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Last Updated: Dec 15, 2015
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ASTM D2227-96(2011)
Standard Specification for Natural Rubber (NR) Technical Grades
Standard Specification for Natural Rubber (NR) Technical Grades
D2227-96R11
ASTM|D2227-96R11|en-US
Standard Specification for Natural Rubber (NR) Technical Grades
Standard
D2227 Standard Specification for Natural Rubber (NR) Technical Grades >
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BOS Vol. 09.01 Committee D11
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Significance and Use
The general end-use quality of manufactured rubber products depends on the physical and chemical properties of the rubber.
Abstract
This specification covers the minimum physical and chemical requirements for five technical grades of raw natural rubber. Materials are classified into grades according to retained dirt content, ash content, volatile matter content, nitrogen content, initial plasticity, plasticity retention index, color index, and Mooney viscosity. Skim rubber is not permitted in any grade.
Scope
1.1 This specification covers minimum physical and chemical quality requirements or specifications for five grades of raw natural rubber.