YANRUN HRS-150M Touchscreen Digital Rockwell Hardness Tester
| Brand | YANRUN |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | Rockwell Hardness Tester |
| Model | HRS-150M |
| Measurement Range | HRA: 20–88, HRB: 20–100, HRC: 20–70 |
| Total Test Forces | 588 N (60 kgf), 980 N (100 kgf), 1471 N (150 kgf) |
| Maximum Specimen Height | 180 mm |
| Testing Zone Dimensions | 200 mm (H) × 160 mm (D) |
| Indentation Depth Resolution | 0.1 HR |
| Initial Test Force | 98.07 N (10 kgf) |
| Dwell Time Adjustment | 0–60 s (1 s increments) |
| Compliant Standards | GB/T 230.2, JJG 112 |
Overview
The YANRUN HRS-150M Touchscreen Digital Rockwell Hardness Tester is a fully automated benchtop hardness testing system engineered for precision, repeatability, and compliance in industrial quality control and metrology laboratories. It operates on the principle of the Rockwell hardness test—applying a minor initial load to seat the indenter, followed by a major load to produce permanent plastic deformation—and measures hardness based on the depth differential between the two loading stages. The instrument supports 13 standardized Rockwell scales (HRA, HRB, HRC, HRD, HRE, HRF, HRG, HRH, HRK, HR15N, HR30N, HR45N, HR15T, HR30T, HR45T), enabling consistent evaluation across ferrous and non-ferrous metals—including hardened steels, aluminum alloys, copper, brass, and case-hardened components. Its microprocessor-controlled electro-mechanical actuation eliminates manual force application variability, while real-time digital readout ensures traceable, operator-independent results aligned with ISO 6508-1 and ASTM E18 requirements.
Key Features
- 7-inch full-color capacitive touchscreen interface with intuitive menu navigation—no physical buttons or mechanical dials required
- Rigid cast-iron frame with vibration-damped base, engineered to minimize deflection under maximum 150 kgf load and ensure long-term geometric stability
- Integrated high-resolution optical encoder system for precise indentation depth measurement with 0.1 HR resolution
- Automated dwell time control (0–60 s, adjustable in 1-second increments) compliant with GB/T 230.2 and ASTM E18 timing protocols
- Built-in thermal-stabilized load cell and closed-loop force feedback for ±1% accuracy across all test forces (60/100/150 kgf)
- Onboard thermal printer for immediate hard-copy output of test reports including date/time stamp, scale used, load sequence, and hardness value
- Modular indenter mounting system supporting rapid interchange of diamond cone (120° apex angle, 0.2 mm tip radius) and tungsten carbide ball (1.5875 mm diameter) indenters
Sample Compatibility & Compliance
The HRS-150M accommodates specimens up to 180 mm in height and 160 mm in lateral dimension, with a maximum weight capacity of 50 kg on the anvil. Standard anvil configurations include large flat, medium flat, and V-shaped anvils—enabling reliable testing of plates, bars, rods, and cylindrical parts. All hardness values are traceable to national standards via built-in calibration verification routines aligned with JJG 112 verification regulations. The instrument satisfies mandatory metrological requirements for factory inspection labs operating under ISO/IEC 17025, and its data integrity features—including immutable timestamped records and non-editable printouts—support GLP and GMP audit readiness. While not FDA 21 CFR Part 11–certified out-of-the-box, raw test logs can be exported via USB for integration into validated LIMS environments.
Software & Data Management
The embedded firmware provides direct access to cross-scale hardness conversions per ISO 18265 and ASTM E140, including Rockwell-to-Vickers (HV), Brinell (HBW), Knoop (HK), and superficial Rockwell equivalents. Test parameters (scale, load, dwell time, specimen ID) are stored in non-volatile memory for up to 500 test cycles. Data export is supported via USB port for CSV-formatted reports compatible with Excel, Minitab, and SPC software. No proprietary PC software is required; all configuration, calibration, and reporting functions are executed natively on the device. Firmware updates are delivered via USB flash drive and include version-locked calibration certificates to maintain metrological continuity.
Applications
- Quality assurance of heat-treated steel components in automotive and aerospace supply chains
- In-process verification of surface hardness after carburizing, nitriding, or induction hardening
- Batch acceptance testing of aluminum extrusions and copper alloy forgings per ASTM B632 and EN 10088
- Metrology lab verification of reference blocks certified to ISO 6508-3
- Failure analysis investigations requiring correlation between hardness profiles and microstructural features
- Educational use in materials science laboratories for standardized Rockwell methodology training
FAQ
Does the HRS-150M support automatic scale selection based on material type?
No—the operator must manually select the appropriate Rockwell scale per ASTM E18 or GB/T 230.2 guidelines. However, the interface prevents invalid scale/load combinations (e.g., HRC with 60 kgf).
Is third-party calibration certification available?
Yes—YANRUN provides optional NIST-traceable calibration certificates issued by CNAS-accredited laboratories, valid for 12 months.
Can the printer output be disabled for silent operation?
Yes—printing is user-configurable; test results remain visible on-screen and stored internally regardless of printer status.
What maintenance is required for long-term accuracy?
Annual verification using certified reference blocks and biannual cleaning of the indenter spindle and anvil surfaces with isopropyl alcohol are recommended per GB/T 230.2 Annex D.
Is the instrument suitable for testing thin sheet metal?
Yes—when using superficial scales (e.g., HR15N, HR30T) with appropriate backup support, specimens as thin as 0.8 mm may be tested provided minimum thickness criteria per ASTM E18 Table 1 are met.
