Mercedes Mullins
The idea that jet fuel or diesel fuel can melt steel is a common misconception. While diesel fuel can be used in melting furnaces, it does not burn hot enough to melt steel. Steel melts at temperatures of around 2750°F, while jet fuel burns at temperatures ranging from 800° to 1500°F. However, it is important to note that steel does not need to melt to cause structural damage; it can weaken and give way at much lower temperatures.
| Characteristics | Values |
|---|---|
| Can diesel fuel melt steel? | No, there is no scientific proof that diesel fuel can melt steel. |
| Jet fuel vs diesel fuel | Jet fuel is pretty close to #1 diesel (winter diesel). |
| Temperature required to melt steel | 1500°C or 2750°F |
| Temperature range of jet fuel | 800°F to 1500°F |
| Temperature range of kerosene fire | Can reach 900°F |
| Jet fuel ignition | Jet fuel auto-ignites with heat and compression. |
| Diesel fuel ignition | Diesel fuel requires a spark plug to ignite. |
| Diesel fuel storage | Diesel can be stored for longer periods than gasoline without losing strength. |
| Diesel fuel transportation | Diesel has a lower vapor pressure than gasoline, making it less volatile and easier to transport. |
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What You'll Learn
Diesel fuel can be used in a melting furnace
Diesel fuel cannot melt steel beams. However, it can weaken them. Steel melts at a temperature of 2750°F, and diesel burns at a much lower temperature of 800° to 1500°F.
While diesel fuel cannot melt steel, it can be used in a melting furnace. One user on a welding forum mentioned using a "pipe in a pipe" burner, with air from a blower through the outer pipe and diesel fuel through the inner pipe. This user found that diesel was easier to store, transport, and source than other fuels. Another user on the same forum mentioned using a similar setup to melt crucible steel. They started with LPG and then added diesel once the furnace was hot enough.
It is important to note that working with high temperatures and flammable substances can be dangerous. Proper safety precautions should always be followed when working with a melting furnace.
In conclusion, while diesel fuel cannot melt steel, it can be used as a fuel source in a melting furnace for other materials.
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Jet fuel can't melt steel, but it can weaken it
Jet fuel cannot melt steel, but it can weaken it. While jet fuel burns at a temperature range of 800° to 1500°C, steel melts at around 1370°C to 1500°C. However, low alloy steel loses about half its yield strength, a third of its ultimate strength, and a quarter of its stiffness at 900°F (482°C). This means that jet fuel fires can weaken steel without melting it.
The idea that jet fuel can weaken steel has been supported by various sources, including an angry blacksmith who demonstrated how jet fuel can indeed weaken steel beams. Additionally, a diesel tanker accident in Detroit resulted in a fire that weakened the steel beams of a bridge, causing it to collapse.
It is important to note that the burning temperature of jet fuel is influenced by the presence of oxygen. While jet fuel can burn at temperatures above 3000°C with sufficient oxygen, an open fuel fire's flame will be oxygen-starved and burn at lower temperatures.
The discussion around jet fuel and steel often arises in the context of the September 11 attacks on the World Trade Center towers. Aviation fuel was used in the planes that crashed into the towers, and it is argued that the fuel contributed to weakening the steel structures. However, it is also noted that the buildings may have already been weakened by an earlier terrorist attack.
In conclusion, while jet fuel cannot melt steel, it has the capacity to significantly weaken it by reducing its strength and causing structural integrity loss. This weakening effect, combined with other factors, can contribute to the collapse of steel structures.
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Jet fuel burns at 800-1500°F, while steel melts at 2750°F
Jet fuel burns at a temperature range of 800–1500 °F, whereas steel melts at 2750 °F. This means that jet fuel fires do not reach a high enough temperature to melt steel. However, steel can lose its strength at much lower temperatures, and jet fuel fires can reach temperatures above 3000 °C when there is an adequate oxygen supply, which is hot enough to melt steel.
The key point is that steel does not need to melt to cause structural failure. In fact, steel will lose about half of its yield strength, a third of its ultimate strength, and a quarter of its stiffness by 900 °F. This is well within the temperature range of jet fuel fires. Additionally, the thermal expansion caused by the fire can mess up welds and fasteners, further compromising the structural integrity.
While jet fuel fires may not always burn hot enough to melt steel, they can significantly weaken it and cause it to give way, especially when combined with other factors such as the weight of the structure and the impact of a collision. For example, in the case of the World Trade Center towers, the impact of the planes alone loosened steel trusses and removed structural support. The subsequent jet fuel fire further weakened the steel, causing it to yield and leading to the collapse of the buildings.
