Where is tungsten cd650 produced (difference between tungsten cd650 and cd750)

Is cd650 made of tungsten steel?

Tungsten steel

CD-EDM650+HIP, short for CD-EDM650+HIP, belongs to a kind of tungsten steel, the average particle is very small, for submicron tungsten steel. Excellent overall performance, good wear resistance, corrosion resistance.

Material CD650 compared with KD20, which is better?

KD20 tungsten steel

Hardness :91.5 Bending force :2990

Drawing force :580 compression strength :5400 Impact strength :29


Tungsten carbide (WC) Titanium carbide (TiC) Tantalum carbide (TaC) Niobium carbide (NbC)

KD20 Tungsten steel KD20 carbide


With good toughness and suitable wear resistance, it is mainly used for drawing dies for wire and bar processing. At the same time, it is also suitable for cast iron, non-ferrous metals and their alloys and non-metallic materials uneven surface and intermittent cutting when rough turning, fine planing and milling, general hole and deep hole drilling, reaming and making woodworking tools


Has good toughness and wear resistance, with wire and tube drawing die parts stamping die, motor rotor, EI steel sheet, LED wire frame stamping.

KD20 Tungsten steel KD20 carbide


1, the extension of mold life (high fatigue strength, not easy to produce stress concentration) 2, good life stability (crack occurrence and expansion time delay) 3, adhesion, greatly reduced gnawing (lubricant corrosion is extremely slight) 4, wire cutting EDM process corrosion resistance greatly improved (electric machining corrosion resistance is strong)

KD20 Tungsten steel KD20 carbide

CD650 tungsten steel

CD-EDM650+HIP, short for CD-EDM650+HIP, belongs to a kind of tungsten steel, the average particle is very small, for submicron tungsten steel. Excellent overall performance, good wear resistance, corrosion resistance.

I wonder what you’re for? Hope it helps you!

What is the difference between alloy GU20 and alloy KR855?

American Kenner tungsten steel KR855 is EDM discharge machining tungsten carbide material. The structure composition of the tungsten steel is submicrocrystalline and contains 10% corrosion resistant bonding phase. It has very good wear resistance and cutting edge sharpness, but its impact resistance is slightly lower than other grades of tungsten steel with high bonding phase content. The carbide is well suited for electrical discharge machining and has excellent properties in non-ferrous metal applications.

KR855 Tungsten steel Chemical composition % :

The chemical composition of the alloy is as follows:

WC: 90%

KR855 Tungsten steel Features:

Unlike other cemented carbides, KR855 uses powder materials produced by original steel mills, so it can ensure the use of high-quality tungsten carbide materials throughout the process, and improve the user’s production efficiency during the process.

Chemical composition of GU20:?

WC: 90

iC+TaC: —

Co: 10

GU20 Tungsten steel physical properties:?

GU20 tungsten steel density/(g/cm3) : 14.5

GU20 Tungsten hardness (HRA) : 92.3

GU20 tungsten steel bending strength (/MPa) : 3800

kr855 tungsten steel use

Suitable for high-speed stamping of medium and thin sheets (such as stamping copper, drawing ring dies for can molds, non-adhesive steel sheets, compaction forming dies, shaving sheets, lead frames, annealed copper stamping dies and drawing dies (300 series stainless steel), etc.)

KR855 Tungsten steel factory hardness and supply status

Tungsten steel factory hardness 91.8HRA.

Tungsten steel sheet specifications 1-90mm*105mm*105mm

Tungsten steel round rod specifications 1.2-32.2mm*330mm

Other tungsten steel grades: KR855, KR466, KR887, CD650, CD750

CD650 tungsten steel hardness how many degrees

CD650 tungsten steel (cemented carbide) has high hardness, wear resistance, strength and toughness, good heat resistance, corrosion resistance and a series of excellent properties, especially its high hardness and wear resistance, even at 500 ° C temperature is basically unchanged, at 1000 ° C still has a high hardness. The hardness of imported cemented carbide CD650 can reach more than 93HRA, and it is widely used in the following occasions:

All kinds of tools: turning tool, milling cutter, planing tool, drill, boring tool;

Cutting materials: cast iron, non-ferrous metals, plastics, chemical fiber, graphite, glass, stone and ordinary steel, can also be used to cut heat-resistant steel, stainless steel, high manganese steel, tool steel and other difficult to process materials.

Engineering tools: rock drilling tools, mining tools, drilling tools, measuring tools, wear-resistant parts, metal abrasives, cylinder lining, precision bearings, nozzles, etc.

Are there many kinds of tungsten steel?

Depending on the use, the characteristics are also different

Tungsten steel the following models: g1 g2 g5 g6 g7 d30 d40 k05 k20 yg3x yg3 yg4c yg6 yg8 yg9 yg10 yg12 yg15 yg20 yg25 yg28 yt5 yt14 yt15 p10 p20 m10 m20 m30 m40 v20 v30 v10 201 210 230 cd650 cd636

A steel containing tungsten

Tungsten steel products contain about 18% tungsten

Tungsten steel belongs to cemented carbide, also known as tungsten titanium alloy. The hardness is 10K, second only to diamond. Because of this, tungsten steel products (commonly known as tungsten steel watches) have characteristics that are not easy to wear.

Commonly used in lathe tools, percussion drill bits, glass knife head, tile cutter, hard not afraid of annealing, but brittle quality. It is classified as a rare metal.

[edit this paragraph] Tungsten steel sintered molding

Tungsten steel sintering molding is to press powder into billet, and then into the sintering furnace heating to a certain temperature (sintering temperature), and maintain a certain time (holding time), and then cool down, so as to obtain the required performance of tungsten steel material.

The sintering process of tungsten steel can be divided into four basic stages:

1: Remove the forming agent and pre-firing stage, in this stage the sintered body changes as follows:

The removal of the forming agent, with the rise of the temperature in the initial sintering stage, the forming agent gradually decomposes or vaporizes to exclude the sintered body, at the same time, the forming agent more or less carburizes the sintered body, and the amount of carburizing will change with the type and quantity of the forming agent and the different sintering process.

The surface oxide of the powder is reduced, and hydrogen can reduce the oxide of cobalt and tungsten at the sintering temperature. If the molding agent is removed in vacuum and the sintering process is not strong, the carbon-oxygen reaction is not strong. The contact stress between the powder particles is gradually eliminated, the bonded metal powder begins to recover and recrystallize, the surface diffusion begins to occur, and the strength of the compacts is improved.

2: Solid phase sintering stage (800℃– eutectic temperature)

At the temperature before the appearance of liquid phase, in addition to continuing the process of the previous stage, the solid phase reaction and diffusion are intensified, the plastic flow is enhanced, and the sintered body shows obvious shrinkage.

3: liquid phase sintering stage (eutectic temperature — sintering temperature)

When there is a liquid phase in the sintered body, the shrinkage is quickly completed, and then a crystallization transition occurs to form the basic structure and structure of the alloy.

4: cooling stage (sintering temperature – room temperature)

At this stage, the structure and phase composition of tungsten steel vary with the cooling conditions, and this feature can be used to heat treat tungsten steel to improve its physical and mechanical properties.

More Posts

Scroll to Top