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AR450 Steel Plate - Hardness 420-470 Brinell

What is AR450 Steel Plate?

AR450 Steel is a type of abrasion resistant steel that has a surface hardness of 420-470 Hardness Brinell. It is a high-carbon steel alloy composed of several different elements, such as carbon and boron. Its unique composition and treatment allow it to provide more surface hardness than AR400, while maintaining good ductility, formability, and impact resistance.

AR450 Steel Plate Sizes

  • Valast® 450:125” - .315” thickness offered in 48”-81” wide cut to your requested length
  • .375” – 2.00” thickness offered in standard sizes (96” x 240”/288”)

Steel Warehouse supplies AR450 Steel Plate, which is an abrasion-resistant steel with a unique surface hardness. Speak to an expert metallurgist today to see how we can utilize AR450 to suit your needs. 

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AR450 Abrasion Resistant Steel

Properties of AR450 Steel

AR450 steel has more surface hardness than AR400, good ductility and formability, as well as being impact resistant, as previously mentioned. It has a tensile strength of 214 KSI, yield strength of 181 KSI, and hardness of 429-495 Brinell. Some other important characteristics can be found below.

  • Welding = Good - CEV max 0.45, CET max 0.33, PCM max 0.32
  • Impact strength = Longitudinal ≥ 20 ft.lbs
  • Corrosion Resistance = Minimal
  • Machining/Grinding = Not Recommended
  • Bending/Forming = Excellent considering the hardness
  • Wear Resistance = Outstanding

AR450 Steel Requirements

AR450 meets the following standards:

  • EN 10029
  • EN 10051


What are the Benefits of AR450 Steel Plate?

AR450 steel plate can reduce industrial wear application issues that may arise due to rubbing or scraping and erosion. By reducing wear, it can maximize your production time and minimize any downtime you previously suffered due to worn parts; This may also improve the longevity of your vehicles or machinery.

AR450 Mechanical and Physical Properties

Tensile Strength (MPa) 1475
Yield Strength (MPa) 1250
Hardness (HBW) 420-470

Differences Between AR400, AR450, & AR500

The greatest differentiator between AR450, AR400, and AR500 is the hardness that each achieves. Typically, AR400 is between 360-440 Brinell, while AR450 is around 429-495 Brinell, and AR500 between 460-544 Brinell. Another key differentiator is applications. While all three types of abrasion resistance steel offer great hardness, they vary in terms of formability and brittleness.

In applications where the steel must be hard with good formability, AR400 and AR450 are typically used. When wear is a critical issue that a certain application faces, AR500 may be more appropriate due to its increased hardness and wear resistance over the other two carbon alloys.

Cost is another factor that can impact the choice of abrasion-resistant steel. AR450 and AR500 are both more costly than AR400, as they achieve higher degrees of hardness. In some instances, you may choose to use a less costly option that may need to be replaced more frequently rather than the more expensive option.

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