Table of Contents
What is ASTM E10 standard?
ASTM E10, 2018 Edition, July 1, 2018 – Standard Test Method for Brinell Hardness of Metallic Materials. This test method covers the determination of the Brinell hardness of metallic materials by the Brinell indentation hardness principle.
What is an E10 test?
Using ASTM E10 as our accredited test specification, Brinell testing is a method of hardness testing using a tungsten carbide ball as the indenter. The indenter is brought into contact with the planar surface of a test specimen and held with a test force for a specified dwell time.
What are the uses of Brinell micrometer?
These machines are designed to measure hardness of casting, forgings, other metals and alloys of all kinds, hard or soft, whether flat, round or irregular in shape.
What is ASTM standard for the Rockwell hardness test?
The Rockwell hardness test, according to ASTM E18-20, is an indentation hardness test that involves the use of a verified machine to force a diamond spheroconical indenter or tungsten carbide (or steel) ball indenter into the surface of a material.
How do the Brinell tests actually measure hardness explain?
Brinell hardness is determined by forcing a hardened steel or carbide ball of known diameter under a known load into a surface and measuring the diameter of the indentation with a microscope.
What is a Brinell microscope?
Brinell Microscopes are used to measure the diameter of the indentation left by the hardness test machine.
What is Brinell hardness number?
The Brinell hardness number is a number proportional to the load or test force of a hard steel ball to the calculated curved area of the indentation formed. The ball diameter is 1, 2.5, 5, or 10 mm.
What is the least count of Brinell microscope?
0.01mm
Brinell Microscope
| Magnification | 20x |
|---|---|
| Reticle scale length | 7.00mm. |
| Least Count | 0.01mm. |
| Field of View | 6.00mm. |
| Weight | 1.500 Kg. |
What precautionary measures should be taken for the Brinell hardness test?
Precautions
- Testing Surface should be clean.
- Specimen should be flat and normal to indenter.
- Minimum thickness of workpiece should be 10 times of depth of impression.
- Distance between two indentation should be 2 or 3 times of dia of indentation.
- Thin hard component should not be tested on Brinell hardness.
What is ASTM E110 test method?
Active Standard ASTM E110 | Developed by Subcommittee: E28.06 Book of Standards Volume: 03.01 This test method establishes the standard procedures, including the calibration, precision and bias of the apparatus used, for the determination of indentation hardness of metallic materials by means of portable hardness testers.
What does e110-14 stand for?
ASTM E110-14, Standard Test Method for Rockwell and Brinell Hardness of Metallic Materials by Portable Hardness Testers, ASTM International, West Conshohocken, PA, 2014, www.astm.org
What is an ASTM designation number?
An ASTM designation number identifies a unique version of an ASTM standard. Active Standard ASTM E110 | Developed by Subcommittee: E28.06 Book of Standards Volume: 03.01
Do portable hardness testers meet the requirements of E10 and E18?
3.2 Portable hardness testers, by their nature, induce variation that could influence the test results; therefore, hardness measurements made in accordance with this test method are not considered to meet the requirements of E10 or E18.