Cemented carbide, also known as hard compound alloy material of metal, is a kind of alloy material made of hard compound of refractory metal and bonding metal through powder metallurgy process. Cemented carbide has a wide variety, adapted to a variety of cutting, wear-resistant, impact-resistant and other aspects of the working conditions, so its application in daily production and its wide range. Next, I will take you to see the introduction of different kinds of Cemented Carbide.
　　Cemented carbide has a series of excellent properties such as high hardness, wear resistance, better strength and toughness, heat resistance, corrosion resistance, etc. In particular, its high hardness and wear resistance remain basically unchanged even at a temperature of 500℃, and it still has high hardness at 1000℃. There are three main types of cemented carbide for cutting tools, cemented carbide for geological and mining tools and cemented carbide for wear-resistant parts.

　　I. Cemented carbide for cutting tools:
　　Cemented carbide for cutting tools is divided into six categories of P, M, K, N, S and H according to the different fields of use;

　　Class P: TiC, WC-based, Co (Ni + Mo, Ni + Co) as a binder alloy/coating alloy, commonly used in the processing of long chip materials, such as steel, cast steel, long cutting malleable cast iron processing; to grade P10, for example, adapted to the machining conditions for high cutting speeds, medium and small chip cross-section conditions of turning, profiling turning, thread turning and milling;
　　Class M: WC-based, Co as a binder, adding a small amount of TiC alloy/coating alloy, commonly used in stainless steel, cast steel, manganese steel, malleable cast iron, alloy steel, alloy cast iron, etc.; to grade M01, for example, adapted to high cutting speeds, small load, no vibration conditions of fine turning, fine boring.
　　Class K: WC-based, Co as a binder, adding a small amount of TaC, NbC alloy/coating alloy, commonly used in the machining of short-chip materials, such as cast iron, cold-hard cast iron, short-chip malleable cast iron, gray cast iron, etc. machining;
　　Class N: WC-based, Co as a binder, adding a small amount of TaC, NbC or CrC alloy/coating alloy, commonly used in non-ferrous metals, non-metallic materials, such as aluminum, magnesium, plastics, wood and other processing;
　　Class S: alloy/coating alloys based on WC, with Co as binder and a small amount of TaC, NbC or TiC, generally used in the processing of heat-resistant and high-quality alloy materials, such as heat-resistant steels, nickel-containing, cobalt-containing, titanium-containing alloys of various types of materials processing;
　　Class H: WC-based, Co as a binder, adding a small amount of TaC, NbC or TiC alloy/coating alloy, commonly used in the processing of hard cutting colorful, such as hardened steel, cold hard cast iron and other materials;
　　Second, geology, mining tools with cemented carbide:
　　Cemented carbide for geological and mining tools is divided into the following categories according to the different parts of use:
　　A: Cemented carbide for rock drilling and brazing pieces; operating conditions, for example, grade GA05, is suitable for soft or medium-hard rock with uniaxial compressive strength less than 60MPa, and grade GA50/GA60 is suitable for hard rock or very hard rock with uniaxial compressive strength greater than 200MPa; with the increase of the grade number, the abrasion resistance decreases and the toughness is enhanced.
　　B: Cemented carbide for geological exploration;
　　C: Cemented carbide for coal mining;
　　D: Cemented carbide for mining and oil field drilling;
　　E: Cemented carbide for composite sheet matrix;
　　F: Cemented Carbide for snow plow blade;
　　W: Cemented carbide for digging teeth;
　　Z: other categories;
　　This category of alloy Rockwell hardness can reach HRA85 and above, bending strength is generally more than 1800MPa.
　　Third, wear-resistant parts with cemented carbide
　　Wear-resistant parts according to the use of the field is divided into:
　　S: metal wire, bar, tube drawing with carbide, such as drawing molds, sealing rings.
　　T: Cemented carbide for stamping molds, such as fastener stamping and steel ball stamping molds.
　　Q: Cemented Carbide for high temperature and high pressure components, e.g. synthetic diamond for top hammer, press cylinder, etc.
　　V: Cemented Carbide for wire rod rolling rolls, such as rolls for high-speed wire rod rolling and finishing units.