Laserfiche WebLink
C. The finished cutting edge shall have a Brinell hardness number, under a 3000 <br />kilogram load, of not less than 250 nor more than 350 for high carbon blades, and <br />not less than 400 nor more than 520 for heat treated blades. The Brinell hardness <br />number will be determined by the current Method Test for Brinell Hardness of <br />Metallic Materials, ASTM Designation E10. <br />d. A chemical analysis of each melt of steel shall be made available by the <br />manufacturer to determine the percentages of the elements specified. <br />3. The cutting edges shall be of the length specifier[ on the request for quotation form and <br />shall be double bevel, curved, 5/8 inch or 3/4-inch-thick, and 6 inch or 8 inch wide after <br />forming. The bevel shall be 1 inch in length and the cutting edge shall have a radius <br />curvature of 7 1/2 inch to 10 inch. The finished blade section will be given a coat of rust <br />resistant paint and shall be free of warpage and longitudinal deviation. The cutting <br />edges for 5/8-inch blades and 3/4-inch blades shall be punched with 11 /16-inch square <br />holes with countersink to receive 5/8-inch diameter #3 plow bolt. Hole punching to be <br />"standard highway punch" (end 2 holes on each end of the blade on 3-inch centers, <br />and the remaining holes 12-inch spaced center to center across the middle of the <br />blade) as per the diagram below. <br />LENGTH (AS SPECIFIED ON REQUEST FOR <br />3" , 3" <br />3" 1 3" <br />. ...{ ._"'__ ________________61 [ p_____.___..... ......0......___.____..____E3.._____._.______._._"'_G--"G7..... r�-. <br />Version 1/30/2020 Special Provisions - 11 <br />