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Standard Malaysian Rubber (SMR)
Specification Scheme

 
Parameter

Unit

SMR
CV50

SMR
CV60

SMR
L

SMR
5*

SMR
GP

SMR
10

SMR
10CV

SMR
20

SMR
20CV

Dirt (max)

% wt

0.02

0.02

0.02

0.05

0.08

0.08

0.08

0.16

0.16

Ash (max)

% wt

0.50

0.50

0.50

0.60

0.75

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

0.80

0.80

0.50

0.80

0.80

0.80

0.80

0.80

0.80

Po (min) % wt
NA
NA
35
30
NA
30
NA
30
NA
PRI index (min)  

60

60

60

60

50

50

50

40

40

Lovibond Color:
individual value (max)
 
NA
NA
6.0
NA
NA
NA
NA
NA
NA
Lovibond Color:
range (max)
 
NA
NA
2.0
NA
NA
NA
NA
NA
NA
Mooney Viscosity
(ML, 1+4, 100C)
 
50
+/- 5
60
+/- 5
NA
NA
65
+7/-5
NA
60
+7/-5**
NA
65
+7/-5**

*Note: Two sub-grades of SMR 5 are SMR 5RSS (prepared by direct baling of ribbed smoked sheet) and SMR 5ADS (of air-dried sheet).

**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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