How Much Is 100 Lbs Of Aluminum Worth

Ever walked into a local scrapyard, looked at a pile of old siding or a discarded engine part, and wondered if you were sitting on a small fortune? It’s a common thought. You see a heavy, dull-colored hunk of metal and think, "That's gotta be worth something.

But then you realize you don't actually know the value. You don't know if you're looking at a few dollars or a hundred.

If you have a pile of scrap sitting in your garage or a construction site, you're likely asking how much 100 lbs of aluminum is worth. Which means the answer isn't a single number. It's a moving target that shifts based on things you might not even think about, like the purity of the metal or the current state of the global economy.

What Is Aluminum Scrap Value

To understand the price, you have to understand that not all aluminum is created equal. In the recycling world, aluminum is categorized by how "clean" it is. If you try to sell a soda can mixed with a chunk of a car rim, you aren't going to get a great price.

The Concept of Purity

When a recycler looks at your 100 lbs of aluminum, they aren't seeing a single material. Now, if that material is "clean"—meaning it's just one type of alloy without paint, plastic, or steel attached—it's worth much more. Even so, they are seeing a potential raw material for a furnace. This is because the cost of separating those impurities out during the smelting process is high.

Alloys and Grades

Aluminum is rarely used in its pure form. Even so, it's almost always mixed with other elements like magnesium, silicon, or copper to give it specific properties—like strength or corrosion resistance. These mixtures are called alloys.

Some alloys are incredibly valuable because they are easy to melt and reuse. Others are a headache for recyclers because they contain trace amounts of other metals that are hard to strip away. This is why you'll see different price tiers at the scrap yard. You might see a price for "clean extrusions" and a much lower price for "mixed aluminum siding.

Why Aluminum Prices Fluctuate

You might check the price today and see one number, then check it next Tuesday and see something completely different. This isn't a mistake by the scrap yard; it's just how the market works.

Global Commodity Markets

Aluminum is a commodity, much like gold, oil, or wheat. If a massive smelter in Europe shuts down for maintenance, the supply drops, and the price per pound goes up. Also, if a new mining operation starts up in Australia, the supply increases, and prices might dip. Its value is determined by global supply and demand. You are essentially participating in a global market, even if you're just dropping off a bucket of scraps at a local yard.

Energy Costs

Here is something most people miss: aluminum production is incredibly energy-intensive. But it takes a massive amount of electricity to extract aluminum from bauxite ore. But because of this, the price of aluminum is often tied to the cost of electricity. When energy prices spike globally, the cost of producing new aluminum goes up, which can actually drive up the scrap value because recycled aluminum is much cheaper and easier to process than "virgin" aluminum.

Local Competition

The price you get at the counter depends on how many scrap yards are in your area. Day to day, if there is only one yard within a fifty-mile radius, they have the take advantage of. If there are five yards on the same street, they'll fight for your 100 lbs of aluminum by offering you a few cents more per pound.

How to Calculate Your Scrap Value

If you want to know what your haul is worth, you need to do a little bit of math. It’s not as complicated as it sounds, but you have to be precise.

The Basic Formula

The math is simple: Weight x Price per Pound = Total Value.

If you have 100 lbs of aluminum and the current market rate for your specific grade is $0.Think about it: it sounds easy, but the catch is always in the "Price per Pound" part. 70 per pound, you're looking at $70. You have to make sure you know which grade you have.

Determining Your Grade

Before you load up your truck, try to identify what you actually have. Here are the common ones you'll encounter:

• Extrusions: These are often used in window frames or architectural elements. They are usually high-quality and fetch a good price.
• Cast Aluminum: Think engine blocks or certain types of heavy machinery parts. These are often more complex alloys.
• Foil and Cans: These are "light" scrap. They are very common, but because they are often dirty or mixed with food residue, they usually command the lowest price per pound.
• Siding and Gutters: This is common in residential construction. It's often a specific type of alloy that recyclers look for.

