, damp-proofing, sealants, and adhesive applications requiring reliable performance across varying temperatures in demanding construction and infrastructure projects worldwide.

Black Rock Bitumen supplies Oxidized Bitumen 85/40 tested to ASTM standards, ensuring consistent softening point, penetration, and quality across every shipment. Sourced from certified refineries and shipped through our Dubai logistics hub, our Oxidized Bitumen 85/40 delivers dependable, export-grade performance for construction and industrial projects worldwide.

Applications of Bitumen 85/40

Road and airfield pavement expansion joint sealant (hot-pour)
Bridge deck expansion joint sealant and movement accommodation layer
Flexible waterproofing membrane for structures subject to thermal or dynamic movement
Base bitumen for high-content SBS elastomeric modified membranes

Advantages of Bitumen 85/40

Suitable for application on live pipelines operating at surface temperatures up to 80°C

High Heat Stability

High softening point (85–95°C) for heat stability, matching the 85/25 and 85/35 grades in thermal performance

Maximum Flexibility

Highest penetration in the 85-series (35–45 dmm) — the softest and most flexible within the 85°C SP family

Crack & Movement Resistance

Excellent accommodation of joint movement, substrate cracking, and thermal cycling in sealant applications

All-Climate Performance

Good cold-temperature flexibility — suitable for use in temperate and variable-climate markets

Strong Surface Adhesion

Strong adhesion to concrete, asphalt, masonry, and metal substrates

Polymer-Ready Base

Good elastic recovery properties when used as a base for polymer-modification

Black Rock Bitumen 85/40

Essential Details

Description

  • Type
  • Oxidized Bitumen
  • Feed Stock
  • Crude Oil
  • HS Code
  • 27132000
  • Spot Test
  • Negative
  • Inspection
  • Included
  • Delivery Term
  • FOB-CFR-CIF
  • Production and Loading Period
  • FOB-CFR-CIF
  • Payment Term
  • TT Method FOB Delivery: 30% advance and balance against customs documents CFR/CIF Delivery: 30% advance and balance against B/L daft
  • Marking
  • Marking can be customized based on customer request
  • Supply Capacity
  • 50,000 MT/Month
  • Packing
  • -New Steel Drum -Jumbo Bag

Bitumen 85/40 Specification

Oxidized Bitumen 85/40 Specifications

Essential Details

Test Method

Unit

Min.

Max.

  • Specific Gravity at 25 °C
  • ASTM D70 / EN 15326
  • kg/cm³
  • 1.05 (approx.)
  • -
  • Penetration at 25 °C, 100g, 5s
  • ASTM D5 / EN 1426
  • mm/10
  • 35
  • 45
  • Softening Point
  • ASTM D36 / EN 1427
  • °C
  • 85
  • 95
  • Ductility at 25 °C
  • ASTM D113
  • cm
  • 100
  • –
  • Loss on Heating
  • ASTM D6 / EN 13303
  • %
  • –
  • 0.2
  • Drop in Penetration after Heating
  • ASTM D5
  • %
  • –
  • 20
  • Flash Point
  • ASTM D92 / EN ISO 2592
  • °C
  • 250
  • –
  • Solubility in Trichloroethylene
  • ASTM D4 / EN 12592
  • %
  • 99
  • –
  • Spot Test
  • AASHTO T102
  • Negative

Bitumen 85/40 MSDS

pdf

Bitumen 85/40 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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    Superior quality penetration grade bitumen which offers high performance and sustainability through the harshest climates.

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    It offers consistency, durability and sustainable road construction performance.

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    Our faqs

    Frequently Asked Questions.

    Oxidized Bitumen Grade 85/40 delivers high softening point, strong durability, and reliable waterproofing for roofing, coatings, insulation, and industrial applications.

    Bitumen 85/40 is an air-blown bitumen with a softening point of 85°C and penetration of 40 dmm, making it one of the more flexible grades in the 85-series.

    It is used in roofing felt, waterproofing membranes, and flexible industrial coating applications where added elasticity is beneficial.

    Bitumen 85/40 has the highest penetration of the 85-series grades, making it the softest and most flexible, suited to applications prioritizing elasticity over maximum heat resistance.

    Its higher flexibility can offer better resistance to cracking in colder conditions compared to harder oxidized grades, though specific project requirements should guide grade selection.

    Bitumen 85/40 is typically tested per ASTM D312 for softening point, penetration, and related physical properties.

    Application temperatures generally range from 190–210°C, depending on the specific hot-applied process.

    Store in a cool, dry, covered area away from direct heat, in sealed drums or blocks to prevent moisture ingress and contamination.

    Black Rock Bitumen supplies Bitumen 85/40 in steel drums, jumbo bags, or bulk, with FOB, CFR, or CIF delivery terms. BITUMEN 90/10 H1: Bitumen 90/10 — High-Hardness Air-Blown Oxidized Bitumen Supplier Description: Bitumen 90/10 is a hard, air-blown oxidized bitumen offering excellent thermal stability, durability, and resistance to flow at high temperatures — making it ideal for demanding industrial and waterproofing applications. With its high softening point and low penetration, Bitumen 90/10 maintains structural integrity even under extreme heat, ensuring long-term performance where standard bitumen grades would soften or deform. As a trusted Bitumen 90/10 manufacturer and exporter, we deliver consistent quality, reliable global supply, and complete technical documentation with every order. CTA: Get a Bitumen 90/10 Quote → ________________ Paragraph 1 – What it is (definition): Oxidized Bitumen 90/10 is an air-blown bitumen grade with a softening point near 90°C and a penetration value around 10 (0.1mm). As one of the hardest oxidized grades available, it offers exceptional rigidity, minimal temperature sensitivity, and strong resistance to deformation under extreme heat conditions worldwide. (46 words) Paragraph 2 – Where it's used (applications): Oxidized Bitumen 90/10 is widely used in battery manufacturing, electrical insulation, expansion joint sealing, and industrial waterproofing systems. Its hard, stable structure also suits pipe coatings, damp-proofing membranes, and adhesive applications that demand consistent performance under high heat and mechanical stress across construction and industrial projects. (46 words) Paragraph 3 – Why buy from Black Rock Bitumen (trust/quality): Black Rock Bitumen supplies Oxidized Bitumen 90/10 tested to ASTM standards, ensuring consistent softening point, penetration, and purity in every shipment. Sourced from certified refineries and shipped through our Dubai logistics hub, our Oxidized Bitumen 90/10 delivers dependable, export-grade quality for dem