Cemented carbide grades. Tungsten Carbide Grades 2019-01-23

Sandvik H10F Extra

On the other hand, it also has lower compressive strength and inferior thermal shock resistance. Its excellent characteristics led to its rapidly becoming the major material in the market following its release in the 1970s. Do not apply on soft steel. Also use for finished chilled cast iron and fully pearlitic cast iron. The subdivisions are shown with two-digit numbers such as P01, P10 and P20 etc. A basic knowledge of each cutting tool material and its performance is important when making the correct selection.

Carbide Materials

Best applied when abrasion resistance is the desired benefit. Covers a broad range of steel applications in the P20-25 range. Questions or comments about MatWeb? Subsequent development occurred in various countries. Uncoated cemented carbide grades represent a very small proportion of the total cutting tool assortment. High toughness, hardness and wear resistance. The smooth coating provides good resistance to edge build-up and microchipping and produces excellent surface finishes.

Sandvik H10F Extra

It performs well in light to medium machining of all cast irons. Heat post-treatment is not required. Lamellar coatings have numerous thin layers in the nanometer range that make the coating even harder. Later, in order to obtain better wearing resistance, the Cobalt content has to be decreased. Speeds may vary from low to medium and will handle interruptions and high feed rates. The plates of this superhard alloy are applied to manufacturing of metal-cutting and drilling tools; they are usually soldered on the cutting tool tips. Modern cermets are nickel-free and have a designed structure of titanium carbonitride Ti C,N core particles, a second hard phase of Ti,Nb,W C,N and a W-rich cobalt binder.

Binderless Cemented Carbide

It can be applied over a wide range of continuous to interrupted cuts where superior surface finish is needed. Extremely high hardness and wear resistance. New grade designed specifically for the job shop industry where a wide range of workpiece materials is employed. Dry machining is preferred while using this grade. Also use for finishing chilled cast iron and fully pearlitic cast iron. The wear rate of uncoated cemented carbide grades is rapid yet controlled, with a self-sharpening action.

Cemented Carbide Grade Properties

This makes the grade suitable for roughing to finishing all types of highly abrasive workpieces. Provides superior depth-of-cut notch resistance compared to whisker ceramics. Knowledge of when and how to use ceramic grades is important for success. Diamond is the hardest, and therefore the most abrasion-resistant, of all materials. This grade offers an excellent combination of strength and toughness.

Kennametal Carbide Grades

The user should select suitable lubricant and keep the mould using in a clean environment. Always use a T-land edge prep if possible. Increased tensile strength for cutting edge stability. It consists of fine particles of cemented into a by a binder metal. The coating also helps to decrease the temperature associated with the cutting process and increase the life of the tool.

Carbide Materials

The first cemented carbide developed was introduced in 1927 which uses tungsten carbide particles held together by a cobalt metal binder. Use on low to medium silicon-content aluminum alloys, non-metallics, copper, and brass and zinc based alloys. Both values are only valid from 20 °C 68 °F to 60 °C 140 °F , but more data is available from Hidnert. Do not apply on soft steel, rapid crater wear will result. Always use a T-land edge prep if possible. It also acts as a thermal barrier to improve plastic deformation resistance. Coating layers offer good wear resistance over a wide range of machining conditions and the post-coat treatment minimizes microchipping and improves coating adhesion to substrate leading to long tool life and improved workpiece finishes.

Cemented carbide

Cermets can also be applied for troubleshooting in all ferrous materials. Provides superior depth-of-cut notch resistance compared to whisker ceramics. The grain size is well controlled for minimal pits and flaws which contributes to long, reliable service. Coated cemented carbide combines cemented carbide with a coating. The cemented carbide body is formed, either through powder pressing or injection molding techniques, into a body, which is then sintered to full density.

Carbide Materials

Very high hardness and high toughness. Binder content that is too low may result in a brittle material. Very effectively applied on bearing steels, hot and cold work tool steels, high-speed steels, die steels, case hardened steels, carburized and nitrided irons, and some hard coatings. The finer grain size means higher hardness at a given binder phase content. Best general-purpose turning grade for most steels and ferritic and martensitic stainless steels. Use for high-speed continuous turning of gray cast iron, including through scale.

ISO Grade Classifications

The coating properties have been continuously improved for adhesion, toughness and wear through microstructural optimizations and post-treatments. At the same time, researchers are trying to improve the performance of cemented carbide by adding rare metal carbides. . Application: Used for high-speed, semifinish turning and boring of carbon steels, alloy steels, stainless steels and ductile and malleable irons. To offset these problems, the carbide cutting tip itself is often in the form of a small insert for a larger whose shank is made of another material, usually carbon. Cemented carbide is a tool material that has all properties necessary for cutting tools, including hardness and strength.