WEAR RESISTANT STEEL
ABRASION RESISTANT STEEL (AR) AR200/AR235 AR400F AR450F AR500F
AR400F, AR450F, and AR500F ('F'-with increased Formability) are heat treated, quenched, and tempered alloy steels that are used in applications where shock and abrasion are the primary cause of failure. AR400F(388 - 430 BHN) and AR450F (440 - 470 BHN) provide excellent resistance to impact and sliding abrasion. AR500F (475 - 544 BHN) handles severe abrasion and moderate impact.
AR200 VS AR400 vs AR450 vs AR500:
AR steels are governed by a level of hardness, but not a specific chemistry.
Mills use a hardness test – the Brinell Test – to determine the category.
Brinell Hardness Number (BHN) :
AR200/AR235/AR Medium: 180-250 BHN
AR400: 360-440 BHN
AR450: 430-480 BHN
AR500: 460-544 BHN
FAQ: How do you know your project needs AR400?450?500?
Find balance between hardness and brittleness.
As hardness increases, brittleness increases, and makes the material difficult to form, shape and weld.
If hardness is critical, brittleness is sacrificed. If the material must be formed and handled, hardness has to be reduced.
Normally, AR400 and AR450 are the “sweet spots” in terms of good hardness combined with good formability. It truly needs to beat up the material, AR500 will last longer and need to be replaced less frequently.
Cost, is also a factor to be considered Lesser products need to be replaced more often.
Drilling and machining:
AR400F, AR450F, and AR500F can be drilled or machined with high speed carbide tools at low speeds. As the hardness level of the plate increases, it is necessary to decrease the cutting speed and feed depth.
Welding:
As conditions warrant, pre-heating is recommended on all thicknesses. For welding AR plate, we recommend that low hydrogen electrodes be used; such as E-70XX, E-80XX, E-90XX, E-100XX, and E-110XX
Shearing and Punching:
Flame cutting is recommended on thicker plate and on our AR450F and AR500F. AR400F can be sheared or punched in thicknesses up to 1/4”.
Forming
AR400F and AR450F can be cold formed in a press brake or rolls. At sharper bends, forming should be performed with the axis of bend at right angles to the rolling direction or cross grain of the plate. Remove rough edges on plate by grinding prior to forming. It is necessary to allow for a bending radius of 3 to 5 times that of ordinary steel. Minimal cold forming can be performed on our AR500F with proper equipment.
Fabrication:
For any fabrications requiring on our abrasion resistance steels AR400F, AR450F, AR500F or Manganese Steel, please contact our sales/engineering team for quotes or any consulting.
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