Specialty Balls / Plastics - Alumina Oxide

Alumina Oxide Ceramic

Balls: Alumina Oxide
Material	Size Range	Grade
Alumina Oxide	.11811” - 1” (3.0mm - 25.4mm)	C10*
	.11811” - 1” (3.0mm - 25.4mm)	C25*
	.11811” - 2” (3.00mm - 50.8mm)	50
	.11811” - 4” (3.00mm - 101.6mm)	100
	.11811” - 6” (3.00mm - 152.4mm)	200
Alumina Oxide - *Alumina Oxide is specified as grade C10 and C25 which is equal to grade 10 and 25, except surface finish is less then or equal to 3Ra.

Ceramic balls are particularly well suited for use in extremely harsh environments where high temperatures, corrosive and erosive substances are present. Standard 99.5% alumina oxide ceramic balls have proven performance in wear, heat and corrosive environments, as well as, in maintaining dimensional stability at temperatures up to 2000°F. Alumina resists oxidation and is tolerant to water, salt solutions, and many chemicals and acids, but is not suitable for use in hydrochloric or hydrofluoric acids or strong alkaline solutions. Typical applications include pumps, valves and flow meters.

Properties	Units	Test Method	Criteria
Density	gms/cc	ASTM-C20	3.9
Water Absorption	%	ASTM-373	0
Color	-	-	Ivory/White
Flexural Strength 20^oC	MPa (psi X 10³)	ASTM-F417	379 (55)
Youngs Modulus	GPa (psi X 10⁶)	ASTM-C848	370 (54)
Compressive Strength 20^oC	Mpa (psi X 103)	ASTM-C773	2600 (377)
Poissons Ratio	-	ASTM-C848	0.22
Hardness	Knoop (Rockwell 45 N)	-	14.1 (83)
Fracture Toughness	Mpa m 1/2	Notched Beam	4-5
Coefficient of Thermal Expansion	1 X 10^-6/^oC	ASTM-C372	8.2
Thermal Shock Resistance	^oC	160

Please note that the material information provided on our website is for informational purposes only. The properties listed per product type are typical and can vary based on suppliers of raw materials and customer specific needs. Please contact customer service for verification prior to ordering. Price and delivery may be subject to change based on specific requirements.

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Specialty Balls / Plastics - Alumina Oxide

Alumina Oxide Ceramic

Units

Test Method

Criteria

Density

gms/cc

ASTM-C20

3.9

Water Absorption

%

ASTM-373

0

Color

-

-

Ivory/White

Flexural Strength 20o C

MPa (psi X 103)

ASTM-F417

379 (55)

Youngs Modulus

GPa (psi X 106)

ASTM-C848

370 (54)

Compressive Strength 20oC

Mpa (psi X 103)

ASTM-C773

2600 (377)

Poissons Ratio

-

ASTM-C848

0.22

Hardness

Knoop (Rockwell 45 N)

-

14.1 (83)

Fracture Toughness

Mpa m 1/2

Notched Beam

4-5

Coefficient of Thermal Expansion

1 X 10-6/oC

ASTM-C372

8.2

Thermal Shock Resistance

oC

160

Flexural Strength 20^oC

MPa (psi X 10³)

GPa (psi X 10⁶)

Compressive Strength 20^oC

1 X 10^-6/^oC

^oC