---
title: "ASTM D2663"
url: "https://mat-cs.com/astm-d2663/"
description: "These test methods cover the degree of dispersion of carbon black in rubber."
---

ASTM Standard

# ASTM D2663

Standard Test Methods for Carbon Black—Dispersion in Rubber

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## Significance and Use

5.1 Visual dispersion ratings correlate with certain important physical properties of the compound. A rating of 5 indicates a state of dispersion developing near maximum properties, while a rating of 1 would indicate a state of dispersion developing considerably depressed properties. Normally, the visual dispersion ratings indicate the following levels of compound quality:

Visual Dispersion Rating

Classification

4 to 5

High

3 to 4

Intermediate

2 to 3

Low

1 to 2

Very low

## Scope

1.1 These test methods cover the degree of dispersion of carbon black in rubber. Four test methods are described as follows:

Sections

Test Method A—Visual Inspection

3 – 11

Test Method B—Agglomerate Count

12 – 22

Test Method C—Microroughness Measurement

with Profilometer

23 – 33

Test Method D—Microroughness Measurement with IFM

34 – 42

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.