Information on the most widely used ASTM standards within the materials testing industry
Model: HR-150DT, HRM-45DT
Model:
HR-150DT Motorized Rockwell Hardness Tester
HRM-45DT Motorized Superficial Rockwell Hardness Tester
Motorized Rockwell/Superficial Rockwell Hardness features an attractive design and easy operation. It can measure the Rockwell and Superficial Rockwell hardness of ferrous and non-ferrous metals.
General Introduction
Model: HR-150DT Motorized Rockwell Hardness Tester
HRM-45DT Motorized Superficial Rockwell Hardness Tester
Motorized Rockwell/Superficial Rockwell Hardness features an attractive design and easy operation. It can measure the Rockwell and Superficial Rockwell hardness of ferrous and non-ferrous metals.
Key Features
1), High measuring accuracy, reliable performance and wide applicable fields;
2), By adopting the motor driven automatic loading and unloading technique, this thoroughly eliminates human error in the operations.
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 | HR-150DT | HRM-45DT |
| Initial testing force | 98.07N (10Kg) | 29.42N (3Kg) |
| Total test force | 588.4N(60Kg) 980.7N(100Kg), 1471N(150Kg) | 147.1N(15Kg), 294.2N(30Kg), 441.3N(45Kg) |
| Hardness indication | Dial display | |
| Duration time | 0-60S | |
| Max. height of test specimen | 200mm (enlarge to 380mm available) | |
| Max. width of test specimen | 165mm | |
| Dimensions | 520×215×700 mm | |
| Weight | 65Kg | 65kg |
| Power supply | AC 220V, 50-60HZ | |
| Standard Accessories | HRB, HRC standard hardness blocks, , Diamond Rockwell hardness indenter, ∮1.5875mm ball indenter | HRB, HRC standard hardness blocks, , Diamond Rockwell hardness indenter, ∮1.5875mm ball indenter |
| Testing table (big, medium, “V”), Power cord | ||
| Optional Accessories | ∮3.175mm, ∮6.35mm, ∮12.7mm Steel Ball Indenter | |
Main accessories
Diamond Rockwell Indenter,
Diameter 1.5875mm Hard Alloy Steel Ball Indenter,
Large Testing Table,
Medium Testing Table and V-shaped Testing Table,
Weight (A, B, C),
HRC and HRB Hardness Blocks
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