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Materials
Natural
Rubber
Specialty
NR Grades
Synthetic
Rubber
Carbon
Black
Titanium
Dioxide
Zinc
Oxide
|
TSR L
Natural Rubber Comparison
Chart
| |
|
|
|
|
| Parameter |
Unit
|
SIR
3L
|
SIR 3WF
|
SMR
L
|
STR
XL
|
STR
5L
|
SVR
L
|
SVR
3L
|
|
Dirt (max)
|
% wt
|
0.03
|
0.03
|
0.02
|
0.02
|
0.04
|
0.02
|
0.03
|
|
Ash (max)
|
% wt
|
0.50
|
0.50
|
0.50
|
0.40
|
0.40
|
0.50
|
0.50
|
|
Nitrogen (max)
|
% wt
|
0.60
|
0.60
|
0.60
|
0.50
|
0.60
|
0.60
|
0.60
|
|
Volatile Matter
(max)
|
% wt
|
0.80
|
0.80
|
0.50
|
0.80
|
0.80
|
0.80
|
0.80
|
| Po (min) |
|
30
|
30
|
35
|
35
|
35
|
35
|
35
|
| PRI index
(min) |
|
75
|
75
|
60
|
60
|
60
|
60
|
60
|
Colour
Lovibond Scale
(individual value, max) |
|
6.0
|
NA
|
6.0
|
4.0
|
6.0
|
4.0
|
6.0
|
These
figures are limits, not typical values. Typical values will
vary by producer.
|
|
