When working with nichrome wire, one of the most common concerns is whether it rusts or corrodes over time, especially when exposed to heat, moisture, or air. Since nichrome is widely used in heating elements, foam cutting, and high-temperature applications, its resistance to oxidation is a critical factor in determining its longevity and performance.
In this guide, we’ll answer the question: Does nichrome wire rust?
We’ll also explore oxidation, heat resistance, and how to maximise the lifespan of nichrome wire in different conditions.

What is Nichrome Wire?
Nichrome is an alloy of nickel and chromium, sometimes with small amounts of iron or other metals, depending on the grade. The most common nichrome compositions are:
Nichrome wire is known for its:
✔ High heat resistance – Can withstand extreme temperatures.
✔ Electrical resistivity – Makes it ideal for heating elements.
✔ Corrosion and oxidation resistance – Does not rust like iron or steel.
✔ Long lifespan – More durable than standard metal wires in heat applications.



Does Nichrome Wire Rust?
The short answer is no, nichrome wire does not rust in the same way that iron or steel does.
Rusting occurs when iron reacts with oxygen and moisture, forming iron oxide (Fe₂O₃), commonly known as rust.
Since nichrome contains little to no iron, it does not undergo the same red-orange rusting process. However, oxidation can still occur, but in a different way.
Understanding Oxidation in Nichrome Wire
What is Oxidation?
Oxidation is a chemical reaction where a metal reacts with oxygen in the air, forming a thin surface layer of oxide. Unlike rust, this oxidation protects the nichrome wire instead of degrading it.
Nichrome wire forms a chromium oxide (Cr₂O₃) layer, which:
- Acts as a protective barrier against further corrosion.
- Improves heat resistance by stabilising the wire’s surface.
- Prevents further oxidation after an initial burn-in period.
This is why nichrome wires last longer in high-heat environments compared to other metals.

How Does Heat Affect Nichrome Wire?
Nichrome wire is designed to handle high temperatures, often exceeding 1,000°C. However, extended exposure to heat causes some surface oxidation, which is normal and beneficial.
Temperature Range | Effect on Nichrome Wire |
---|---|
Up to 600°C | Minimal oxidation, wire remains bright. |
600°C – 1,000°C | Thin chromium oxide layer forms, protecting the wire. |
Above 1,000°C | Increased surface scaling, but wire remains functional. |
In applications like heating elements, this oxide layer actually helps stabilise the performance of the wire over time.
How to Prevent Nichrome Wire from Degrading
While nichrome wire does not rust, oxidation buildup over time can reduce efficiency. Here’s how to extend its lifespan:
1. Perform an Initial Burn-In
- Before using nichrome wire in heating applications, let it heat up gradually to develop a stable oxide layer.
- This helps prevent sudden degradation during later use.
2. Keep It Dry When Not in Use
- Although nichrome resists moisture, long-term exposure to humidity can lead to surface dulling.
- Store wire in dry conditions, preferably in a sealed container.
3. Avoid Mechanical Stress
- Excessive bending or stretching can damage the protective oxide layer.
- Keep wire handling to a minimum once installed.
4. Use Nichrome in Controlled Environments
- In industrial or DIY settings, avoid exposing nichrome wire to strong acids or chemicals that could erode its surface.
Nichrome Wire vs Other Metals: Corrosion & Heat Resistance
Metal Type | Rust Resistance | Oxidation Resistance | Heat Resistance | Best Used For |
---|---|---|---|---|
Nichrome | ✅ Won’t rust | ✅ Forms protective oxide layer | 🔥 Up to 1,200°C | Heating elements, foam cutters |
Stainless Steel | ✅ Won’t rust | ❌ Can corrode in high heat | 🔥 Up to 900°C | Kitchen appliances, construction |
Iron/Steel | ❌ Rusts easily | ❌ No oxidation protection | 🔥 Up to 800°C | Structural applications |
Copper | ❌ No rust, but oxidises green | ✅ Some oxidation resistance | 🔥 Up to 1,000°C | Electrical wiring |
Nichrome wire outperforms stainless steel, iron, and copper in high-heat applications, making it the preferred choice for resistance heating.
Best Applications for Nichrome Wire
Nichrome’s heat-resistant and corrosion-resistant properties make it ideal for:
Application | Why Nichrome Wire? |
---|---|
Heating Elements | High-temperature durability in ovens, toasters, and heaters. |
Foam Cutting | Thin nichrome wire easily cuts polystyrene and foam. |
Kilns & Industrial Furnaces | Withstands prolonged exposure to extreme heat. |
Laboratory & Scientific Use | Used in resistors, thermocouples, and other electrical applications. |
DIY & Art Projects | Common in custom heating setups and sculptures. |
If you’re working on high-temperature applications, our Nichrome Ni80 and Ni60 wires are perfect for long-term performance.
Why Buy Nichrome Wire from The Crazy Wire Company?
At The Crazy Wire Company, we offer premium-quality Ni80 and Ni60 nichrome wire, perfect for resistance heating, crafting, and industrial applications.
✔ High-Quality Nichrome – Available in multiple diameters and resistances.
✔ Immediate Dispatch – Shipped from our Warrington warehouse.
✔ Competitive Prices – Affordable and reliable nichrome wire for any project.
✔ Expert Advice – Need guidance? Our team is here to help.
Browse our nichrome wire collection today and find the perfect wire for your needs!
Conclusion: Nichrome Wire is Rust-Resistant and Built for Heat
To summarise:
- Nichrome wire does not rust because it lacks iron.
- Instead, it oxidises, forming a protective chromium oxide layer.
- This oxidation enhances durability and allows nichrome wire to function at high temperatures.
- With proper handling and care, nichrome wire lasts longer than most other heating wires.
If you need a wire that resists corrosion, rust, and heat, nichrome is the ultimate solution.
Shop premium nichrome wire today at The Crazy Wire Company for fast UK delivery and expert support!
We offer also a massive range of stainless steel wire and nichrome wire through our store. Choose the wire that you want to work with and we’ll get spooling.
If you’re interested in learning more about wire, check out our other blog on Everything You Need to Know About Wires.
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