High purity alumina ceramic wear resisting of valve disc

Our industrial ceramic parts include, tube, rod, plate, disc, wafer, ring, seal, bearing, valves, pump plunger, beam, roller, shaft, screw, washer, sleeve, hunger, spacer, holder, carrier, insulator, scissors, knife, slitter, tweezers, tools, fixture, clamp, chuck, nozzle, guide, frame, lining, and grinding media, milling ball or beads.
These precision toleranced ceramic components or assemblies are used in a wide range of semiconductor, electronic, electrical, mechanical, chemical, automotive, textile and the other industrial engineering applications, due to their extreme hardness, more resistances to wear, heat, corrosion, high electric insulation, and low thermal expansion.

Properties

Unit

Zirconia

Alumina

Content

%

≥94

≥95

≥99.5

Density

g/cm3

6

3.65

3.85

Hardness 

Hv

1350

1300

1700

Bending strength

Mpa

1000

340

370

Compression strength

GPa

200

300

350

Dielectric Strength

kV/mm

11

15

15

Max use temperature

°C

2200

1400

1800

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