a picture showing 600D ARAMID FIVER VS 1500D ARAMID FIBER

Choosing Aramid Fiber: 1500D vs 600D for Phone Cases

When protecting your beloved smartphone, one of the most important factors is what is the material. One material that has been making waves in the industry is aramid fiber. Aramid fiber has become a top choice for those seeking top-notch phone protection because it is renowned for its impressive strength, heat resistance, and durability.

Aramid Fiber: The Power Behind Premium Phone Cases


Aramid fiber, often called the superhero of synthetic fibers, is well-known for its exceptional qualities. It's all in the chemical structure. Aramid, "aromatic polyamide," comprises long chains of polyamide molecules held together by strong hydrogen bonds. This unique composition results in some key features that make it a prime candidate for phone case manufacturing:

  1. High Strength: Aramid fibers are robust, offering robust protection for your phone. They resist stretching or breaking, even when faced with forceful impacts.
  2. Heat Resistance: Aramid fibers can withstand high temperatures without melting or deteriorating. This property ensures that your phone stays safe under various conditions.
  3. Lightweight: Despite their exceptional strength, aramid fibers are relatively light. This feature is great news for those who want protection without adding bulk to their sleek smartphones.
  4. Low Electrical Conductivity: Aramid fibers are electrically non-conductive, perfect for phone cases requiring electrical insulation.
  5. Chemical Resistance: Aramid fibers are tough against many chemicals, making them ideal for use in diverse and sometimes harsh environments.
  6. Low Creep: These fibers show minimal creep, which means they don't elongate over time when subjected to a constant load.

Now, let's dive into the heart of the matter - the difference between 1500D and 600D aramid fiber, mainly when used in phone cases.

What does the D mean?


D in 600D and 1500D stands for Denier, measuring fiber thickness.

Denier is a unit of linear density used for fibers, similar to how grams per meter measure fabric weight.

We mainly apply Denier to synthetic fibers like nylon, polyester, and aramid (e.g., Kevlar).

Higher D (1500) means thicker, heavier, more durable material. Lower D (600) means thinner, lighter, more flexible material.

One important note: As a phone case manufacturer, Thinborne, using 600D aramid fiber is 30% more expensive than 1500D, owing to material costs and manufacturing complexity.

1500D Aramid Fiber: The Heavy-Duty Choice

  • Strength and Durability: Phone cases with 1500D aramid fiber offer exceptional strength and durability. They provide robust protection against drops and impacts.
  • Thickness and Weight: These cases are thicker and heavier due to the higher denier count, giving your phone a premium, heavy-duty feel.

600D Aramid Fiber: The Balanced Choice for Phone Cases, but much thinner and more expensive

  • Strength and Flexibility: Phone cases made with 600D aramid fiber offer a balance of strength and flexibility. They are strong enough to protect your phone while remaining lightweight and flexible.
  • Thickness and Weight: These cases are lighter and more flexible, making them ideal for those who want protection without adding much bulk to their phone.

The Premium Choice for Your Phone Case: 600D Aramid Fiber

a man crafting 600d aramid fiber fabric

Compared to 1500D aramid fiber,  600D aramid fiber has thinner, finer weave and textures while it may be a bit more expensive and more complex to craft, the advantages are crystal clear:

  1. Better Clear Texture: 600D aramid fiber phone cases offer a visually appealing clear texture that's stylish and practical.
  2. Slim and Lightweight: They maintain a slim profile and lightweight build while providing excellent phone protection.
  3. Flexibility: 600D cases flex with the contours of your phone, providing an ergonomic feel and a better grip.


In the world of slim phone protection, aramid fiber is undoubtedly a superhero. When choosing between 1500D and 600D for your aramid fiber phone case, it's clear that 600D takes the crown. The premium choice offers a blend of strength, style, and slimness, ensuring your phone remains safe and stylish. So, 

when you're in the market for a new slim and stylish aramid fiber phone case, consider 600D aramid fiber over 1500D– a premium choice for your premium device.

600D Aramid Fiber Cases


1. What is aramid fiber, and why is it used in phone cases?

  • Aramid fiber is a synthetic material known for its exceptional strength and durability. It's used in phone cases to provide superior protection against drops and impacts while remaining lightweight.

2. What's the difference between 1500D and 600D aramid fiber in phone cases?

  • Compared to 1500D aramid fiber, 600D aramid fiber has thinner, finer weave and textures while it may be a bit more expensive and more complex to craft

3. Are aramid fiber phone cases more expensive than other materials?

  • Aramid fiber phone cases can be more expensive due to their premium quality and craftsmanship.

4. Are aramid fiber phone cases more protective than traditional cases?

  • Aramid fiber phone cases are known for being unbelievably thin and light—a popular choice for those who prioritize ultra-slim cases.

5. Are aramid fiber phone cases compatible with wireless charging?

  • Yes, most aramid fiber phone cases are compatible with wireless charging, ensuring you can charge your phone conveniently without removing the case.

6. Do aramid fiber phone cases interfere with cell phone signal strength?

  • Aramid fiber phone cases do not typically interfere with cell phone signal strength. But carbon fiber does!

7. How do I clean and maintain an aramid fiber phone case?

  • Cleaning is usually straightforward. You can gently wipe the case with a damp cloth and mild soap. Avoid harsh chemicals or abrasive materials.

8. Are specific brands or manufacturers known for high-quality aramid fiber phone cases?

  • Yes, several reputable brands offer premium aramid fiber phone cases. You can try Thinborne.

9. What are the advantages of choosing 600D aramid fiber for a phone case?

  • 600D aramid fiber phone cases offer a balance of strength and slimness, a better clear texture, and an ergonomic grip. They are a premium choice for those looking for top-notch phone protection with style.

About the author

the author of the blog

Karl Liang

A son, a husband, a father.

I am A tech geek from Frisco, Texas, running Thinborne, a company offering super-thin aramid fiber cases. 

I share my passion and knowledge for all things tech with anyone who wants to listen!

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