United States > All 3M Products > Market Segments > Manufacturing and Industry > 3M™ Glass Bubbles > 3M™ Glass Bubble Portfolio Table
Particle Size(microns, by volume)
Distribution
3MProduct
Target Crush Strength(90% survival, psi)
TrueDensity(g/cc)
10th%
50th%
90th%
EffectiveTop Size(>=95%)
K37
3,000
0.37
20
45
80
85
S38
4,000
0.38
15
75
S38HS
5,500
K42HS
7,500
0.42
11
22
37
42
S60
10,000
0.60
30
55
65
iM16K
16,500
0.46
13
31
S60HS
18,000
50
60
iM30K
28,000
9
16
25
29