Wear resistance of steel is most conveniently classified by its hardness. Generally, wear resistance increase with hardness.
BENNOX SS10 / 200, Wear Plate 200 - Hardness 200BHN min - a unheat treated steel with a carbon range of 0,40 0,55%. This is a low quality wear resistance grade which gives imporved performance over commercial quality steel. Weldability and fabrication properties are poor. Plain carbon unheat treated steels have largely been replaced by low alloy quenched and tempered steels.
ROQ LAST - Hardness 360 and 400 respectively. This is a Low Alloy Roller Quenched and Tempered steel which has substantially better wear resistance than Bennox, while also retaining excellent weldability and ductility. This material has been improved in recent years to the point where it is now being used in structural / wear applications. Typical applications: - Dump truck bowls, earthmoving machinery, wear, chute liners etc.
ROQ LAST 500 - Hardness 480 BHN min, usually above 500BHN. This is the hardest wrought plate steel available and is the most resistant. It has become well accepted by the mining industry and is a stock item at many mines. Roqlast 500 is also specified by most mine design engineers. Machining and Bending is limited due to the high hardness.
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Bennox SS10 / 200
ROQLAST TH 360
ROQLAST TH 400
ROQLAST TH 500