Astlett Rubber Inc.

 
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Standard Indonesian Rubber (SIR)
Specification Scheme

 
Parameter

Unit

SIR
3CV50

SIR
3CV60

SIR
3L

SIR
3WF

SIR
5

SIR
10

SIR
10VK

SIR
20

SIR
20VK

Dirt (max)

% wt

0.03
0.03
0.03
0.03
0.05
0.10
0.10
0.20
0.20

Ash (max)

% wt

0.50
0.50
0.50
0.50
0.50
0.75
0.75
1.00
1.00

Nitrogen (max)

% wt

0.60
0.60
0.60
0.60
0.60
0.60
0.60
0.60
0.60

Volatile Matter (max)

% wt

0.60
0.60
0.80
0.80
0.80
0.80
0.80
0.80
0.80
Initial Plasticity (min)  
30
30
30
30
30
30
30
30
30
PRI index (min)  
60
60
75
75
70
60
60
50
50
Colour Lovibond Scale
(individual value, max)
 
NA
NA
6.0
NA
NA
NA
NA
NA
NA
Mooney Viscosity
(ML, 1+4, 100C)
 
50
+/- 5
60
+/- 5
NA
NA
NA
NA
60
+/- 5*
NA
60
+/- 5*

*Not specification status, but are controlled at the producer end.

These figures are limits, not typical values. Typical values will vary by producer.

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