Feature: | Long Time Materials |
---|---|
Refractoriness (℃): | 1580< Refractoriness< 1770 |
Applications: | Electronical |
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Material |
Unit |
Steatite ceramics |
95% alumina ceramics |
99.5% alumina ceramics |
Density |
G/cm3 |
2.7 |
3.65 |
3.85 |
Highest application temperature |
°C |
1100 |
1500 |
1800 |
Bending strength |
Mpa |
150 |
300 |
340 |
Compressive strength |
Mpa |
900 |
3400 |
3600 |
Hardness |
HV0.5 |
800 |
1800 |
2000 |
Insulation breakdown strength |
KV/mm |
10 |
15 |
18 |
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 |