Customization: | Available |
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Standard: | GB, DIN, BS, ASTM, AISI, ISO9001:2000 |
Application: | Metallurgical Machinery, Cement Plant, Mining Machine, Coal Yard |
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Alumina oxide balls have proven capabilities with superior wear performance in corrosive environments and high temperature conditions.
The material resists oxidation and is tolerant to high moisture environments, salt solutions, and many chemicals.
Typical applications include pumps, valves and flow meters.
Items | Si3N4 |
ZrO2 |
99.5% Al2O3 |
SiC |
Steel | |
Density | g/cm³ | 3.23 | 6.05 | 3.92 | 3.12 | 7.85 |
Water absorption | % | 0 | 0 | 0 | 0 | 0 |
Coefficient of thermal expansion | 10-/k | 3.2 | 10.5 | 8.5 | 3 | 12.5 |
Young's modulus of elasticity | GPa | 300 | 210 | 340 | 440 | 208 |
Poisson's ratio | / | 0.26 | 0.3 | 0.22 | 0.17 | 0.3 |
Hardness (Hv) | MPa | 1500 | 1200 | 1650 | 2800 | 700 |
Flexural strength (room temperature) | MPa | 720 | 950 | 310 | 390 | 520 |
Flexural strength (700ºC) | MPa | 450 | 210 | 230 | 380 | / |
Compressive strength (room temperature) | MPa | 2300 | 2000 | 2200 | 1800 | / |
Fracture toughness | MPa ·m1/2 | 6.2 | 10 | 4.2 | 3.9 | 25 |
Thermal conductivity (room temperature) | W/m ·k | 25 | 2 | 26 | 120 | 40 |
Resistivity (room temperature) | Q ·mm²/m | >10¹³ | >10¹5 | >1016 | >10³ | 0.1~1 |
Maximum operating temperature (no load) | ºC | 1050 | 750 | 1750 | 1550 | 300 |
Acid and alkali corrosion resistance | / | Strong | Strong | Strong | Strong | Weak |
1. Established in 1997,25 years experience in wear solutions products.
Q: Are you a trading company or manufacturer?
A: We are a manufacturer.
Q: Is the sample free?
A: Yes, we offer free samples.
The sample air shipping fee will be returned when the bulk order?
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-30 days if the goods are not in stock, it is according to quantity.
Q: What are your terms of payment?
A: 30% T/T in advance, balance before shipment.
Q: Accept customized?
A: Yes. Kindly send all your details to our worker, please