Microcomputer-controlled machine for tensile stress relaxation tests of metals, plotting relaxation curves and extrapolating 1000-hour results.
Overview
Used for tensile stress relaxation tests of metals. It plots the curves of remaining force/relaxation rate vs. time and temperature vs. time, and extrapolates 1000-hour relaxation performance. Loading rate is freely settable from 1005000N/s. It automatically calculates relaxation rate and prints complete reports; force and displacement are digitally calibrated; results can be stored and reviewed; coordinates auto-adjust to always display the full curve; parameters are auto-saved and recalled; after test, data points can be picked on the curve with the mouse.
Applications
• Road and highway engineering laboratory testing
• Construction material quality control and acceptance
• Research and teaching laboratories
• Third-party inspection and certification bodies
Features
• Large LCD display showing real-time test parameters and results
• Built-in thermal printer for immediate test record output
• Robust construction suitable for both laboratory and field use
• Compliant with relevant Chinese and international testing standards
• Complete with calibration certificate and operation manual
Technical Specifications
| Item | Specification |
| Max force | 200/300/400/500kN |
| Force range | 8–200 / 12–300 / 16–400 / 20–500kN |
| Relative error | ±1% |
| Force resolution | 7/10/12/15N |
| Displacement error | ±0.5% |
| Loading rate | 100–5000N/s (arbitrary) |
| Screw stroke | 100mm |
| Tensile gap | 1200/1850 or 1200/2400mm |
| Power | 0.75kW AC220V / 1.5–2.0kW AC380V |
| Weight | 1200 / 2200kg |
Standards
GB/T 16826, ASTM E4, ISO 6892
Standard Delivery
• Main instrument unit
• Power cable
• Operation manual
• Spare parts kit
FAQ
Q1: What standards does the Tensile Stress Relaxation Testing Machine comply with?
A1: The Tensile Stress Relaxation Testing Machine is designed and manufactured in accordance with relevant Chinese national (GB) and transport industry (JTG) standards, as well as applicable ASTM and AASHTO international standards. A calibration certificate traceable to national standards is provided with each unit.
Q2: How often should the Tensile Stress Relaxation Testing Machine be calibrated?
A2: We recommend annual calibration by authorized technicians or by iRoad after-sales service center. For high-frequency laboratory use, semi-annual calibration is advised. The instrument is supplied with a factory calibration certificate.
Q3: What is the lead time and do you provide training?
A3: Standard units are usually shipped within 7-15 working days. Custom configurations may require 20-30 days. iRoad provides on-site installation, commissioning and operator training for major equipment; remote video guidance is available for standard laboratory instruments.
Overview
Used for tensile stress relaxation tests of metals. It plots the curves of remaining force/relaxation rate vs. time and temperature vs. time, and extrapolates 1000-hour relaxation performance. Loading rate is freely settable from 1005000N/s. It automatically calculates relaxation rate and prints complete reports; force and displacement are digitally calibrated; results can be stored and reviewed; coordinates auto-adjust to always display the full curve; parameters are auto-saved and recalled; after test, data points can be picked on the curve with the mouse.
Applications
• Road and highway engineering laboratory testing
• Construction material quality control and acceptance
• Research and teaching laboratories
• Third-party inspection and certification bodies
Features
• Large LCD display showing real-time test parameters and results
• Built-in thermal printer for immediate test record output
• Robust construction suitable for both laboratory and field use
• Compliant with relevant Chinese and international testing standards
• Complete with calibration certificate and operation manual
Technical Specifications
| Item | Specification |
| Max force | 200/300/400/500kN |
| Force range | 8–200 / 12–300 / 16–400 / 20–500kN |
| Relative error | ±1% |
| Force resolution | 7/10/12/15N |
| Displacement error | ±0.5% |
| Loading rate | 100–5000N/s (arbitrary) |
| Screw stroke | 100mm |
| Tensile gap | 1200/1850 or 1200/2400mm |
| Power | 0.75kW AC220V / 1.5–2.0kW AC380V |
| Weight | 1200 / 2200kg |
Standards
GB/T 16826, ASTM E4, ISO 6892
Standard Delivery
• Main instrument unit
• Power cable
• Operation manual
• Spare parts kit
FAQ
Q1: What standards does the Tensile Stress Relaxation Testing Machine comply with?
A1: The Tensile Stress Relaxation Testing Machine is designed and manufactured in accordance with relevant Chinese national (GB) and transport industry (JTG) standards, as well as applicable ASTM and AASHTO international standards. A calibration certificate traceable to national standards is provided with each unit.
Q2: How often should the Tensile Stress Relaxation Testing Machine be calibrated?
A2: We recommend annual calibration by authorized technicians or by iRoad after-sales service center. For high-frequency laboratory use, semi-annual calibration is advised. The instrument is supplied with a factory calibration certificate.
Q3: What is the lead time and do you provide training?
A3: Standard units are usually shipped within 7-15 working days. Custom configurations may require 20-30 days. iRoad provides on-site installation, commissioning and operator training for major equipment; remote video guidance is available for standard laboratory instruments.
