Bitumen vs Asphalt: What is the Difference?
Last updated: 2026-09-29
Bitumen vs Asphalt: What is the Difference?
Bitumen is the black, sticky, semi-solid hydrocarbon binder refined from crude oil (penetration grade 40/50, 60/70, or 85/100), while asphalt is the finished construction material made by mixing bitumen (typically 5–7% by weight) with crushed stone, sand, and filler at 150–160°C. In short: bitumen is the glue, asphalt is the glued-together mix. In the US and Canada, "asphalt" is often used loosely to mean the binder itself, but in export markets across Africa, the Middle East, and Asia, the technical distinction matters — and it directly affects your cost per ton.
Bitumen vs Asphalt: The Core Difference in One Table
| Feature | Bitumen | Asphalt |
|---|---|---|
| Definition | Refined crude oil hydrocarbon binder | Bitumen + aggregates (stone, sand, filler) |
| Composition | ~100% hydrocarbon binder | 5–7% bitumen + 93–95% aggregate |
| State | Semi-solid at 25°C, liquid at 150–160°C | Solid, laid hot at 140–160°C |
| Primary Use | Binder, waterproofing, roofing, sealants | Roads, highways, airfields, pavements |
| HS Code | 2713.20 (petroleum bitumen) | 2715.00 (bituminous mixtures) |
| Unit | Sold by metric ton in drums, bulk, or bulk bags | Sold by ton of mix or m² of pavement |
| Typical Price (2024–2025) | $380–$620 per MT FOB (grade-dependent) | $90–$140 per ton of mix (regional) |
| Key Test | Penetration (25°C, 100g, 5s), softening point | Marshall stability, air voids (3–5%) |
| Source | Refinery product | Asphalt plant product |
The most important takeaway: bitumen is a raw material; asphalt is a finished product. One ton of asphalt pavement typically contains only 50–70 kg of bitumen — the rest is aggregate.
H2: Chemical Composition and How Each Is Produced
Bitumen is the heaviest fraction of crude oil refining, produced through vacuum distillation of residue from atmospheric distillation towers. Heavier crudes (Venezuelan, Middle Eastern) yield the best bitumen. Global production sits at roughly 100–110 million metric tons per year.
- Step 1: Crude oil → atmospheric distillation (light fuels removed)
- Step 2: Vacuum distillation at reduced pressure → vacuum residue
- Step 3: Further processing (air blowing, solvent de-asphalting) to reach target penetration grade
- Step 4: Quality testing: penetration, softening point, viscosity at 135°C, flash point
Asphalt (asphalt concrete, hot mix asphalt/HMA) is manufactured at an asphalt plant:
- Aggregate drying and heating: stone, sand, and gravel heated to 150–170°C in a rotary dryer
- Binder addition: bitumen at 5–7% by weight pumped into the mixer
- Mixing: 30–60 seconds in a pugmill
- Transport: delivered to site within 1–4 hours at minimum 135°C paving temperature
- Compaction: rolled to 92–95% of maximum theoretical density
| Property | Bitumen (60/70 pen) | Asphalt Concrete (typical) |
|---|---|---|
| Penetration @ 25°C | 60–70 (0.1 mm) | Not applicable |
| Softening point | 49–56°C | Not applicable |
| Marshall stability | Not applicable | 8–12 kN |
| Air voids | 0% | 3–5% |
| Density | 1.01–1.06 g/cm³ | 2.3–2.5 g/cm³ |
H2: Bitumen Grades, Pricing, and Export Specifications
If you are importing bitumen for road construction, grade selection is your biggest cost lever. Prices below reflect typical FOB levels for bulk vessel or drum shipments to West Africa, East Africa, and South Asia.
| Grade | Penetration @25°C | Common Market | Indicative Price (USD/MT FOB) |
|---|---|---|---|
| 40/50 | 40–50 | High-temperature roads, Middle East | $430–$520 |
| 60/70 | 60–70 | Africa, India, SE Asia (most common) | $400–$480 |
| 80/100 | 80–100 | Cold climates, Europe | $390–$460 |
| 85/100 | 85–100 | Iran-origin export standard | $380–$450 |
| PG 64-22 | Performance grade | US Superpave spec | $480–$620 |
| Cutback / Emulsion | Liquid at ambient | Patching, tack coats | $450–$700 |
Logistics benchmarks you should know:
- Drummed bitumen: 150 kg or 180 kg drums; a 20ft container holds ~80 drums = 14.4 MT (at 180 kg)
- Bulk bitumen: 1,000–5,000 MT per vessel; heated tanks required at 130–150°C
- Bulk bags (jumbo bags): typically 1 MT per bag, ~20 MT per 20ft container
- Loading time: 2–4 days per 1,000 MT at port; drum stuffing takes 5–7 days per 20ft container
Watch the price spread. Between Q1 2024 and Q1 2025, 60/70 bitumen FOB prices moved within a $400–$520/MT band — a 30% swing that can add or remove $1.2 million on a 10,000 MT annual contract. Grade selection, drum vs bulk, and origin (Iran, UAE, Bahrain, Singapore, Korea) can shift your landed cost by $40–$90 per MT.
