AR 400 Steel Vs. AR 500 Steel – What is the Difference?
Abrasion Resistant (AR) steel contains carbon and alloys that make it harder than other types of steel. They are also less formable and not as weather resistant. However, their hardness contribute to AR steel being the preferred product in industrial manufacturing, mining, and construction, where abrasion and wear-and-tear are common factors.
The numbers (i.e. 400 – 500) within the names of the different steels refer to the Brinell Hardness Number (BHN) – the material’s level of hardness. The Brinell scale measures the size of the indention (penetration) left when a steel ball is dropped on the surface of the plate. The deeper the penetration, the softer the steel.
What are AR 400 Steel Plates?
AR 400 is an abrasion resistant steel that has a hardness between 360 BHN and 440 BHN. It is normally used in instances where there is impact abrasion, because it is softer and less brittle than AR 500. AR 400 steel plates are also commonly used for truck body liners, bucket liners, quarries, etc.
What are AR 500 Steel Plates?
AR 500 is similar to AR 400, but 25% harder because it contains more carbon. The hardness range of AR 500 is between 470 BHN and 530 BHN, making it more brittle than AR 400. This contributes to AR 500 steel plates being used in shoots and conveyors, where there is more sliding abrasion. It is also used in ballistic armoring for personnel carriers, shooting ranges, and live fire training facilities.
ENDURA and ENDURA Dual Options
Titus Steel offers AR 500 and AR 600, as well as its signature product offering, ENDURA and ENDURA Dual. ENDURA and ENDURA Dual start off with a low hardness of 430 BHN, meaning they’re easier to bend, form, shape, or machine. But with impact, ENDURA and ENDURA DUAL work-harden up to 550-560 BHN.
ENDURA and ENDURA Dual are top choices in many industries because they are easy to process, weld, with low hydrogen rod, no pre or post heating, work harden, are competitively priced, and are extremely tough and abrasion resistant.
To learn more about our unique product offerings, including AR 500 steel plates, ENDURA and ENDURA Dual, contact us, your Wear & Impact Steel Specialists.
What are Grades of Steel?
Today, there are over 3,500 grades of steel. Grading is based on the chemical composition and mechanical characteristics, and the way the steel has been produced.
In order to differentiate between different types of steels and to ensure buyers are getting the same steel anywhere in the world, the World Steel Association, along with National Standard Associations (i.e. ASTM and ASME in North America), developed an international set of standards to grade different steels.
The Naming Process
When it comes to carbon steels, their numerical designations indicate the amount of carbon they contain. The names usually follow a variation of 10XX, where the XX refers directly to the amount of carbon. As an example, a 1045 steel has a nominal carbon of 0.45.
For steels with a particular physical property such a yield or tensile strength, or hardness, there is a qualifier in the name. Each governing body uses something a little different but everything is well publicized.
For example, ASTM uses a naming convention that typically begins with a letter, such as A 36, A 572 Grade 50, A 514, or AR 500. In the case of A 36, the 36 refers to a minimum 36,000 PSI yield strength. As another example, AR 500 refers to the hardness level of 500 BHN, or the Brinell Hardness Number according to the Brinell scale.
Choosing the Right Grade of Steel
When choosing the right grade of steel for your application, its best to use what has been specified by the engineer or the customer. If that has not been established, a steel specialist at Titus Steel can explain the advantages and disadvantages of various grades and recommend the right grade of steel for your project.
To learn more about the different grades of steel, and Titus Steel’s high-quality and innovative product solutions, including ENDURA, ENDURA Dual, and Manganese Steel, contact us – your Wear & Impact Steel Specialists.
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