You’re not the only one who has sold scrap metal and puzzled why two loads with the same weight were paid so differently. A lot of vendors think that scrap value is easy: the greater weight, the more money. There are a number of important things that affect the price of scrap, and weight is just one of them.
To really know how much your scrap is worth and how to get the most money for it, you need to look at three primary things: its weight, the sort of metal it is, and its quality. Let’s look at each one in a manner that makes sense, particularly when it comes to the Melbourne scrap market.
1. Weight: Important, But Not the Whole Story

Most sellers consider about weight first, and that’s for a good reason. Most of the time, scrap metal is valued by the kilogram or tonne. This means that the more metal you have, the more money you might make.
But weight alone doesn’t tell you how much anything is worth.
A tonne of scrap steel doesn’t bring in as much money as a tonne of copper or aluminum. Weight may be deceiving even within the same kind of metal if the substance is jumbled or dirty.
Why weight might be misleading:
- Metals that aren’t worth much may add weight without costing much.
- Dirt, rubber, plastic, or moisture make things heavier yet lower their grade.
- People usually pay less for mixed scrap.
- In the end, weight counts, but only when it is with the correct kind and grade of metal.
2. Metal Type: The Biggest Price Driver
The type of metal you’re selling has the strongest influence on how much you’ll be paid. Scrap metals are generally divided into two broad categories:
Ferrous Metals
These contain iron and are usually magnetic.
Examples include:
- Mild steel
- Cast iron
- Structural steel
Ferrous metals are common and widely available, which means they are usually priced lower per kilo.
Non-Ferrous Metals
These do not contain iron and are non-magnetic.
Examples include:
- Copper
- Aluminium
- Brass
- Stainless steel
Non-ferrous metals are more valuable because they are harder to source, easier to recycle repeatedly, and in higher demand for manufacturing.
Why metal type affects cost so much:
Copper and brass are in high demand globally
Aluminium is lightweight but valuable due to recycling efficiency
Steel is abundant, so prices stay comparatively lower
Key takeaway: A small amount of high-value metal can outperform a large quantity of low-value scrap.
3. Quality: Where Many Sellers Lose Money
Quality is the most important thing to think about when setting scrap prices, and it’s also one of the quickest ways to lose money without knowing it.
When the metal gets to the yard, scrap quality means how clean, pure, and well-prepared it is.
Factors that reduce quality:
Mixed metals
Attached plastic, rubber, or wood
Paint, oil, or heavy corrosion
Insulation left on wires
When scrap is low quality, yards have to spend extra time and money processing it. That cost is passed back to the seller through lower pricing.
High-quality scrap usually means:
Metals separated by type
Minimal contamination
Clean cuts and manageable sizes
Better quality = better grade = higher payout.
How These Three Factors Work Together
There isn’t just one thing that determines scrap value; it’s the mix that counts.
For instance:
- A hefty consignment of mixed steel may not make as much money as planned
- A little amount of clean copper may give you an unexpectedly big return
- Well-sorted aluminum may make a lot more money than jumbled junk.
Understanding how weight, type, and quality interact helps you predict your payout before you even reach the scale.
Common Mistakes That Reduce Scrap Value
Many sellers unknowingly reduce their earnings by making avoidable mistakes, such as:
- Putting ferrous and non-ferrous metals together
- Only paying attention to weight and not value
- Selling junk that is unclean or has germs on it
- Not inquiring how their work is rated
Each of these may discreetly lower the amount you owe.
Simple Ways to Increase Scrap Value
If you want better payouts, small changes can make a big difference:
Separate metals before visiting the yard
Remove non-metal attachments where possible
Keep high-value metals stored until prices improve
Learn basic metal categories and grades
Compare prices between yards when possible
These habits take little effort but can noticeably improve returns over time.
Final Thoughts
The price of scrap metal isn’t random, and it’s not only based on how much metal you bring in. How much you are paid depends a lot on the weight, kind of metal, and quality. Sellers who know this triad always make more money than those who don’t.
You can manage the value of your scrap by paying attention to what you’re selling and how you’re selling it, instead of leaving money on the table.
Phone: 03 9088 0299
Email: sgsmetalalloys@gmail.com