1.HRE Test Scale and Principle: · The HRE hardness test uses a 1/8-inch steel ball indenter to press into the material surface under a load of 100 kg, and the hardness value of the material is determined by measuring the indentation depth.
① Applicable material types: Mainly applicable to softer metal materials such as aluminum, copper, lead alloys and some non-ferrous metals.
② Common application scenarios: Quality control and hardness testing of light metals and alloys. Hardness testing of cast aluminum and die castings. ·Material testing in the electrical and electronic industries.
③ Features and advantages: ·Applicable to soft materials: The HRE scale is particularly suitable for softer metal materials and provides accurate hardness testing. Lower load: Use a lower load (100 kg) to avoid excessive indentation of soft materials. High repeatability: The steel ball indenter provides stable and highly repeatable test results.
④ Notes or limitations: Sample preparation: The sample surface needs to be flat and clean to ensure the accuracy of the measurement results. Material limitations: Not applicable to very hard materials because the steel ball indenter may be damaged or produce inaccurate results. Equipment maintenance: The test equipment needs to be calibrated and maintained regularly to ensure the accuracy and reliability of the measurement.
2. HRF Test Scale and Principle: The HRF hardness test uses a 1/16-inch steel ball indenter to press into the material surface under a load of 60 kg, and the hardness value of the material is determined by measuring the indentation depth.
① Applicable material types: · Mainly applicable to softer metal materials and some plastics, such as aluminum, copper, lead alloys and some plastic materials with lower hardness.
② Common application scenarios: Quality control and hardness testing of light metals and alloys. ·Hardness testing of plastic products and parts. Material testing in the electrical and electronic industries.
③ Features and advantages: Applicable to soft materials: The HRF scale is particularly suitable for softer metal and plastic materials, providing accurate hardness testing. Low load: Use a lower load (60 kg) to avoid excessive indentation of soft materials. High repeatability: The steel ball indenter provides stable and highly repeatable test results.
④ Notes or limitations: · Sample preparation: The sample surface needs to be flat and clean to ensure the accuracy of the measurement results. ·Material limitations: Not suitable for very hard materials as the steel ball indenter may be damaged or produce inaccurate results. ·Equipment maintenance: Test equipment requires regular calibration and maintenance to ensure measurement accuracy and reliability.
3. HRG Test Scale and Principle: HRG hardness test uses a 1/16 inch steel ball indenter to press into the material surface under a load of 150 kg, and determines the hardness value of the material by measuring the indentation depth.
① Applicable material types: Mainly suitable for medium to hard metal materials, such as certain steels, cast iron and cemented carbide.
② Common application scenarios: Quality control and hardness testing of steel and cast iron parts. Hardness testing of tools and mechanical parts. Industrial applications of medium to high hardness materials.
③ Features and advantages: Wide range of application: HRG scale is suitable for medium to hard metal materials and provides accurate hardness testing. ·High load: Uses a higher load (150 kg) and is suitable for materials with higher hardness. High repeatability: The steel ball indenter provides stable and highly repeatable test results.
④ Notes or limitations: Sample preparation: The sample surface needs to be flat and clean to ensure the accuracy of the measurement results. Material limitations: Not suitable for very soft materials, as the steel ball indenter may over-press into the sample, resulting in inaccurate measurement results. Equipment maintenance: The test equipment needs to be calibrated and maintained regularly to ensure the accuracy and reliability of the measurement.
4. HRH① Test Scale and Principle: HRH hardness test uses a 1/8 inch steel ball indenter to press into the material surface under a load of 60 kg, and the hardness value of the material is determined by measuring the indentation depth.
① Applicable material types: Mainly suitable for medium hardness metal materials such as copper alloys, aluminum alloys and some harder plastic materials.
② Common application scenarios: Quality control and hardness testing of metal sheets and pipes. Hardness testing of non-ferrous metals and alloys. ·Material testing in the construction and automotive industries.
③ Features and advantages: Wide range of application: The HRH scale is suitable for a variety of medium hardness materials, including metals and plastics. Lower load: Use a lower load (60 kg) for softer to medium hardness materials to avoid excessive indentation. High repeatability: The steel ball indenter provides stable and highly repeatable test results.
④ Notes or limitations: Sample preparation: The sample surface needs to be flat and clean to ensure the accuracy of the measurement results. Material limitations: It is not suitable for very hard materials because the steel ball indenter may be damaged or produce inaccurate results. Equipment maintenance: The test equipment needs to be calibrated and maintained regularly to ensure the accuracy and reliability of the measurement.
5. HRK Test Scale and Principle: The HRK hardness test uses a 1/8 inch steel ball indenter to press into the material surface under a load of 150 kg, and the hardness value of the material is determined by measuring the indentation depth.
① Applicable material types: Mainly suitable for harder materials such as certain cemented carbides, steel and cast iron. It is also suitable for non-ferrous metals of medium hardness.
② Common application scenarios: Manufacturing and quality control of cemented carbide tools and molds. Hardness testing of mechanical parts and structural parts. Inspection of cast iron and steel.
③ Features and advantages: Wide range of applications: The HRK scale is suitable for materials ranging from medium to hard materials, providing accurate hardness testing. High load: Use a higher load (150 kg), suitable for materials with higher hardness, to ensure the accuracy of the test results. High repeatability: The steel ball indenter provides stable and highly repeatable test results.
④ Notes or limitations: Sample preparation: The sample surface needs to be flat and clean to ensure the accuracy of the measurement results. Material limitations: For extremely hard or soft materials, HRK may not be the most suitable choice, because the steel ball indenter may over-press or under-press the sample, resulting in inaccurate measurement results. Equipment maintenance: The test equipment needs to be calibrated and maintained regularly to ensure the accuracy and reliability of the measurement.
Post time: Nov-14-2024
