Curtis Sno-Pro Cutting Edges

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High Carbon Steel Cutting Edges that fit Curtis Plows are made from C-1090 steel and have a Brinell hardness range of 250-300. Very tough and long lasting. The cutting edges we carry for the Curtis plows come in lengths of 90", 96", 102", 108". Our Curtis cutting edges come in 3/8" thickness. Our edges replace manufacturer numbers: 1TBP49A, 1TBP49B, 1TBP49J, and 1TBP49C. When ordering cutting edges be sure to add a set of cutting edge bolts and nuts. For the Curtis plow we sell SETS OF 6, 8, and 9.

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What is Brinell Hardness? The Brinell test is used to determine the hardness of material in relationship to other materials along a consistent scale, so that scientists can both replicate results and have a frame of reference for the given hardness of a material. During the test, a small steel or carbide ball is forced into the material of unknown hardness with a set amount of pressure. The area of the resulting indentation is measured, and a mathematical formula is applied to yield a Brinell hardness number. Brinell hardness is commonly used in reference to metals and alloys, although it can refer to other materials as well.

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In a test for Brinell hardness, the ball used is typically approximately 4/10 of an inch (10 millimeters) in diameter. If the material is extremely hard, the ball will be made from tungsten or carbide, while a plain steel ball is sufficient for softer substances. The amount of pressure also varies depending on the material, but a standard amount of pressure for harder substances is 6,614 pounds (3,000 kilograms). The ball is forced into the material being tested for thirty seconds and then removed so that the indent can be measured. The formula divides the force used by the surface area of the indentation.

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The steel used for our cutting edges have a Brinell hardness of 250-300. This is a steel with a higher yield strength and if more difficult to form without cracking. It has a minimum yield strength of 100,000 psi.

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