Circular saws have become a household name and are perhaps the most common power tools used today. They are extensively useful in small DIY home improvements, as well as professional-grade construction work. The circular saw blade includes a round hard metal plate that is fused with sharp teeth/tips on its edges and is designed to cut through a variety of materials such as wood, PVC, and other metals.
Circular saw blades are made from select materials of sufficient hardness depending on the material to be cut. That’s because for a circular saw to be effective, its core and teeth must be stronger than the material to be cut. But when we mention circular saw blades, what comes to mind is the DIY woodworking and deck upgrading tasks at the household, which is their most common use for DIYers and carpenters. And the question therefore is, what are wood saw blades made of? Most circular saw blades are made from three materials; namely:
- Chrome Vanadium steel (CV).
Sometimes the core of the blade and the teeth are made from two different composite materials, in which case, the teeth are made from hard metal (HM). But for chrome-vanadium steel circular saw blades, the blade and teeth are made of uniform material that is wear-resistant and reinforced with high-quality carbon steel with sufficient hardness for holding an edge over the material you are going to cut.
Manufacturers of circular saw blades use a core hard metal (such as steel or diamond), and then add alloy compounds such as chrome, vanadium, or carbides to ensure the saw blades are wear-resistant, corrosion-resistant, and have a long service life. The strongest material that can be used to make circular saw blades is Diamond. But for the regular saws, their manufacturing process involves hardening steel and electroplating (or galvanizing) it to improve its anti-wear properties.
As already alluded to earlier, it is vital to check with the manufacturer because the most important tool on a circular saw to make the cut is the blade, which can cut wood, PVC, masonry blocks, or concrete. That means you have to carefully consider the material of the blade every time you make a purchase. With that in mind, let’s look at the materials circular saw blades are made of.
Carbide-Tipped Circular Saw Blades
These types of circular saw blades are made from carbide, alongside another hard metal that reinforces it. The carbide is often denoted by the added metal compound. Carbide-tipped circular saw blades, for example, are made with carbide teeth that’s reinforced with other compounds that may include:
- Tungsten (manufacture of Tungsten carbide tipped blades) – this is a hard metal with a boiling point of 3400 degrees, high tensile strength at high temperature, and has a low vapor pressure. Tungsten carbide-tipped blades are made with a chrome-vanadium steel core and tipped with the carbide compound to withstand tear and wear. These blades are best suited to cutting non-ferrous metals, hardwoods, and plastic. Other applications include cutting plywood, softwood, copper, aluminum, and PVC.
- Stainless steel – most circular blades you encounter out there are made of high carbon steel stainless steel and reinforced with a carbide compound to minimize abrasion and improve their anti-wear properties. Usually, the core of the blade is made of hardened steel and the teeth are tipped with a carbide metal to withstand abrasion. High carbon steel saw blades are effective for multiple applications, which is further determined by the motor power of the saw.
Advantages of Carbide-Tipped Circular Saw Blades
- Do not heat up.
- Resistant to friction.
- Non-corrosive material.
Diamond-Tipped Circular Saw Blades
Diamond, being the hardest metal, is used to make cutting blades like abrasive welding blades. The core of the circular saw blade could be of any hard metal such as Tungsten or hardened steel, but the tip of the blade is reinforced with diamond, therefore giving the saw the ability to drill and slice through abrasive materials that include:
- Masonry blocks
Advantages of Diamond-Tipped Circular Saw Blades
- Diamond is non-corrosive
- Longer life
- Friction and scratch-resistant.
With regards to the manufacturing process of circular saw blades, different blades are made of a hard-core metal (like stainless steel) with reinforced tips and are also coated with different “anti-friction coating” material that also determines their quality and price. The anti-friction coating may be made of Teflon or from transition metal compounds such as chrome, vanadium, iridium, platinum, and titanium. The saw blade coating material performs three key functions, namely:
- Prevents rusting
- Minimizes wear and tear to give the blade long service life.
- Prevents the blade from overheating.
Metal Types That Circular Saw Blades Are Made Of
As already stated, the core and tip of the blade should be made from a material that’s much stronger than the material to be cut. Modern circular saw blades are made of hardened teeth/tips and fused with mild stainless steel, aluminum oxide, or chrome vanadium steel core. For metal cutting saw blades, manufacturers use abrasive material that can slice through metal.
Steel Types That Circular Saw Blades Are Made Of
There is a variety of steel grades that different manufacturers use to make circular saw blades. Others will fuse a specific grade of steel with an alloy to improve the quality of the blade. Overall, most circular saw blades are made of a high carbon steel alloy core that is fused with tungsten carbide teeth. The steel grade doesn’t have to be of high quality because the vital part on the blade is the carbide teeth. On the high end, the best circular saw blades are made of a high-grade stainless-steel core and, despite the cost, they have a long service life.
Since time immemorial, steel has been used to make tough tools. However, other materials can be used to make saw blades and be equally durable as stainless steel. And while steel remains the most reliable since the era of the smiths, tough materials like tungsten and titanium are used as alloys because of their wear-resistance and non-corrosive properties.
Other tough materials that can be used instead of steel include ceramics and carbides. That’s because they have exceptional scratch resistance and properties.
Factors to Consider When Choosing A Circular Saw Blade
Before we wrap up, let’s highlight key aspects to consider in a blade before purchasing a circular:
- Choose your circular saw blade according to the material you want to cut.
- Depending on the finish you are looking to achieve, select the ideal number of blade teeth and their reinforcement compound.
- Choose the best anti-friction coating to get long service life from your blade.
Frequently Asked Questions
Q: What kind of metal is a circular saw blade made out of?
A: Modern circular saw blades are made of carbide tips fused with mild stainless steel, aluminum oxide, or chrome vanadium steel core. For metal cutting saw blades, manufacturers use abrasive material designed to slice through metal.
Q: What material are saw blades made of?
A: Saw blades are made from a variety of stainless steel grades, and their tips are hardened with carbide, tungsten, or diamond.
Q: Are circular saw blades good for making knives?
A: If you are looking for good knives steel, circular saw blades are already quality steel and are hardened enough to hold an edge and can be used to make good knives.
Q: Are circular saw blades high carbon steel?
A: Yes. Circular saw blades are made of cores that comprise high-quality carbon steel, which is one of the cheapest and flexible too. This means it is less likely to break because of the tensile strength.
The Bottom Line
Different types of steel grades are used in the manufacture of circular saw blades. However, the material is determined by the type of saw blade and its application. From handheld blades and chop saw blades to circular saws blades, the material used in the core may be the same, but the teeth are reinforced with alloys to increase quality and hardness.