ASTM F1080-93(2019)

• Abstract:

  SIGNIFICANCE AND USE; 3.1 This measurement of flow gives results that cannot be predicted with viscosity measurements, due to surface tension and density effects. The measured flow is related to flow performance of viscous materials sprayed on aircraft surfaces or other large structures.; SCOPE; 1.1 This test method describes a procedure for the determination of the flow of a standard volume of a semisolid or thick liquid under its own weight. ; 1.2 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only. ; 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. ; 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

• Status: Published
• Publication Date: 30-Apr-2019
• ICS: 17.060 - Measurement of volume, mass, density, viscosity
• Technical Committee: F07 - Aerospace and Aircraft
• Drafting Committee: F07.07 - Qualification Testing of Aircraft Cleaning Materials

• Replaces: ASTM F1080-93(2013) - Standard Test Method for Determining the Consistency of Viscous Liquids Using a Consistometer
• Effective Date: 01-May-2019

Overview

ASTM F1080-93(2019) is the internationally recognized standard developed by ASTM for the determination of the consistency of viscous liquids using a consistometer. This test method describes a reliable procedure to measure the flow of a standard volume of a semisolid or thick liquid under its own weight. Unlike traditional viscosity measurements, this method accounts for both surface tension and density effects, offering a better prediction of flow performance, particularly for materials applied to large surfaces such as aircraft structures.

The standard supports essential quality control and product formulation in industries where the flow characteristics of viscous liquids-such as gel coatings, lubricants, and adhesives-are critical for safety and functionality.

Key Topics

• Purpose and Scope: Specifies how to determine the flow of semisolid or thick liquids using a consistometer, providing flow performance insights beyond standard viscosity-based tests.
• Applicability: Suitable for evaluating materials where the consistency under self-weight is significant, including products used in aerospace, automotive, and industrial maintenance.
• Measurement Conditions:
  • All testing should use SI units as the standard.
  • Flow results must consider temperature and shear history, as these factors can influence repeatability and reproducibility.
  • The apparatus must be carefully leveled and operated per the procedures outlined in the standard.
• Reporting Requirements: Test reports should include material identification, test temperature, flow results, and test duration for traceability.
• Precision and Cautions: The standard highlights the importance of sample history and laboratory conditions for reproducible results and notes there are no absolute reference standards for consistency by this method.

Applications

• Aerospace Industry: Determines flow properties of deicing fluids, protective coatings, or cleaning agents intended for aircraft surfaces, which must perform consistently in application.
• Industrial Coatings and Maintenance: Assesses flow behavior for paints, resins, and lubricants applied to large structures, ensuring optimal coverage and adherence.
• Product Quality Control: Enables manufacturers to benchmark and control the consistency of viscous products, leading to improved product reliability and customer satisfaction.
• Research and Development: Used during the formulation of new viscous materials to optimize properties for specific flow applications or to assess batch-to-batch consistency.

Related Standards

• ASTM D2196: Standard Test Methods for Rheological Properties of Non-Newtonian Materials by Rotational (Brookfield type) Viscometer.
• ASTM D4400: Standard Test Method for Sag Resistance of Paints and Related Coatings.
• ASTM D4212: Standard Test Method for Viscosity by Dip-Type Viscosity Cups.
• ISO 2431: Paints and Varnishes - Determination of Flow Time by Use of Flow Cup.

These related standards provide alternative or supplementary methods for measuring viscosity, flow, and application properties of liquids and coatings in various industrial scenarios.

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Keywords: ASTM F1080, consistometer, viscous liquids, consistency testing, flow measurement, semisolid materials, aerospace coatings, industrial standards, quality control, flow performance

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: F1080 − 93 (Reapproved 2019)
Standard Test Method for
Determining the Consistency of Viscous Liquids Using a
Consistometer
This standard is issued under the fixed designation F1080; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope 4.3 Mixer capable of 1600 r/min and fitted with a 25 mm
(1 in.) diameter three-bladed propeller.
1.1 This test method describes a procedure for the determi-
nation of the flow of a standard volume of a semisolid or thick 4.4 Beaker, 500 mL.
liquid under its own weight.
5. Procedure
1.2 The values stated in SI units are to be regarded as the
5.1 Bring the material to be tested and the apparatus to the
standard. The values in parentheses are for information only.
same ambient temperature in the range from 20 to 25 °C (68 to
1.3 This standard does not purport to address all of the
77 °F).
safety concerns, if any, associated with its use. It is the
5.2 Agitate 250 mL of the material to be tested using the
responsibility of the user of this standard to establish appro-
mixer set at 1600 r/min, for 1 min 6 5 s, or until a vortex forms
priate safety, health, and environmental practices and deter-
that indicates all of the sample has been exposed to shear.
mine the applicability of regulatory limitations prior to use.
Avoid aeration of the sample as this may cause evaporation of
1.4 This international standard was developed in accor-
solvents.
dance with internationally recognized principles on standard-
5.3 Place the consistometer on a level surface and adjust the
ization established in the Decision on Principles for the
leveling screws until the bubble is centered.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
5.4 Close the consistometer gate and set the trigger.
Barriers to Trade (TBT) Committee.
5.5 Fill the consistometer reservoir with the material to be
tested (approximately 100 mL), and level the surface with a
2. Summary of Test Method
spatula or a straight edge.
2.1 A sample of the material to be tested is poured into a
5.6 Start the test by simultaneously tripping the consistom-
reservoir and the distance of flow in a horizontal direction is
eter gate trigger and starting the timing device.At 5 min 61s
read from a ruled track after a fixed time following the
(unless otherwise specified), read the distance the material has
materials release from the reservoir.
flowed. Average the result to the nearest 0.5 cm by taking the
3. Significance and Use
maximum distance indicated in the center of the trough and
adding this to the minimum distance at the edge of the trough
3.1 This measurement of flow gives results that cannot be
and dividing the result by two.
predicted with viscosity measurements, due to surface tension
and density effects. The measured flow is related to flow
6. Report
perfor
...