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6.35mm 1/4' silicon nitride ceramic ball

6.35mm 1/4' silicon nitride ceramic ball
Product Description

Silicon nitride is a chemical compound of silicon and nitrogen. It is a hard ceramic having high strength over a broad temperature range, moderate thermal conductivity, low coefficient of thermal expansion, moderately high elastic modulus, and unusually high fracture toughness for a ceramic. This combination of properties leads to excellent thermal shock resistance, ability to withstand high structural loads to high temperature, and superior wear resistance.

 

Classification:

Grinding Ball:the size is 1.5-40MM

Bearing Ball: the size is 0.4-60MM

Physical Property and Index:

Types

Data

Density

>3.2g/cm3

Flexural strength

800-1200Mpa

Compressive strength

>1500Mpa

Thermal conductivity(W/mk)

16-22

Porosity

0

Thermal expansion coeff.(RT-1000℃)

3.2

Max temperature

In air

1200℃

Hardness(HRA)

>92

 

Features:

1.Excellent corrosion resistance withstands attack from harsh chemicals and demanding environmental conditions.

2.Lightweight Silicon Nitride weighs 60% less than steel which reduces centrifugal force, skidding and wear under high speed and acceleration.

3.Superior Surface Finish, Ra 0.1 7-0.25 micro inches may extend L-10 life to as much as 10 times that of steel bearings.

4.High Temperature Hardness is twice that of steel. These all-ceramic balls retain their strength and hardness up to 1800 degrees F.

5.Silicon Nitride is further characterized by its low density of 3.2 g/cc, high flexural strength of 1.0 GPa, and fracture toughness of 6 MPa/M2.

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