Weighing Your Load

Don't guess the weight. If you have a significant amount, try to use a heavy-duty scale. Most scrap yards will weigh your material on their own industrial scales, but knowing your approximate weight beforehand helps you know if the trip is even worth the gas money.

For more on this topic, read our article on how many litres is 6 gallons or check out how many quarts in 4 gallons.

Common Mistakes When Selling Aluminum

I've seen people walk into a scrap yard with a truck full of metal and walk out with a handful of change. Usually, it's because they made one of these mistakes.

Mixing Metals

This is the biggest one. So " Steel is worth significantly less than aluminum. If you have 100 lbs of aluminum, but 20 lbs of it is actually steel (which is magnetic), the recycler will often treat the entire pile as "mixed scrap.If you take the time to separate the non-aluminum metals, you'll almost always make more money.

Leaving Contaminants

If your aluminum is covered in thick layers of paint, plastic coatings, or heavy grease, it's harder to process. Here's the thing — many yards will "deduct" weight or lower the price to account for the extra work required to clean it. If you can't clean it, at least make sure it's as bare as possible.

Not Checking Local Prices First

Don't just drive to the first yard you see. Prices vary wildly. A quick phone call to two or three local yards can save you a significant amount of money, especially if you are moving large quantities.

Practical Tips for Maximum Profit

If you want to turn that 100 lbs of aluminum into the most cash possible, follow these steps.

Sort It by Type

It takes more time upfront, but it pays off. And if you have window extrusions in one pile and old soda cans in another, keep them separate. When you present a "clean" load of a specific grade, the yard can give you the premium price immediately rather than downgrading your whole pile.

Clean the Metal

You don't need to polish it to a mirror shine, but getting rid of heavy grease, dirt, or attached plastic parts is vital. The cleaner the metal, the higher the grade, and the better the payout.

Check the Magnet Test

At its core, a pro tip: grab a small magnet. Aluminum is non-magnetic. If you touch your magnet to a piece of metal and it sticks, it's not aluminum—it's likely steel or iron. Testing your pile before you leave ensures you aren't surprised by a lower price when you get to the scale.

Keep an Eye on Trends

While you don't need to be a Wall Street analyst, knowing if metal prices are trending up or down can help you decide whether to sell now or wait a few months.

FAQ

Does the color of aluminum affect the price?

Generally, no. The color is usually due to paint or anodizing. That said, if the color comes from a heavy coating of paint or plastic, it will lower the value because it's considered a contaminant.

Will scrap yards buy small amounts of aluminum?

Most will, but if you only have a few pounds, the trip might not be worth the time or fuel. Most people find it more profitable to wait until they have a significant weight, like 50 or 100 lbs.

Is aluminum a good investment for scrap?

It can be, but it's volatile. Unlike gold, which is a store of value

Unlike gold, which is a store of value, aluminum is a commodity, meaning its price fluctuates based on supply, demand, and global market conditions. That said, it is far more accessible than most precious metals, making it an excellent entry point for beginners looking to learn about the scrap market.

How Often Should I Sell?

This depends on your goals. If you are collecting aluminum as a side hustle, selling in bulk once you hit a comfortable weight—say, 100 lbs or more—will save you multiple trips and maximize your per-trip earnings. If you are simply cleaning out your garage, there is no harm in selling a smaller batch whenever it feels convenient.

Can I Mix Aluminum with Other Metals?

You can, but you should expect a lower payout. Scrap yards grade metals individually, and mixing them together usually results in the entire lot being priced at the lowest value present. If you have the time to separate your metals, the difference in payout is almost always worth the extra effort.

Final Thoughts

Selling scrap aluminum is one of the simplest ways to turn discarded materials into extra income. By understanding how yards price aluminum, keeping your metal clean, and staying aware of market trends, you can consistently get the best return on every pound you bring in. It requires minimal upfront investment—just a scale, a magnet, and a willingness to sort. Start small, build your system, and over time, those piles of old window frames and soda cans will add up to real money.