H2: Bitumen vs Asphalt in Road Construction: Where Each Is Used
Different layers of a road use different materials. This is where the bitumen/asphalt distinction becomes practical:
| Road Layer | Material | Binder Content | Thickness |
|---|---|---|---|
| Surface course (wearing course) | Asphalt concrete | 5.5–7% | 30–50 mm |
| Binder course | Asphalt concrete | 4.5–5.5% | 50–80 mm |
| Base course | Asphalt or granular | 3.5–5% | 80–200 mm |
| Prime coat | Cutback bitumen | 100% bitumen | 0.5–1.5 kg/m² |
| Tack coat | Bitumen emulsion | 50–70% bitumen | 0.2–0.5 kg/m² |
| Waterproofing / roofing | Oxidized bitumen | 100% | 3–4 mm membrane |
Example consumption for a 1 km two-lane road (7 m wide):
- Surface course, 40 mm thick: ~700 tons of asphalt mix
- Bitumen content at 6%: ~42 MT of bitumen
- Tack coat emulsion: ~3 MT
- Total bitumen demand: ~45 MT per km
This math is why bitumen traders quote in full container loads (14.4 MT) or vessel parcels — a single 100 km road project needs 4,500 MT or more of bitumen, or roughly 310 containers of drummed product.
H2: Common Misunderstandings and Regional Terminology
The bitumen vs asphalt confusion is mostly linguistic, and it costs buyers real money when specs get mixed up.
- UK / International / Export markets: "Bitumen" = the binder. "Asphalt" = the mix. This is the ISO and CEN convention.
- US / Canada: "Asphalt" or "asphalt cement" = the binder. "Asphalt concrete" = the mix.
- Australia / NZ: Follows the UK convention.
- Common error: A buyer orders "asphalt" from an Asian supplier and receives a binder quote, or orders "bitumen" expecting a ready-to-pave mix.
Other products often confused with bitumen:
- Tar (coal tar): produced from coal, carcinogenic, not a petroleum product; HS code 2706
- Pitch: residue from tar distillation
- Cutback bitumen: bitumen + solvent (kerosene/diesel), used for cold applications
- Bitumen emulsion: bitumen + water + emulsifier, ~50–70% bitumen content
H2: How to Choose the Right Product for Your Project
| Your Need | Choose | Spec to Quote |
|---|---|---|
| Road paving binder | Bitumen | 60/70 pen, EN 12591 or ASTM D946 |
| Ready-to-lay pavement | Asphalt | Marshall or Superpave mix design |
| Roofing / waterproofing | Oxidized bitumen | 85/25, 95/25, 105/15, 115/15 |
| Patching in cold weather | Cutback or emulsion | MC-30, RC-250, CSS-1h |
| Airport runways | PG-graded bitumen | PG 64-22 to PG 76-22 |
| Spray seal / chip seal | Bitumen emulsion or hot bitumen | CRS-2, ARS-2, 180/200 pen |
Budgeting rule of thumb: For a typical export transaction, add $60–$120 per MT to the FOB price for ocean freight, drums, port handling, and inland delivery. On a 20ft container of 80 drums (14.4 MT), that is $900–$1,700 per container in landed cost on top of product cost.
FAQ: Bitumen vs Asphalt Difference
Q1: Is bitumen the same as asphalt?
No — bitumen is the binder refined from crude oil, while asphalt is the finished mix of bitumen (5–7%) plus aggregate (93–95%). In the US the words are sometimes used interchangeably for the binder, but in international trade they describe two different products with different HS codes (2713.20 vs 2715.00).
Q2: What does 1 ton of asphalt contain in terms of bitumen?
One ton of asphalt mix typically contains 50–70 kg of bitumen, depending on the mix design. That means a 20 MT truckload of asphalt delivers only about 1.0–1.4 MT of actual bitumen to the road surface.
Q3: Which is cheaper, bitumen or asphalt?
Per ton, asphalt mix is cheaper ($90–$140/ton) because it is mostly stone and sand, while bitumen trades at $380–$620/MT. However, you must buy both — asphalt cannot be made without bitumen, so the bitumen cost is embedded in every ton of asphalt.
Q4: What is the price difference between 60/70 and 40/50 bitumen?
In 2024–2025, 40/50 penetration bitumen typically costs $20–$60 more per MT than 60/70, reflecting higher refining severity and stronger high-temperature performance. For a 10,000 MT annual contract, that spread equals $200,000–$600,000.
Q5: How many days does it take to ship 1,000 MT of bitumen?
A 1,000 MT bulk bitumen parcel typically loads in 2–4 days and takes 7–21 days of ocean transit depending on route (e.g., UAE to Nigeria ~14–18 days; Korea to India ~12–16 days). Drummed shipments add 5–7 days for container stuffing, plus 3–5 days of customs clearance at destination.
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