Specifications include, but are not limited to:ABRASION RESISTANT STEEL CUTTING EDGE;shall be at least C-1084 Steel,5/8” diameter holes shall be punched 12” on-center and1-1/2” from top edge to center of hole 13’ Edge @ 5/8" x 6"21 days$ /13’ section•5/8” diameter holes shall be punched 12” on-center and1-1/2” from top edge to center of hole 11’ Edge @ 5/8" x 6"21 days$ /11’ section•5/8” diameter holes shall be punched 12” on-center and2" from top edge to center of hole 11’ Edge @ 5/8" x 6". SNOW PLOW EDGES MeyersBBMPIPBOU29 5/8" x 6" x 8, Fisher3507 10' Edge, Western58818 - 13" Center Hole Punch 8' Edge, HARDENED CUTTING EDGES; Rockwell C hardness range 57-67 on wear portion ofblade. Minimum C-1074 steel. Minimum chemical composition specifications:Carbon 0.70-0.80; Manganese 0.50-0.90; Sulfur 0.05 max.; Phosphorus 0.05 max.;Silicone 0.03 max.
