| Customization: | Available |
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| Material: | Tungsten Carbide, Tungsten Carbide |
| Pressure: | High Pressure, High Pressure |
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Material grade
Cobalt Binder notes
| Grade | Carpeta (wt %) | Density (g/cm3) | Hardness (HRA) | TRS (> = N/mm²) |
| YG6 | 6 | 14,8 | 90,0 | 1520 |
| YG6X | 6 | 14,9 | 91,0 | 1450 |
| YG6A | 6 | 14,9 | 92,0 | 1540 |
| YG8 | 8 | 14,7 | 89,5 | 1750 |
| YG12 | 12 | 14,2 | 88,0 | 1810 |
| YG15 | 15 | 14,0 | 87,0 | 2050 |
| YG20 | 20 | 13,5 | 85,5 | 2450 |
| YG25 | 25 | 12,1 | 84,0 | 2550 |
| Grade | Binder (Wt %) | Density (g/cm3) | Hardness (HRA) | TRS (> = N/mm²) |
| YN6 | 6 | 14,7 | 89,5 | 1460 |
| YN6X | 6 | 14,8 | 90,5 | 1400 |
| YN6A | 6 | 14,8 | 91,0 | 1480 |
| YN8 | 8 | 14,6 | 88,5 | 1710 |
The valve seat is a detachable face part in the valve to support the fully closed position of the spool and form a sealing pair. General valve seat diameter is the maximum flow diameter of the valve. Such as butterfly valve seat material is very broad, all kinds of rubber, plastic, metal materials can be used as the seat material, use elastic sealing material and small thrust actuator for bubble tight seal, seating compression stress make the elastic deformation and packed into with rough surface of metal parts, in order to block all the leak path. The permeability of the material is the basis for a small amount of leakage to the fluid.
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common sintered balls diameters (mm)
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0.4
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1.0
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42.826
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62.0
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70.0
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80.0
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90.0
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we have more than 100 kinds of diameter for your choose,other diameters pls chat with sellers.
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Valve pairs sizes for choosing
| VII-106 | VII-125 | VII-150 | VII-175 | VII-200 | VII-225 | VII-250 | VII-375 | |
| Ball diameter | 0.625"(15.88) | 0.750"(19.05) | 0.938"(23.83) | 1.125"(28.58) | 1.250"(31.75) | 1.375"(34.93) | 1.688"(42.88) | 2.250"(57.15) |
| Saddle height | 0.500"(12.70) | 0.500"(12.70) | 0.500"(12.70) | 0.500"(12.70) | 0.500"(12.70) | 0.500"(12.70) | 0.500"(12.70) | 0.750"(19.05) |
| outer diameter | 0.793"(20.14) | 0.918"(23.32) | 1.168"(29.67) | 1.388"(35.26) | 1.478"(37.54) | 1.720"(43.69) | 2.010"(51.05) | 3.072"(78.03) |
| inner diameter | 0.460"(11.68) | 0.550"(13.97) | 0.670"(17.02) | 0.825"(20.96) | 0.960"(24.38) | 1.060"(26.92) | 1.310"(33.27) | 1.700"(43.18)/ 1.880"(47.75) |
The material properties of soft seat should be considered
1) Fluid compatibility, including expansion, hardness loss, permeability, degradation;
2) hardness;
3) Permanent deformation;
4) Degree of recovery after load elimination;
5) Tensile strength and compression strength;
6) Deformation before fracture;
7) Elastic modulus.
Compared with other material, cemented carbide high hardness, good wear resistance, compressive strength and mechanical properties, therefore, widely used for chemical etching, the working conditions of easy oxidation, for all kinds of solution, requirements of stable atmosphere corrosion resistance and oxidation resistance, for the development of all kinds of corrosion resistance, oxidation resistance of hard alloy and hard alloy material applied in various fields, The corrosion of cemented carbide on various acids is mainly the selective dissolution of the bonding phase, so in order to improve the corrosion resistance, Wc-ni alloy with Co bonding phase replaced by Ni, WC-Cr3C2-MO2C-Ni alloy with Cr3C2 or Mo2C, WC-Ti (C, N) or WC-Ti (C, N) TaC non-bonding phase cemented carbides (also known as anti-oxidation carbides) with less than 1.5% bonding phase are widely used Excellent Cr3C2-Ni alloy with Cr3C2 as main component
Our Advantages:
1:High strength, high wear resistance, high precision, high temperature resistant, corrosion resistant.
