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High Hardness 85HRA 3.9g/Cm3 Ceramic Plunger

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High Hardness 85HRA 3.9g/Cm3 Ceramic Plunger

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

Large Image :  High Hardness 85HRA 3.9g/Cm3 Ceramic Plunger

Product Details:
Place of Origin: Suzhou, China
Brand Name: Suzhou Jingci
Certification: REACH Certificate; ISO9001-2015
Model Number: alumina ceramic tube
Payment & Shipping Terms:
Minimum Order Quantity: Negotiation
Price: Negotiable
Packaging Details: Carton box&plastic bag 210mm*200mm*103mm
Delivery Time: 5-8 work days
Payment Terms: T/T, L/C, D/A, D/P, Western Union
Supply Ability: 20000pcs per 30 days

High Hardness 85HRA 3.9g/Cm3 Ceramic Plunger

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
High Light:

3.9g/Cm3 Ceramic Plunger


85HRA Ceramic Plunger


85HRA alumina ceramic tube

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




Properties Units Al2O3 99%
Mechanical Density g/cm3 3.9
  Color -- Ivory or white
  Water Absorption % 0
  Vickers Hardness Gpa 13
  Flexural Strength (20°C) Mpa 380
  Compressive Strength (20°C) Mpa 3000
Thermal Thermal Conductivity (20°C) W/m.K 25~35
  Thermal Shock Resistance (20°C) ΔT(C) 200
  Maximum Use Temperature °C 1700
Electrical Volume 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.


Contact Details
suzhou jingci super hard materials co.,Ltd

Contact Person: Mrs. Wang

Tel: 18862487753

Fax: 86-0512--66952686

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