|
Material
|
70
Al2o3 |
75
Al2o3 |
80
Al2o3 |
85
Al2o3 |
90
Al2o3 |
95
Al2o3 |
99
Al2o3 |
|
Al2o3
|
65%
|
75%
|
80%
|
85%
|
90%
|
93%
|
99.3%
|
|
Fe2o3
|
≤ 4
|
≤ 2
|
≤ 1.5
|
≤ 1.0
|
≤ 0.5
|
≤ 0.5
|
≤ 0.3
|
|
Desnsity: g / cm3
|
2.8
|
3.10
|
3.20
|
3.40
|
3.50
|
3.60
|
3.85
|
|
Vickers Hardness
|
7.5
|
≤ 7.8
|
≥ 8
|
≥ 8.6
|
≥ 8.8
|
9
|
9
|
|
Water Absorption: %
|
≤ 4
|
≤ 1
|
≤ 0.5
|
≤ 0.2
|
≤ 0.1
|
≤ 0.085
|
≤ 0.01
|
|
Refractoriness: ℃
|
1300 ℃
|
1400 ℃
|
1450 ℃
|
1580 ℃
|
1600 ℃
|
1650 ℃
|
1800℃
|
|
Flexural Strength:Mpa
|
80
|
100
|
150
|
180
|
200
|
240
|
280
|
|
Wear Rate( at room temperature,
erosion, 100 grinding)% |
≤ 5
|
≤ 4.5
|
≤ 3.5
|
≤ 3
|
≤ 2.5
|
≤ 1
|
≤ 0.5
|
Purity of material: 95%, 96% and 99% alumina optional Process: Heat compression molding or dry-pressed molding
Color: White, Ivory, black optional
Size: Outer diameter up to 300mm; Minimal inner diameter:1mm; Thickness : Min. 0.8mm Length tolerance:≤± 0.05mm, Width tolerance≤± 0.1mm, Height tolerance ≤±0.1mm, Parallelism ≤ 0.03mm
Features:
1.Alumina ceramic seal faces have the property of the resistant-high-temperature, resistant-corrosion, resistant-wearing and good sealing.
2.Perfect flatness, no deformation.
1.Surface treatment: Polished or ground plane surface
4.Leadless glaze, the surface is bright, and without sharp edge at the corners. 5.The plane surface without pores,without miscellaneous points,without scratches and cracks. 6.Can be arbitrarily adjusted glaze color and glaze firing temperature