Categories
Price: | Negotiable/Piece |
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Trade Terms: | FOB,CFR,CIF |
Min Order: | 1/Piece |
Pay Type: | T/T,Paypal,Money Gram,Western Union |
Item | Unit | Si 3 N 4 | ZrO 2 | Al 2 O 3 99.5% | SiC | Bearing Steel |
Density | g/cm 3 | 3.23 | 6.05 | 3.92 | 3.12 | 7.85 |
Poisson's Ratio | / | 0.26 | 0.3 | 0.22 | 0.17 | 0.3 |
Hardness | MPa | 1500 | 1200 | 1650 | 2800 | 700 |
Flexural Strength(@R.T) | MPa | 720 | 950 | 310 | 390 | 520 |
Fracture Toughness, K | MPa@m 1/2 | 6.2 | 10 | 4.2 | 3.9 | 25 |
Thermal Conductivity(@R.T) | W/m@k | 25 | 2 | 26 | 120 | 40 |
Electrical Resistivity(@R.T) | Ω@mm2/m | >10 13 | >10 15 | >10 16 | >10 3 | 0.1-1 |
Max.Use temperature | °C | 1050 | 750 | 1750 | 1550 | 300 |
Corrosion Resistance | / | excellent | excellent | good | excellent |
poor |
PRODUCT INFORMATION |
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Item | high high quality 68% Al2O3 alumina ceraic ball |
Size | 1.5mm,2.0mm |
Application | to grind ceramic raw materials as a grinding medium |
FOB price | USD$420~500/ton FOB Qingdao |
MOQ | 1 ton |
Material | 60%<=Al2O3<=70% |
PRODUCT CHEMICAL COMPOSITION AND PHYSICAL PROPERTIES |
|
Al2O3 |
60%<=Al2O3<=70% |
Compressive strength | >=1500 |
Hardness mohs | 7-8 |
Volume density | >=3.0g/cm3 |
Water absorptivity | <=0.1% |
Equivalent abrasion | <=0.03% |
Color of product | beige |
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BUSINESS INFORMATION |
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Payment | optional L/C, DP ,TT etc. |
Transportation | FOB, CFR, CIF |
Packing details |
@ 50 kg per woven bag |
Export port | Qingdao;Shanghai,Shenzhen etc. |
Loading quantity | 25ton in 20'FCL |
Dimension | 30 | 40 | 50 | 60 |
Dia.(mm) | ± 1.5 | ±1.5 | ±2.0 | ±2.0 |
Performance | |||
Item | Unit | Zirconia | |
Physical Characteristics | Bulk density | g/cm 3 | 6.05 |
Water absorption | % | 0 | |
Mechanical Characteristics |
Flexural strength |
Mpa | 1000 |
Hardness Vickers | Gpa | 89 | |
Elastic modulus | Gpa | 200 | |
Poisson ' s ratio | - | 0.31 | |
Thermal Characteristics | Linear expansion coefficient | (20-500 0 C) 10 -6 / 0 C | 10 |
Thermal conductivity | w/(m.k) | 2.5 | |
Specific Heat |
*10 -3 J/(kg*K) | 0.5 | |
Electrical Characteristics | Dielectric constant (1MHZ) | - | N.A. |
Dielectric loss angle | *10 -4 | N.A. | |
Dielectric strength |
*10 6 V/m | N.A. | |
Processing technology | |||
Process range (mm) | |||
Outside Diameter | 1---300 | ||
Inside Diameter | 0.5---300 | ||
Length | 0.5---1200 | ||
Accuracy of working (mm) | |||
Perpendicularity | 0.01 | ||
Concentricity | 0.01 | ||
Roundness | 0.005 | ||
Straightness | 0.005 | ||
Parallelism | 0.01 | ||
Planeness | 0.005 | ||
Roughness | 0.05 | ||
Fit clearance | 0.005 |
Product Name | Ceramic ball (zirconia ZrO2 ) |
Size | Φ0.5mm_Φ50.0mm |
Grade | G5-G25 |
Hardness | Above 83 |
Density | 2.9-3.1 g/cm3 |
Feature | Zirconia ceramic has a series of good properties,such as high strength,good fracture toughness,high density,good abrasion resistance,high hardness and so on.Zirconia ceramics can be used as good abrasive and efficient grinding media. |
Applications | They are widely used in aviation, spaceflight, navigation, petroleum, chemical industry, metallurgy, electric power, automobile, textile, machinery, pumps, medical equipment, etc. |
Chemical composition | ZrO2: 95% Y2O3: 5% |
Product Name | Ceramic ball (silicon Si3N4) |
Size | Φ0.5mm_Φ80.0mm |
Grade | G5-G25 |
Feature |
1,59% lighter than steel ball, which means less centrifugal force and less wear on the groove during high speed and acceleration. 2. 44% larger elastic modulus, which means less deformation under load 3. Harder with Rockwell hardness as 92 4. Smaller friction coefficient 5. Only 1/4 coefficient of thermal expansion of steel, can endure sharp fluctuation of temperature 6. Superior surface finish can be achieved, Ra could be 4~6 nm 7. Can endure high temperature with high hardness and strength up to 1050°C 8. Never rust, and can roll without lubrication. 9. More corrosion resistant than steel. |
Applications |
Si3N4 be first choice for high-demand bearing ball material and valve ball. Si3N4 ball can also be used as valve ball and metering ball in chemical pump, high-temperature pump, metering pump. Si3N4 ball can also be used in linear slider for high temperature and corrosion resistance. |
Prod Model: | 4.7mm |
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Markets: | North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Eastern Asia,Western Europe |
Type: | Ceramic Balls |
Application: | Industrial Ceramic |
Materil: | Zirconia Ceramic |
Precision: | G5 |