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Writer's pictureRio Gutierrez

A Guide to CNC Plasma Cutting Materials for Beginners

If you're new to CNC plasma cutting, welcome to the world where precision meets power – and sparks fly! A CNC plasma cutter is a game-changer for any metalworking hobbyist, fabricator, or business looking to cut through metal like butter.


But before you go all “cutting-edge,” it's very important to understand what materials work best with your CNC plasma cutting machine. Here at FastCut CNC, we know that choosing the right materials can make all the difference in your projects--from “meh” to “magnificent!”.


So grab your goggles, and let’s dive into the essentials to help you unleash the full potential of your machine!


What’s a CNC Plasma Cutter?

A CNC plasma cutter is a cool tool that uses a plasma torch, all managed by a computer, to cut through different types of metal.


So, what’s plasma? It’s a superheated gas that can slice through conductive materials—making it perfect for metals like steel, aluminum, and copper.


Plus, with a CNC cutting table, you get these precise and repeatable cuts, which is awesome for everything--from any of your custom projects to even large-scale manufacturing!


Common Materials for CNC Plasma Cutting

Whether you're new to CNC plasma cutting or have been at it for a while, picking the right material is most important. Sure, some metals are a breeze to cut, while others–well, can be tough on your CNC plasma cutting machine.


Mild Steel

Low-carbon steel, some call it the go-to material for CNC plasma cutting. Why? Well, it’s super affordable, easy to find, and perfect if you're just starting out. Cutting through it gives you those clean, precise edges, plus it handles the heat like a champ!


Common Uses

  • Automotive parts

  • Construction projects

  • Custom metalwork


Definitely your best friend!


Aluminum 

Now if you're after a metal that's both light and strong, aluminum is the way to go! Just a heads up, though—cutting aluminum takes a bit of skill. You'll want to adjust your settings here since it conducts heat much faster than steel. And if you're not careful, it can affect the quality of your cut. 


Advantages: 

  • Lightweight but strong 

  • Corrosion-resistant 

  • Perfect for outdoor projects 


Common Uses: 

  • Automotive body panels 

  • Aerospace parts 

  • Outdoor furniture


Stainless Steel 

Great choice for projects that need both durability and style. It's also tough against corrosion, but keep in mind that cutting it can be a bit tricky since it holds onto heat and can warp readily. 


Advantages: 

  • Rust-resistant 

  • Long-lasting 

  • Sleek finish 


Common Uses: 

  • Kitchen appliances 

  • Medical instruments 

  • Architectural projects 


Say you’re upgrading your kitchen or perhaps working on a cool architectural design, stainless steel might just be the perfect fit!


Copper and Brass

You might not hear about copper and brass as much as steel and aluminum, but they can be cut with a CNC plasma cutter! Note that these metals are superconductive, which can make them a bit tricky to work with, but they look fantastic and are perfect for decorative projects.


Advantages:

  • Great conductivity

  • Stunning finish

  • Ideal for artistic creations


Common Uses:

  • Electrical components

  • Art and decor

  • Plumbing fixtures



Material Thickness Capabilities for CNC Plasma Cutters

Not all CNC plasma cutting machines are created equal—some are like the tortoises of the cutting world while others are the hares! The thickness of the material you can cut depends on your machine's power.


Here’s a little guideline based on plasma cutter amperage:

  • 30–40 amps: Perfect for materials up to 1/4 inch thick—great for hobbyists and those DIY projects that never quite leave the garage!

  • 40–60 amps: Handles materials up to 1/2 inch thick—ideal for small businesses.

  • 60+ amps: Cuts through materials thicker than 1/2 inch, including tough industrial-grade steel—this is where the professionals play!


And remember, while you could use a lower-powered machine to tackle thicker materials, you might end up with cuts that look like they were done by a toddler with scissors. So make sure to choose a plasma cutter that fits your project needs like a glove.


And if you’re unsure where to start, look for the best CNC plasma cutter that strikes the perfect balance between power, precision, and price.


Where to Find Materials for CNC Plasma Cutting 


Online Metal Suppliers

One of the easiest ways to check out.


Online Metals – They have a great selection of materials like aluminum, copper, stainless steel, and mild steel. Plus, they also sell in small quantities, which is perfect if you're a hobbyist.


Metal Supermarkets – With locations all over and online ordering, Metal Supermarkets has a fantastic variety of metals in different shapes and sizes.In fact, we just sold one of our high-quality CNC plasma tables to Metal Supermarkets, who chose our product for its precision, durability, and exceptional performance in cutting even the toughest materials.


Industrial Metal Supply – They're known for bulk quantities, but don't worry if you’re just an individual or a small business; they’ve got you covered too!


Local Scrap Yards 

Now if you’re on the hunt for budget-friendly materials, scrap yards are definitely like treasure troves! You can often score discarded but still usable steel, aluminum, and some other metals for a fraction of the price. Plus, repurposing scrap metal is also a great way to be kind to the environment! 


Pro Tip: Before you make a purchase, take a sec to check the grade of the metal. You want to ensure it’s the right fit for your project. Remember, a plasma cutter works best when the material matches what it can cut!


Local Metal Suppliers 

Last but not least--they usually have a great selection of sheet metal, steel tubing, and more. Plus, many of them also offer custom cutting services, which is super handy if you can't cut down large pieces yourself!



FYI: Material Grades For Your CNC Plasma Cutting Machine

Getting to know the type and grade of material you’re working with is important for making good cuts.


Mild Steel Grades (A36, A1011, etc.): Make sure to pick the right grade based on how strong and thick you need it to be.


Aluminum Grades (5052, 6061, etc.): Each grade offers different levels of strength, corrosion resistance, and formability, so choose wisely!


Stainless Steel Grades (304, 316, etc.): Higher grades like 316 are great for resisting corrosion, but keep in mind they're a bit tougher to cut.


Keep in mind that using the right grade is key to ensuring your CNC plasma cutting machine delivers those clean, precise cuts every time!


Let’s Cut to the Chase!

Ready to kick off your CNC plasma cutting journey or take it to the next level?


FastCut CNC has your back! We offer some of the best CNC plasma cutters out there, designed to give you precision, power, and reliability with every cut. Mild steel? Aluminum? Stainless steel? Our machines are built to handle it all!


Still not sure which machine is right for you?


Reach Out to Us Today. Let us help you find that perfect CNC cutting table to fit your needs!

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