How Hard is AR500 Steel?

How Hard is AR500 Steel?

Are you curious about the durability and strength of AR500 steel used in body armor plates? Look no further! In this comprehensive guide from PivotalBodyArmor, we'll dive deep into the properties of AR500 steel and what makes it an excellent choice for personal protection.

What is AR500 Steel?

AR500 steel is a specialized type of high-strength, abrasion-resistant steel commonly used in the production of body armor plates. Its unique properties make it an ideal material for personal protection gear.

AR500 steel is known for its exceptional hardness, typically measured between 500 and 600 on the Brinell hardness scale. This hardness level allows AR500 steel plates to effectively stop and disperse the energy of incoming projectiles, providing reliable protection for the wearer.

The Brinell Hardness Test

To understand the hardness of AR500 steel, it's essential to know how it's measured. The Brinell hardness test is the most common method used to determine the hardness of metals, including steel.

During the Brinell test, a hard, spherical indenter is pressed into the material's surface under a specific load. The diameter of the resulting indentation is then measured, and the Brinell hardness number (BHN) is calculated using a formula that takes into account the applied load, indenter diameter, and indentation size.

Brinell Hardness Number (BHN) Material
100-200 Mild steel
200-300 Medium-carbon steel
300-400 High-carbon steel
400-500 Tool steel
500-600 AR500 steel

As you can see, AR500 steel ranks among the hardest steels available, making it an excellent choice for body armor applications.

Choosing the Right Body Armor

When selecting body armor, it's crucial to consider the level of protection you need based on potential threats. The National Institute of Justice (NIJ) standards classify body armor into different levels, each designed to protect against specific types of ammunition.

At PivotalBodyArmor, we offer a wide range of soft body armor and plates & inserts to suit your personal protection needs. Our AR500 steel plates are available in various NIJ levels, ensuring you can find the right balance between protection and mobility.

The Benefits of AR500 Steel Plates


AR500 steel plates are known for their exceptional durability. The high hardness of the material allows it to withstand multiple hits without compromising its structural integrity. This means you can rely on your AR500 steel plates to provide consistent protection, even in demanding situations.

Multi-Hit Capability

In contrast to some other materials used in body armor, such as ceramic plates, AR500 steel plates offer excellent multi-hit capability. This means that even after taking a hit, the plate can continue to provide protection against subsequent shots.


While AR500 steel plates offer superior protection, they are also more cost-effective compared to other high-end body armor materials. This makes AR500 steel an attractive option for those looking to balance protection and budget.

Proper Care and Maintenance

To ensure your AR500 steel plates continue to provide optimal protection, it's essential to follow proper care and maintenance guidelines:

  1. Store your plates in a cool, dry place away from direct sunlight.
  2. Avoid exposing your plates to harsh chemicals or abrasive materials.
  3. Regularly inspect your plates for any signs of damage or wear.
  4. Replace your plates if they have been compromised or have reached the end of their service life.

By taking care of your AR500 steel plates, you can extend their lifespan and ensure they're ready to protect you when needed.

Frequently Asked Questions

How long do AR500 steel plates last?

With proper care and maintenance, AR500 steel plates can last for many years. However, it's essential to follow the manufacturer's guidelines and replace your plates if they have been compromised or have reached the end of their service life.

Can AR500 steel plates stop rifle rounds?

Yes, AR500 steel plates rated at NIJ Level III or higher are designed to stop rifle rounds. However, it's crucial to choose the appropriate level of protection based on the specific threats you may face.

Are AR500 steel plates heavy?

AR500 steel plates are generally heavier than other body armor materials, such as ceramic or polyethylene plates. However, the weight is often considered a worthy trade-off for the exceptional protection and durability provided by AR500 steel.

Trust PivotalBodyArmor for Your Protection

At PivotalBodyArmor, we are dedicated to providing high-quality personal protection gear to keep you safe in any situation. Our range of AR500 steel plates and other body armor products are rigorously tested to ensure they meet the highest standards of performance and reliability.

Whether you're in law enforcement, military, or simply a concerned citizen, you can trust PivotalBodyArmor to provide the protection you need. Browse our selection of Caliber Armor soft body armor and other top-quality products today, and invest in your safety and peace of mind.

Remember, when it comes to personal protection, choosing the right gear can make all the difference. With PivotalBodyArmor and our range of AR500 steel plates, you can be confident that you're getting the best possible protection for your needs.

Don't wait until it's too late – explore our collection of AR500 steel plates and other personal protection gear today, and take the first step towards ensuring your safety and well-being.

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