YG6X Tungsten Carbide
YG6X tungsten carbide is a kind of tungsten-cobalt hard alloy, with a chemical composition of 93.5% tungsten carbide (WC) and 6% cobalt (Co). It has a density of 14.6-15.0g/cm³, a hardness of up to 91HRA, and a bending strength of 1400MPa. This material is made of ultra-fine grain alloy through low-pressure sintering, featuring uniform and dense structure without pores or sand holes. Its wear resistance is superior to that of YG6 type, but its impact toughness is slightly lower.
It is mainly used in the manufacture of wire drawing dies for drawing steel wires with a diameter of less than 6.0mm and non-ferrous metal wires/bars, and is suitable for the processing of hard alloy cutting tools such as turning tools, milling tools and tungsten carbide drills. YG6X hard alloy is also used to make wear-resistant parts such as hard alloy balls, sleeves and square bars, which are widely applied in precision bearings, valves, hardware, measuring instruments and fields of processing solid wood, density board, gray cast iron, chilled cast iron, hardened steel and other materials. The production process includes batching, mixing, crushing, drying, sieving, adding forming agent, re-drying, sieving to obtain mixture, granulation, compression molding, low-pressure sintering or isostatic pressing sintering and inspection. It can maintain uniform internal and external hardness without heat treatment, and is suitable for mass production of cold heading, cold stamping and cold pressing dies for standard parts and bearings.
1.Introduction to YG6X
Material Name: YG6X Category: Tungsten-Cobalt Type Service Performance and Application:
YG6X is a kind of tungsten-cobalt hard alloy with the grade YG6X, and its main metal content is 94% WC and 6% Co. It has the advantages of high hardness, wear resistance, corrosion resistance and bending resistance. Typical physical properties include a density of about 14.9 g/cm³, a hardness of about 92 HRA, and a bending strength of about 1800 MPa.
YG6X is a mold-making material. It has uniform internal and external hardness without heat treatment, and is used for mass production. It is suitable for the manufacture of cold heading, cold stamping and cold pressing dies for standard parts and bearings.
2. Chemical Composition
WC: 94% TaC(NbC): ＜0.5% Co: 6%.
3. Physical and Mechanical Properties
The density of YG6X tungsten carbide is 14.6-15.0 g/cm³, and the hardness is 91-93 HRA. The bending strength ranges from 1400 to 2480 MPa. Its wear resistance is superior to that of YG6 type hard alloy, but its impact toughness is slightly lower. This material also has the characteristics of corrosion resistance and bending resistance, with a uniform and dense structure without pores and sand holes.
| WC | Co | Grain size (μm) | Hardness(HRA) | Density(g/cm³) | TRS (N/mm²) |
| 94% | 6% | 0.2-1.6 | 91 | 14.90 | 2600 |
4. Production Process
The production process of YG6X hard alloy includes batching, full mixing, crushing, drying, sieving, adding forming agent, re-drying, sieving to obtain mixture, granulation, compression molding and sintering. The sintering can be carried out by low-pressure sintering, isostatic pressing sintering, vacuum integrated furnace or high-pressure sintering furnace. The subsequent production process includes inspection links, such as non-destructive ultrasonic flaw detection and blank dimensional accuracy detection.
5. Application Fields
YG6X tungsten carbide has a wide range of application fields, including precision bearings, instruments, meters, pen making, spraying machines, water pumps, mechanical parts, seal valves, brake pumps, punching holes, oil fields, laboratories, hardness measuring instruments, fishing gear, counterweights, decorations, precision processing and other industries.
It is used for the manufacture of cold heading, cold stamping and cold pressing dies for standard parts and bearings, as well as wire drawing dies requiring high wear resistance, which is suitable for drawing steel wires, non-ferrous metal filaments and their alloy wires or bars.
It is suitable for making wear-resistant tungsten and tungsten carbide wear-resistant parts, as well as tungsten sheets for semi-finishing and finishing of cast iron, non-ferrous metals and their alloys. It is also suitable for finishing and semi-processing of ordinary cast iron and high manganese steel workpieces, and can be used for other alloy tools, such as non-standard tungsten carbide parts.
It is used for processing turning tools, milling tools, tungsten carbide drills and other hard alloy cutting tools for materials such as chilled cast iron, hardened steel and brake materials.
It is mainly used for processing solid wood, density board, gray cast iron, non-ferrous metal materials, chilled cast iron, hardened steel, PCB and brake materials, and is widely used in various hardware industries, valves, bearings, die castings, punched parts, grinding, measurement, chemical industry, petroleum, military, and is suitable for making wear-resistant and impact-resistant parts.
6. Model Comparison
The wear resistance of YG6X is superior to that of YG6, but its service strength and impact toughness are slightly worse. In hard alloy ball products, its hardness and wear resistance are higher than those of YG6 alloy balls, and its toughness is slightly lower than that of YG8 alloy balls.
Common hard alloy ball models include YG6, YG6X, YG8, YG10X, YG11, YG13, YG15, YG20, YN6, YN9, YN12, YT5 and YT15, etc. YG6X is suitable for wire drawing dies requiring high wear resistance, which is applicable to drawing steel wires, non-ferrous metal filaments and their alloy wires or bars. It is also used as a high-grade mold-making material for the manufacture of cold heading, cold stamping and cold pressing dies for standard parts and bearings, and is also suitable for making wear-resistant and impact-resistant parts.
7. Research and Development
After the surface of YG6X hard alloy is irradiated by intense pulsed electron beam, remelting occurs. The WC particle size is refined and interdiffused with Co binder, forming a mixed phase structure of WC1-x, Co3W3C and Co3W9C4. The surface microhardness of the sample treated by 20 pulses increases to 24.3GPa, and the wear scar depth decreases from 2.96μm before modification to 0.4μm.
In the study on the brazing process of YG6X hard alloy and 40Cr steel, the maximum shear strength of the joint is 412.7MPa when Ni-10Co-10Si brazing filler metal is used for heat preservation for 5min, which optimizes the joint strength and interface structure.
Our company is among China’s top ten cemented carbide manufacturers. Should you require cemented carbide products, please contact us.