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  • ASTM
    D2227-96(2011) Standard Specification for Natural Rubber (NR) Technical Grades
    Edition: 2011
    $144.00
    Unlimited Users per year

Description of ASTM-D2227 2011

ASTM D2227 - 96(2011)

Standard Specification for Natural Rubber (NR) Technical Grades

Active Standard ASTM D2227 | Developed by Subcommittee: D11.22

Book of Standards Volume: 09.01




ASTM D2227

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.

This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

Significance and Use

The general end-use quality of manufactured rubber products depends on the physical and chemical properties of the rubber.

1. Scope

1.1 This specification covers minimum physical and chemical quality requirements or specifications for five grades of raw natural rubber.


2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

D1278 Test Methods for Rubber from Natural Sources--Chemical Analysis

D1485 Practice for Rubber from Natural Sources--Sampling and Sample Preparation

D1646 Test Methods for Rubber--Viscosity, Stress Relaxation, and Pre-Vulcanization Characteristics (Mooney Viscometer)

D3157 Test Method for Rubber from Natural Sources--Color

D3194 Test Method for Rubber From Natural Sources--Plasticity Retention Index (PRI)

D3533 Test Method for Rubber--Nitrogen Content


Keywords

natural rubber (NR); technical grade ; Rubber--specifications; Technical grades; Natural rubber (NR)--specifications


ICS Code

ICS Number Code 83.040.10 (Latex and raw rubber)


DOI: 10.1520/D2227-96R11

ASTM International is a member of CrossRef.

ASTM D2227



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ASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide.
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