Information on the most widely used ASTM standards within the materials testing industry
Model: HRS-150, HRMS-45
HRS-150 Touching Screen Rockwell hardness tester is an electromechanical hardness testing instrument.
The touchscreen digital Rockwell hardness tester features a novel appearance, a large screen display, and a Windows menu-style interface. It is a Rockwell hardness tester that can be self-calibrated, with hardness values displayed directly in numbers. Test results can be printed directly, and the system has built-in single-point and multi-point modes. It provides storage for 200 sets of single-point data and 100 sets of multi-point data. Additionally, the multi-point mode offers hardness distribution curve data analysis, automatically calculating the maximum, minimum, and average values, which facilitates user analysis of test data. It also includes over-limit hardness alarms and a built-in printer for data printing.
Model: HRS-150 Rockwell Hardness Tester
HRMS-45 Superficial Rockwell Hardness Tester
General Introduction
HRS-150 Touching Rockwell hardness tester is an electromechanical hardness testing instrument.
The touchscreen digital Rockwell hardness tester features a novel appearance, a large screen display, and a Windows menu-style interface. It is a Rockwell hardness tester that can be self-calibrated, with hardness values displayed directly in numbers. Test results can be printed directly, and the system has built-in single-point and multi-point modes. It provides storage for 200 sets of single-point data and 100 sets of multi-point data. Additionally, the multi-point mode offers hardness distribution curve data analysis, automatically calculating the maximum, minimum, and average values, which facilitates user analysis of test data. It also includes over-limit hardness alarms and a built-in printer for data printing.
Hardness is one of the important indicators of the mechanical properties of materials, and hardness testing is an important means to judge the quality of metal materials or parts. Since the hardness of metals corresponds to other mechanical properties, most metal materials can roughly estimate other mechanical properties such as strength, fatigue, creep and wear by measuring hardness.
Model: HRS-150 Rockwell Hardness Tester
HRMS-45 Superficial Rockwell Hardness Tester
Key Features
Main body adopts integrated casting process (not use the steel plate welding), with good stability, the appearance adopts automobile paint and novel touch true color LED large screen display, the machine has good reliability, operability and intuitiveness is a set of mechanical and electrical high-tech products, with the touch screen is more convenient to operate than the physical buttons and is not easy to fail.
1.1 Selection of Rockwell hardness scale
1.2 Selection of plastic Rockwell scale (special requirements, supplied by contract)
1.3 Hardness conversion between hardness scales (according to ASTM-E140 table)
1.4 During the test, it can be directly determined whether the test result is qualified
1.5 Printout of hardness test results
1.6 The company selects the USB interface as the super terminal for users to output test data. And can be used as a function extension in the future.
1.7 Cast iron equipment body, more robust and stable than steel plate welding.
The indenter moves down into position on the part surface
A minor load is applied and a zero reference position is established
The major load is applied for a specified time period (dwell time) beyond zero
The major load is released leaving the minor load applied.

The resulting Rockwell number represents the difference in depth from the zero reference position as a result of the application of the major load.
ASTM E18 “Standard Test Methods for Rockwell Hardness of Metallic Materials”
ISO 6508 “Metallic materials — Rockwell hardness test”
ASTM D785 “Standard Test Method for Rockwell Hardness of Plastics and Electrical Insulating Materials”
● Measuring the Rockwell hardness of soft metal materials such as ferrous and non-ferrous metals;
● Measuring the Rockwell hardness of high-hardness alloy materials such as cemented carbide;
● Measuring the Rockwell hardness of heat-treated materials such as quenched and tempered metals;
● Measuring the Rockwell hardness of certain non-metallic materials such as plastics and bakelite.
● Measure the surface Rockwell hardness of soft metal materials such as ferrous and non-ferrous metals;
● Measure the surface Rockwell hardness of metals after surface treatment (carburizing, nitriding, electroplating, etc.);
● Measure the surface Rockwell hardness of materials after heat treatment such as quenching and tempering;
● Measure the surface Rockwell hardness of high-hardness alloy materials such as cemented carbide;
● Measure the surface Rockwell hardness of certain non-metallic materials such as plastics and hardboard.
Main Technical Specification
| Model | HRS-150CM / HRS-150 |
| Initial testing force | 98.07N (10Kg) tolerance: ±2.0% |
| Total test force | 588.4N(60Kg), 980.7N(100Kg), 1471N(150Kg) ±1.0% |
| Measuring scales | HRA/HRBW/HRC/HRD/HREW/HRFW/HRGW/HRHW/HRKW/HRLWHRMW/HRPW/HRRW/HRSW/HRVW |
| Conversion scales | HV/HK/HBW/HRA/HRBW/HRC/HRDHRFW/HR15N/HR30N/HR45N/HR15T/HR30T/HR45T |
| Indenter | Diamond Rockwell pres sφ1.5875mm ball indenter φ3.175mm ball indenter (optional) |
| Hardness indication | Large screen touching screen |
| Duration time | 1-60S |
| Data output | USB2.0 |
| Printer | Built-in micro printer |
| Max. height of test specimen | 210mm |
| Max. width of test specimen | 173mm |
| Dimensions | 520×230×750mm |
| Weight | 85Kg |
| Power supply | AC 220V, 50-60HZ, 20W |
Main accessories
| Item | Quantity |
| Casting Main Frame | 1 set |
| 120 Diamond cone penetrator | 1 pc |
| Dia. 1.5875mm steel ball penetrator | 1 pc |
| Rockwell standardized block | 3 pcs |
| Large flat anvil | 1 set |
| Small flat anvil | 1 set |
| V-notch anvil | 1 set |
| Lever | 1 set |
| Power cable | 1 pc |
| Dustproof cover | 1 pc |
| Fuse 2A | 2 pcs |
| A, B, C weights | 1 set |
| Documents (Manual, packing list, certificate) | |
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