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High Hardness 85HRA 3.9g/Cm3 Ceramic Plunger

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High Hardness 85HRA 3.9g/Cm3 Ceramic Plunger

Brand Name : Suzhou Jingci

Model Number : alumina ceramic tube

Certification : REACH Certificate; ISO9001-2015

Place of Origin : Suzhou, China

MOQ : Negotiation

Price : Negotiable

Payment Terms : T/T, L/C, D/A, D/P, Western Union

Supply Ability : 20000pcs per 30 days

Delivery Time : 5-8 work days

Packaging Details : Carton box&plastic bag 210mm*200mm*103mm

Name : alumina ceramic tube

Feature : High Hardness

Density : 3.9 g/cm3

Color : Ivory or white

Water Absorption : 0%

Vickers Hardness : 13Gpa

Flexural Strength (20°C) : 380Mpa

Hardness : 85HRA

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99% Alumina Ceramic Piston Inferior Pump Component Wear Resistance High Hardness


Part of ceramic insulation property:

1. High volume resistivity ≥1012ω·m;
2. Relative dielectric coefficient εr≤30;
3. Loss factor tgδ≤0.001;
4. High dielectric strength ≥500kv/cm

Part of temperature resistance property:

Aluminia ceramic> 1750℃
Zirconia ceramic> 1050℃
Silicon nitride > 1050℃
Silicon carbide > 1550 ℃

Part of wear resistance property:

Mohs hardness, 9
Rockwell hardness 85HRA
Water absorption, 0.2%
Volume density 3.65g/cm3


PropertiesUnitsAl2O3 99%
 Color--Ivory or white
 Water Absorption%0
 Vickers HardnessGpa13
 Flexural Strength (20°C)Mpa380
 Compressive Strength (20°C)Mpa3000
ThermalThermal Conductivity (20°C)W/m.K25~35
 Thermal Shock Resistance (20°C)ΔT(C)200
 Maximum Use Temperature°C1700
ElectricalVolume Resistivity (25°C)Ω.cm>1014


Alumina is a most commonly used ceramic material for pump components for its low cost and striking durability. Usually pistons made from 99% alumina ceramic are used as an important components in heating, dosing and high pressure pumps used in industrial, food and agricultural applications where corrosion and abrasion resistance are required and service longevity is needed.

About Us

Suzhou Jingci Super Hard Materials Co., Ltdhas been working on production of ceramic piston and piston for more than nearly 20 years and has rich experience in producing and quality control, and can produce pistons and plungers with diameters from 3mm to 240mm and Ra0.25 surface. Jingci has been an outstanding supplier for famous international customers like Karcher, Wilo and AR pump these years.

Jingci is always developing new thoughts and ways on the production of ceramic parts so as to provide qualified and economic products for customers’ critical-service application.

Product Tags:

3.9g/Cm3 Ceramic Plunger


85HRA Ceramic Plunger


85HRA alumina ceramic tube

China High Hardness 85HRA 3.9g/Cm3 Ceramic Plunger factory

High Hardness 85HRA 3.9g/Cm3 Ceramic Plunger Images

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