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Steel Balls
Stainless Steel Balls
Carbide Balls
Ceramics Balls
Brass / Copper Balls
Gauge Balls
Modified Balls
Burnishing Media
Other Material Balls
Other Precision Products
 
 
 
 
 
 
 
 
DSP Precision Products Pvt. Ltd.
Manufacturer & Exporter of Precision Balls & Allied Products
 
   
Si3N4
ZrO2
SiC
Al2O3
STEELS
Item
Unit
       
Bearing Steel
Stainless Steel
Density
g/cm3
3.2~3.3
6.00
3.1~3.2
3.95
7.85
7.90
Coefficient of linear expansion
10-6/K
3.20
10.50
4.50
8.50
10.0
11.0
Young's modulus
Gpa
300~320
210
350
380
208
200
Poisson's ratio
0.26
0.30
0.20
0.22
0.30
0.30
HRC Hardness
1400~1600
1000~1200
2500
1600~1800
700
30-62
Bending sdreagth
Mpa
800
950~1200
350
300~500
2400
 
Fracture toughness
MPam1/2
5.0~8.0
8.0~10.0
3.0~4.0
3.0~4.0
25
 
Thermal conductivity
W/mk
35
2~3
150
30
30~40
15
Special electrical Resitance
Ωmm2/m
1018
1015
1013
1018
0.1~1
0.75
Corrosion Resistance
 
good
good
good
good
poor
poor
Self-lubrication
 
good
good
good
 
poor
poor
Magnetism
 
 
 
 
 
magnetic
magnetic
Centrfngal force
 
little
 
 
 
high
high
Rolling Contact fatigue
 
spalling
crush
crush
crush
spalling