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Aluminum Oxide (Al2O3) Balls
  • Aluminum Oxide (Al2O3) Balls
  • Aluminum Oxide (Al2O3) Balls

Aluminum Oxide (Al2O3) Balls

ALUMINUM OXIDE (Al2O3) BALLSPolycristalline structure light weight oxide balls, they provide good mechanical characteristics,

ALUMINUM OXIDE (Al2O3) BALLS


Polycristalline structure light weight oxide balls, they provide good mechanical characteristics, corrosion, abrasion and heat resistance. They are auto lubricant and good electric insulators. Natural color white/ivory.

 

Applications

Special bearings, check valves, pumps and valves that operate in aggressive environments, petroleum pumps, flow meters, measurement instruments, medical devices.

 

Commercial name

Other name

Formula

Oxides %

Aluminum Trioxide

Alumina

Al2O3

99.00-99.99

 

Physical / Mechanical / Thermal / Electric / Magnetic Properties

Property

Symbol

U.o.M.

Type

Notes

Value

Density

δ

g/cm3

Physical

Room temp.

3.90

Young's modulus

E

GPa

Mechanical

-

365

Friction coefficient

µ

-

Mechanical

Room temp.

0.2

Specific heat

c

J/(kg·℃)

Thermal

Room temp.

795

Coefficient of linear thermal expansion

α

10-6/ºC

Thermal

(ΔT=0-100°C)

7.8

Thermal conductivity

λ

W/(m·K)

Thermal

Room temp.

31.0

Electric resistivity

ρ

Ω*m*10-9

Electric

-

> 1014

Relative magnetic permeability

µ

-

Magnetic

Diamagnetic

<1


Technical Data

Property

Type

U.o.M.

Values

U.o.M.

Values

Hardness

Mechanical

HV

1250-1700

-

-

Ultimate compressive strength

Mechanical

MPa

2100-2600

psi*103

304-377

Service temperature

Thermal

ºC

-100/1600

ºF

-148/2912


Rang

Diameters

U.o.M.

Diameters

U.o.M.

Precision Grade (ISO 3290)

2.381 - 50.800

mm

3/32 - 2

inch

G5 -......- G1000

 

Corrosion Resistance

Excellent corrosion resistance in water, salt solutions, acids, they are resistant even into aggressive environments excepted hydrofluoric, hydrochloric acids, hot sulphuric acid and strong alkaline solutions.