Si3N4 Ball

1.High temperature resistant 2.Corrosion resistant 3.Longer lasting 4.ISO9001 certificate 5.Plenty of stock

Size Range: 0.4mm~140mm

Grade: G5~G60

Company Feature: Stable quality and High consistency

Compared with steel ball, Si3N4 ball has following advantages:

1. 59% lighter than steel ball, which means less centrifugal force and less wear on the groove during high speed and acceleration.

2. 44% larger elastic modulus, which means less deformation under load

3. Harder with Rockwell hardness as 78

4. Smaller friction coefficient

5. Only 1/4 coefficient of thermal expansion of steel, can endure sharp fluctuation of temperature

6. Superior surface finish can be achieved, Ra could be 4~6 nm

7. Can endure high temperature with high hardness and strength up to 1050°C

8. Never rust, and can roll without lubrication.

9. More corrosion resistant than steel.

10. Free of metal contamination.

11. Non-magnetic

12. Electric isolation

13. No adhesive-wear with metal

14. Contact angular is very large with molten and nearly no reaction

All above combination makes Si3N4 to be first choice for high-demand bearing ball material and valve ball

Application:

Si3N4 ball can be used in all bearings with special requirement: high speed bearing, high precision bearing; vacuum bearing; high/low temperature bearing, non-magnetic bearing, high precision ball screw; Si3N4 ball can also be used as valve ball and metering ball in chemical pump, high-temperature pump, metering pump. Si3N4 ball can also be used in linear slider for high temperature and corrosion resistance.

Note:

1. Black color as standard, gray color could be supplied upon customer requirement

2. Non-standard size and different gauge could be supplied

If you are interested in this product or just want to know more about ceramic products, never hesitate to contact us.

We are looking forward to developing business relationships with you.

Chemical Characteristics

Item	Unit	Si3N4	ZrO2	Al2O3 99.5%	SiC	Bearing Steel
Density	g/cm3	3.23	6.05	3.92	3.12	7.85
Poisson’s Ratio	/	0.26	0.3	0.22	0.17	0.3
Hardness	MPa	1500	1200	1650	2800	700
Flexural Strength(@R.T)	MPa	720	950	310	390	520
Fracture Toughness, K	MPa·m1/2	6.2	10	4.2	3.9	25
Thermal Conductivity(@R.T)	W/m·k	25	2	26	120	40
Electrical Resistivity(@R.T)	Ω·mm2/m	>1013	>1015	>1016	>103	0.1-1
Max.Use temperature	°C	1050	750	1750	1550	300
Corrosion Resistance	/	excellent	excellent	good	excellent	poor

Si3N4 Ball