Rockwell Hardness Tester HR-150A
Category：Hardness Tester
Introduction
The HR-150A Rockwell Hardness Tester is a manual, precision hardness testing instrument designed for reliable and durable operation without electrical control. It measures HRA, HRB, and HRC scales, suitable for a wide range of materials from soft metals to high-hardness alloys, steels, and carbides. Featuring optimized mechanical design, adjustable hydraulic damping, and direct dial reading, it provides accurate hardness values with high efficiency. The tester accommodates specimens up to 170 mm in height and delivers consistent results in production and quality control environments.
Application
HRA: Uses a 60 kg load and a 120° diamond cone indenter pressed into the material. The hardness value is calculated based on the indentation depth. Suitable for very hard materials such as cemented carbide, shallow surface-hardened steel, thin steel sheets, and carbides.
HRB: Uses a 100 kg load and a 1.5875 mm diameter steel ball indenter pressed into the material. The hardness value is calculated based on the indentation depth. Suitable for softer materials such as mild steel, annealed steel, normalized steel, malleable cast iron, brass, bronze, and aluminum alloys.
HRC: Uses a 150 kg load and a 120° diamond cone indenter pressed into the material. The hardness value is calculated based on the indentation depth. Suitable for very hard materials such as quenched and low-temper tempered carbon steel, alloy steel, tool/mold steel, chilled cast iron, and titanium alloys.
Standards
(1) GB/T 230.2 — Metallic Materials — Rockwell Hardness Test — Part 2: Verification and Calibration of Testing Machines
(2) ISO 6508-2 — Metallic Materials — Rockwell Hardness Test — Part 2: Verification and Calibration of Testing Machines
(3) ASTM E18 — Standard Test Methods for Rockwell Hardness of Metallic Materials
Parameters
| Technical Parameter | Specification |
| Measurement Range | 20–95 HRA, 10–100 HRB, 10–70 HRC |
| Initial Test Force | 10 kgf (98.7 N) |
| Total Test Force | 588.4 N, 980.7 N, 1471 N (60, 100, 150 kgf) |
| Indenter Type | Rockwell diamond indenter, φ1.588 mm steel ball indenter |
| Test Space – Maximum Specimen Height | 170 mm |
| Test Space – Distance from Indenter Center to Machine Wall | 135 mm |
| Test Force Application | Manual |
| Hardness Reading | Dial gauge |
| Hardness Resolution | 0.5 HR |
| Measurement Scales | HRA, HRB, HRC |
Features
Optimized mechanical structure design.
Manual mechanical testing, no electrical control required; accurate, reliable, durable, and highly efficient.
Direct dial reading, standard HRA, HRB, and HRC scales included (other Rockwell scales optional).
Equipped with a precision hydraulic buffer, with adjustable loading speed.
Strong adaptability to working environments, widely suitable for quality control in production sites.
Accessories
| Name | Quantity |
| Main Unit | 1 set |
| 1/16” Steel Ball Indenter | 1 pc |
| Small Flat Anvil | 1 pc |
| Rockwell Hardness Block 20–30 HRC | 1 pc |
| Rockwell Hardness Block 60–70 HRC | 1 pc |
| Rockwell Hardness Block 90–95 HRB | 1 pc |
| Dust Cover | 1 pc |
| User Manual | 1 copy |
| Diamond Cone Indenter | 1 pc |
| Large Flat Anvil | 1 pc |
| V-Type Anvil | 1 pc |
| Rockwell Hardness Block 40–50 HRC | 1 pc |
| Rockwell Hardness Block 80–90 HRA | 1 pc |
| Screwdriver | 1 pc |
| Certificate of Conformity | 1 copy |
| Packing List | 1 copy |
FAQ
(1) What is this product?
It is a manual Rockwell hardness tester designed to measure HRA, HRB, and HRC hardness values of metallic materials.
(2) What is this product used for?
It is used to evaluate material hardness for quality control, production inspection, and laboratory testing.
(3) Why is this product important?
Hardness testing is essential for verifying heat treatment quality, material strength, and product consistency.
(4) What industries is this product suitable for?
It is suitable for metallurgy, machinery manufacturing, automotive, aerospace, metal processing, and quality inspection laboratories.
(5) What types of this product are available?
Available types include manual Rockwell testers, electric Rockwell testers, and fully automatic digital Rockwell hardness testing systems.
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