It is important to note that jet fuel is similar to diesel fuel and is, in fact, closer to diesel than to aviation fuel. Diesel fuel also has a lower vapor pressure than gasoline, making it less volatile and easier to transport. Therefore, the principles discussed above regarding jet fuel and steel apply equally to diesel fuel.
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Diesel fuel was present in World Trade Center Building 7
The collapse of World Trade Center Building 7 (WTC 7) on September 11, 2001, has been a subject of much debate and investigation. While there are various factors that could have contributed to its collapse, one theory that has been explored is the presence of diesel fuel in the building.
WTC 7 was a 47-story steel high-rise building that stood at 610 feet. It was part of the downtown complex that included the Twin Towers. After the collapse of the Twin Towers, WTC 7 was damaged and set ablaze by falling debris. It continued to burn for about seven hours before it completely collapsed into its own footprint in freefall.
The presence of diesel fuel in WTC 7 has been a subject of investigation by engineers and scientists trying to explain the building's collapse. There were thousands of gallons of diesel fuel stored in tanks inside the building, intended to run electricity generators in a power failure. One tank, holding 6,000 gallons of fuel, was located on the 23rd floor to provide power to the command bunker. Additionally, there were four tanks holding up to 36,000 gallons of fuel below ground on the southwest side of the building.
Some experts believe that the diesel fuel could have contributed to the intensity and duration of the fires in WTC 7. Dr. Barnett, part of an assessment team examining the performance of buildings during the attacks, stated that if the enclosures surrounding the diesel tanks were damaged, the fuel could have played a significant role in the collapse. Other experts, like Silvian Marcus, a structural engineer involved in the original design of the building, agree that the diesel fuel could have accelerated the collapse but may not have been the sole cause.
However, it is important to note that the National Institute of Standards and Technology (NIST) ruled out the diesel fuel hypothesis. They cited the lack of video evidence of thick black smoke characteristic of hydrocarbon fires, indicating that the fire was not fueled by a flammable or combustible liquid like diesel fuel.
While the presence of diesel fuel in WTC 7 has been a subject of discussion, it is just one factor among many that contributed to the building's collapse. The official narrative concluded that the collapse was primarily due to normal office fuel loads and the extensive damage and fires caused by the falling debris from the Twin Towers.
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Diesel is easier to store, transport, and source than other fuels
Diesel fuel is easier to store, transport, and source than other fuels. Firstly, diesel can be stored for longer periods than gasoline without losing strength, making it ideal for long-term storage and emergency situations. Its lower vapour pressure also makes it less volatile and safer to handle during transportation.
Diesel fuel offers a wide range of performance, efficiency, and safety features, making it a popular choice for various vehicles and equipment. Diesel engines are commonly found in trucks, trains, boats, barges, public buses, and school buses. They are also used in most construction, farming, and military vehicles and equipment, such as machinery for lifting steel beams, digging foundations, drilling wells, paving roads, and moving soil and rocks.
The versatility of diesel fuel is further enhanced by its ability to be sourced from various raw materials. While petroleum-derived diesel, also known as petrodiesel, is the most common type, alternative sources such as biodiesel, biomass-to-liquid (BTL), gas-to-liquid (GTL) diesel, and renewable diesel are gaining traction. These alternatives provide options for more sustainable and environmentally friendly fuel sources.
Additionally, diesel fuel contains more energy per litre than petrol, resulting in higher fuel efficiency and lower CO2 emissions. The diesel engine's combustion process is more efficient, and a diesel engine can be up to 40% more efficient than a spark-ignited petrol engine with the same power output. This efficiency contributes to cost savings and a reduced environmental impact.
In summary, diesel fuel's ease of storage, transportation, and sourcing, coupled with its high energy density and efficiency, make it a preferred choice for various industries and applications. Its versatility and performance advantages contribute to its widespread adoption, particularly in sectors requiring demanding and reliable power solutions.
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Frequently asked questions
No, diesel fuel cannot melt steel. Steel melts at a temperature of around 2750°F (1500°C), and diesel fuel does not burn hot enough to reach this temperature.
Diesel fuel burns at a temperature between 800°F and 1500°F, which is not hot enough to melt steel.
Jet fuel burns at a similar temperature to diesel and therefore cannot melt steel. However, jet fuel can significantly weaken steel, reducing its yield strength, ultimate strength, and stiffness.
Steel melts at a temperature of around 2750°F (1500°C). At this temperature, the steel becomes like putty and cannot support any weight.
