Is AR400 stronger than AR500?

AR400 and AR500 are abrasion-resistant (AR) steel grades, but their strength depends on the measured properties.

Key Differences:

Hardness:

AR400: Rated at approximately 400 HBW (Brinell Hardness), providing good wear resistance with some flexibility.

AR500: Rated at approximately 500 HBW, making it harder and more resistant to wear but also less ductile.

Result: AR500 is harder and better suited for static applications requiring extreme wear resistance, such as ballistic plates or mining equipment.

Impact Resistance:

AR400 offers better impact resistance due to its lower hardness, which makes it less brittle.

AR500: Higher hardness makes it more brittle, reducing its ability to absorb impact.

Result: AR400 is stronger in applications where flexibility and toughness under impact are required, such as heavy-duty machinery components.

Application Context:

Use AR400 if impact resistance and machinability are priorities.

Use AR500 if maximum hardness and abrasion resistance are necessary, even at the expense of flexibility.

Summary:

While AR500 is harder and has better wear resistance, AR400 can be considered "stronger" in terms of toughness and ability to withstand impacts. "Strength" depends on the specific needs of your project.

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