MaTestLab > Test Standards > ASTM D2583 Standard Test Method for Indentation Hardness of Rigid Plastics by Means of a Barcol Impressor
Last updated 22nd October 2024
ASTM D2583 Standard Test Method for Indentation Hardness of Rigid Plastics by Means of a Barcol Impressor
ASTM D2583, test method involves measuring the indentation hardness of both reinforced and nonreinforced rigid plastics by using a Barcol Impressor. The Barcol Impressor is commonly used to evaluate the hardness of fabricated components and individual test specimens for the sake of production control because it is portable.
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ASTM D2583 Introduction
ASTM D2583 is used to determine the indention hardness of rigid plastics by means of the barcol impressor. A Barcol Impressor is used to determine the surface hardness of a material. A comparison of the hardness of the material is drawn by using the relative depth of penetration of the Impressor’s indentor.
The Barcol Impressors Model Nos. 934-1 and 935 are used for plastics. Model No. 935 is used to measure softer materials within the range of hardness assessed by these Impressors, whereas the Model No. 934-1 is used to measure harder materials.
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ASTM D2583 Test Procedure
Specimen Selection
It is important to choose representative specimens that accurately reflect the material being evaluated. The representative samples of the rigid plastic materials should be in the form of flat sheets or blocks with sufficient thickness to accommodate the Barcol impressor indentation.
Test Setup and Execution
The test setup involves preparing the necessary equipment, sample preparation, sample conditioning, calibration, selecting a suitable test area, indentation, reading, repeat testing, calculating the average Barcol Hardness Number (BHN). The specimen is kept under the indenter of the Barcol hardness tester and a uniform amount of pressure is applied to get maximum dial indication in the tester. Depth of penetration is recorded and converted into absolute Barcol numbers by the testing instrument.
ASTM D2583 Equipment and Sample Preparation
Specimen Details
The specimen selection process involves selecting the material, obtaining representative samples, conditioning them in a controlled environment, determining the appropriate sample size, ensuring clean surfaces, random selection, unique identification, and documentation.
Specimen dimensions
The specimen should have a minimum thickness of 0.25 inches (6.35 mm) and a minimum width and length of 2 inches (50.8 mm).
ASTM D2583 Test Results and Interpretation
The results obtained from ASTM D2583 provide valuable information about the Barcol Hardness Number (BHN), a dimensionless value representing the material’s resistance to indentation, and a qualitative assessment. The test also provides a correlation between BHN values and qualitative hardness levels for specific types of rigid plastics. Comparative analysis can be used to assess relative hardness differences and identify variations impacting performance.
Tests Related to ASTM D2583 Test
Important relevant tests to ASTM D2583 include ASTM D638 for tensile properties of plastics, ASTM D790 for flexural properties of Unreinforced and Reinforced Plastics , ASTM D256 for impact resistance of plastics, ASTM D648 for measuring deflection temperature of plastics.
Use of ASTM D2583 in Various Industries
This standard is known as the Barcol hardness test and is adopted by aerospace, automotive, marine, and construction industries for the evaluation of the hardness of rigid plastics and reinforced composites.
Materials Commonly Tested with ASTM D2583
It is a surface hardness test for fiberglass-reinforced plastics, thermoset resins, hard rubbers, or polymer-based composites; the surface hardness of a material meets required specifications for structural or load-bearing applications.
Common Challenges and Troubleshooting in ASTM D2583 Testing
Some of the problems experienced in the measurement of hardness value in testing result from operator variability and improper calibration of the Barcol hardness tester. This includes recalibration to obtain the correct measuring hardness value, use of flat samples, and uniform pressure during the taking of the measurements.
Safety and Best Practices in ASTM D2583 Testing
Safety in testing means handling sharp indenters, stable material positioning, keeping calibration regular, surfaces clean, force constant, and PPE usage where samples may be large or heavy, such that infrequent accidents would be avoided.
Importance of ASTM D2583
This standard is crucial for determining the surface hardness of rigid plastics and composite materials, especially in industries such as aerospace and automotive. It ensures that the material is tough, resistant to wear, and performs well over time, hence the safety and quality standards are met.
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How many samples are required for astm d2583?
The required number of samples or specimens should comply with the procedure given in the astm d2583 standard. However, the MaTestLab operations team can assist you for your special requirements once you share your testing details with us.
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The turnaround time for astm d2583 test methodology depends upon the test procedure mentioned in the standard test document. However, we at MaTestLab understand your research requirements and hence try to get your test completed within the least possible time.
Where can I get the astm d2583 tested?
You can share your astm d2583 testing requirements with MaTestLab. MaTestLab has a vast network of material testing laboratories, spread across the USA and Canada. We support your all material testing needs ranging from specific astm d2583 test to various testing techniques.
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