2:They are mainly used for the sealing of valves of oil pumps in petroleum industry's sand containing wells, viscous oil wells, sea oil wells and high pressure sulfur resistant oil wells, etc.
3 They are used with compatible cemented carbide valve seats. The surface finish, tolerance class and tolerances of dimensions have respectively reached the standards of the machine industry: G5, G10, G16, G40 and G100 of JB/T 9145-1999.
4:Precision machined cemented carbide balls of other grades and specifications are also available based on customers' demands.
5:Compatible high precision valve seats can also be made available.
YG6 YG8 tungsten carbide ball for valve pair & oil industry
Product Description
| Product name | Tungsten carbide balls |
| Series | YG6 YG8 YN6 YN8 |
| Feature | Large hard Tungsten Carbide ball has high hardness, wear resistance, corrosion resistance, bending resistance, and bad use environment, and can replace all steel ball products. Carbide ball hardness ≥ 90.5, density = 14.9g/cm3. |
| Density | 14.9g/cm3 |
| Product process line | The production process of cemented carbide ball is similar to that of other cemented carbide products, mainly including powder preparation → recipe according to application → wet grinding → mixing → crushing → drying → sieving → adding molding agent → drying → sieving Prepared mix → granulation → cold isostatic pressing → forming → sintering → forming (blank) →grinding → packaging → storage. According to the specific application requirements and related parameters, there are carbide alloy ball, tungsten steel ball, tungsten ball, high-density alloy ball and other carbide ball products. The smallest carbide ball can do about 0.3 in diameter. |
Various Size of Aseeder tungsten carbide balls in many types of tungsten carbide grade are available
| Grade | Density ( g/cm3) | Hardness ( HRA) | T.R.S(MPa) | Grain size ( μm) | Composition ( % ) | Equal to ISO |
| YG8 | 14.65~14.85 | ≥89.5 | ≥2320 | 1.2~2.0 | 8%CO 92%WC | K20 |
| YG6 | 14.85~15.05 | ≥90.0 | ≥2150 | 1.2~2.0 | 6%CO 94%WC | K10 |
| Dia.(mm) | Dia.(inch) | Dia.(mm) | Dia.(inch) |
| 2 | 3/38 | 8 | 23/73 |
| 2.38125 | 3/32 | 9.525 | 3/8 |
| 2.5 | 6/61 | 10 | 37/94 |
| 3 | 2/17 | 11.1125 | 7/16 |
| 3.175 | 1/8 | 12 | 43/91 |
| 3.969 | 5/32 | 12.7 | 1/2 |
| 4 | 3/19 | 13.494 | 17/32 |
| 4.7625 | 3/16 | 14 | 43/78 |
| 5 | 12/61 | 14.2875 | 9/16 |
| 5.556 | 7/32 | 15 | 13/22 |
| 6 | 13/55 | 15.875 | 5/8 |
| 6.35 | 1/4 | 16 | 17/27 |
| 7 | 8/29 | 19.05 | 3/4 |
| 7.938 | 5/16 | 20 | 37/47 |
| Tolerances: AFBMA Ball Tolerances Table | |||||
| Grade | Sphericity in inches | Sphericity in mm | Basic Diameter Tolerance in inches | Basic Diameter 2 in mm | Maximun Surface Roughness |
| G3 | 0.000003" | 0.0000762mm | +/-0.00003" | +/-0.000762mm | 0.5 |
| G5 | 0.000005" | 0.000127mm | +/-0.00005" | +/-0.00127mm | 0.8 |
| G10 | 0.000010" | 0.000254mm | +/-0.0001" | +/-0.00254mm | 1 |
| G25 | 0.000025" | 0.000635mm | +/-0.0001" | +/-0.00254mm | 2 |
| G50 | 0.000050" | 0.00127mm | +/-0.0002" | +/-0.00508mm | 3 |
| G100 | 0.0001" | 0.00254mm | +/-0.0005" | +/-0.0127mm | 5 |
| G200 | 0.0002" | 0.00508mm | +/-0.001" | +/-0.0254mm | 8 |
| G500 | 0.0005" | 0.0127mm | +/-0.002" | +/-0.0508mm | |
| G1000 | 0.001" | 0.0254mm | +/-0.005" | +/-0.127mm | |
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We look forward to the business of being of service of you.
Hope to hear from you soon.
+86 1897330 7762
Kate Caiz
Evergreen Hardmetal tools co.,Ltd
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