- STARRETT 3814 HARDNESS TESTER MANUAL
- STARRETT 3814 HARDNESS TESTER PORTABLE
- STARRETT 3814 HARDNESS TESTER SERIES
Bench Top Rockwell Hardness Tester HR 150 A Testing Table
STARRETT 3814 HARDNESS TESTER PORTABLE
This high quality, affordable, portable tester is a must for large workpieces, small machine shops, heat treaters, quality control personnel, and engineers. It is exceptionally useful where the test piece is too large or heavy to test on a bench-type tester. Not technically a Rockwell tester, but this tester measures the hardness of metals in the range of 20 to 65 HRC on the equivalent Rockwell C Scale. PTC 316 Steel Hardness Tester: Portable C Scale
It is used to test thin and small parts, such as thin plates, thin tubes, thin axles, small balls, small stamping parts, and small supporting surfaces. It is as accurate as desk testers and complies with the basic designing principles of Rockwell hardness testing. This tester is compact, light and weighs only 1.2 kg. Test the hardness of steel plates, pipes, axes, molds, huge forgings, and huge and medium-size heat treatment parts. With high accuracy and complying with ISO6508 and ASTM E18, this scale has good repeatability and features a similar reading system to a micrometer, making it easy to read. GUOCAO PHR-100 Portable Magnetic-type Rockwell Hardness Tester With a direct analog reading, this scale has an advanced design and is easy to operate. Phase Ii Plus, Analog Rockwell Hardness TesterĪlso conforming to the ASTM E18 hardness standards, this scale is perfect for any environment, including heat treatment facilities, toolrooms, workshops, etc. Featuring a high-quality casting and ergonomically designed for easy operation, this option is suitable for any lab, toolroom, workshop or inspection department. This scale has the ability to handle Rockwell scales A through H and K and conforms to ASTM E18 standards. Starrett 3814 Analog Bench Hardness Tester Check out this graph to get a better idea of which Rockwell hardness scale will meet your needs.Ī Rockwell hardness scale is an investment, so if you’re interested in checking out some models, here are some recommendations. The most common Rockwell hardness scales are B and C, however, there is a multitude of alternative scales. Make sure to select the scale right for your application needs. There are over 30 different Rockwell scales with their own distinguished test forces and indicator types. A movement of just 0.001” could result in an error of over 10 Rockwell points.įactors like material type and thickness will require different scales. To get an idea of how delicate the process is, know that one point on the Rockwell measuring scale is 0.002 mm or 0.00008”. It is critical that the material be secure in place during the test process, as any movement will result in error.
STARRETT 3814 HARDNESS TESTER MANUAL
This can be achieved by paying close attention the manual and properly educating yourself (which can be done by watching tutorials like the video noted above).Ī major factor to pay attention to is the support of the material. The operator of the Rockwell hardness scale must follow proper methods and practices. The accuracy this test can achieve is not to be taken lightly as there is a high level of human technique and care needed to maintain the integrity of the test. If you are interested in obtaining a complete understanding and holistic background of the Rockwell hardness test, we recommend diving deeper into the ASTM E18 -20 Standard Test Methods for Rockwell Hardness and the Rockwell Superficial Hardness of Metallic Materials. Here are a couple of visuals that should help you understand the concept. The applied forces usually range between 15 kgf and 3,000 kgf but varies depending on the test and the type of material. The difference between the initial and final indentation is measured, then converted to a hardness number, and that is how the hardness of the material is calculated. This is repeated with a heavier load, called the major load, and then repeated for a third time once again with the preliminary load. After a specific hold time, the load is removed, and the indent is measured. An indenting tool, typically a diamond or ball indenter, presses against the material’s surface.
STARRETT 3814 HARDNESS TESTER SERIES
The hardness test is done through a series of pressure tests. The test must be carried out with a specific type of scale or tester, called a Rockwell hardness scale. There are myriads of hardness tests out there, however the Rockwell hardness test is the most common hardness test used in the metalworking industry today, due to its speed and accuracy. After executing the Rockwell hardness test, you will be able to understand exactly how your material will perform and react to machining processes.
This test was created to determine the hardness and strength of materials. Hardness is defined as a material’s resistance to permanent indentation. The Rockwell hardness test is the industry standard measuring system used to determine how resistant a material is to another object.