Loader spade edges are generally made of SUN5002 material. SUN5002 is a material which is add various rare wear-resistant alloy elements on the basis of the original boron steel. The quality is more stable, the hardness is higher, the wear resistance, strength and toughness are better, and the appearance is smoother and beautiful. The Loader spade edges is heat treated by large-scale heat treatment equipment, and the hardness is above HRC 46 degrees, and it has excellent harden-ability. The hardness of core and surface is almost the same. It is 4-5 times higher than normal edge and has more balanced Comprehensive mechanical properties, and have full size to applied to the bucket of multiple specifications. We could offer full range of cutting edges and end bits. Both for aftermarket and customer designed parts. Generally two material, boron steel SUN5002(HRC 46-52) and Carbon steel 45# (HRC 26-32). SUNMACH is dedicated to produce and sale of wear parts for all types of heavy construction equipment, which includes, but is not limited to, bulldozer cutting edges and end bits, grader blades and overlays, loader cutting edges, bucket cutting edges, tooth and adaptor, track shoe and Ripper Shank, carbide and white iron products, etc.China Loader Spare Parts manufacturers website:http://www.wearpart.com/loader-spare-parts/