Skip to main content Skip to footer 
When you think of diamond blades, words like “tough,” “precise,” and “durable” probably come to mind. But have you ever wondered what makes them so powerful? The secret lies in two key components: the diamond particles embedded in the blade, and the core material that supports them.
In this guide, we’ll break down the science behind these two materials in a friendly, easy-to-understand way—helping you better appreciate what’s behind every great cut, especially when it’s from Johnson Tools.
What Exactly is Diamond?
Diamond, also known as “industrial diamond” in the cutting tool industry, is a form of carbon arranged in a crystal structure. It’s the hardest naturally occurring material known to man.
Diamonds used in tools aren’t the same as gemstones. Instead, they are synthetically produced for optimal performance in cutting, grinding, or drilling.
💡 Fun Fact:
One carat equals 0.2 grams, but in tooling, we measure diamonds by micron size or mesh (grit size) depending on their usage.
Choosing the Right Diamond Grit & Strength
Not all diamond particles are equal. Two key aspects affect tool performance:
- Grit Size: Refers to how fine or coarse the diamond particles are.
- Coarser grits = faster cutting
- Finer grits = smoother finish
- Diamond Strength: This determines how easily a crystal will fracture.
- Too strong? It becomes dull.
- Too weak? It breaks easily.
💡 For general cutting blades, the ideal strength falls between 130–140N.
What is a Blade Core?
The core is the steel body that holds diamond segments. It affects vibration, precision, and durability.
There are two common types of blade cores:
| Welding Type | Typical Core Materials | Usage |
|---|---|---|
| Laser Welded | 30CrMo, 50Mn2V | Heavy-duty concrete cutting |
| Silver Brazed | 75Cr1, 65Mn | Tile, ceramics, dry cutting |
Blades made by Johnson Tools use high-performance materials for each welding method, ensuring the right balance of flexibility and rigidity.
Real-World Examples
- Laser Welded Blades with 50Mn2V cores are widely used in road construction for cutting reinforced concrete.
- Silver Brazed Blades with 75Cr1 are ideal for cutting tiles or granite in interior decoration.
These material combinations ensure optimal results across applications.
Visual Learning Tip: 🔍
Consider using a simple infographic showing:
- Cross-section of a diamond segment
- Stress points on a blade during cutting
- Core materials and their welding types
This helps in grasping technical differences more intuitively.
FAQ
Q: Are synthetic diamonds better than natural ones for cutting tools?
A: Yes. Synthetic diamonds are more uniform and tailored for performance.
Q: What happens if I choose the wrong core material?
A: You may experience vibration, fast wear, or even blade failure.
Q: Can I use the same blade for granite and concrete?
A: It’s not recommended. Use the blade designed for your specific material.
Conclusion
Understanding diamond grit, strength, and core materials gives you a deeper appreciation of your blade’s engineering. Whether you’re a distributor or an end user, choosing the right materials ensures better performance and safety.
Ready to upgrade your cutting tools? Visit Johnson Tools or contact our experts for tailored advice and premium solutions.
