Information on the most widely used ASTM standards within the materials testing industry
Model: WDW-100Y/ WDW-200Y / WDW-300Y (100 ~300KN)
Bench-top electronic tensile testing equipment is a compact, high-precision material testing solution engineered for low-to-medium load (0.1N–50kN, typical mainstream range 2N–20kN) tensile, compression, peeling, tearing, and bending tests . Designed to fit standard laboratory workbenches, it replaces bulky hydraulic systems with an AC servo motor + precision ball screw drive system, delivering stepless speed adjustment and closed-loop control of force, displacement, and strain.
Unlike floor-standing industrial testers, its lightweight (150–200kg for small models) and compact footprint (1–2㎡) make it ideal for R&D labs, quality control (QC) departments, educational institutions, and small-batch production facilities. It excels in measuring mechanical properties of small-sized specimens (e.g., thin films, wires, plastic pellets, textile fibers) with high precision, complying with international standards such as ASTM D638 (plastics), ISO 6892-1 (metals), and GB/T 1040 (polymer materials) .
General introduction
Bench-top electronic tensile testing equipment is a compact, high-precision material testing solution engineered for low-to-medium load (0.1N–50kN, typical mainstream range 2N–20kN) tensile, compression, peeling, tearing, and bending tests . Designed to fit standard laboratory workbenches, it replaces bulky hydraulic systems with an AC servo motor + precision ball screw drive system, delivering stepless speed adjustment and closed-loop control of force, displacement, and strain.
Unlike floor-standing industrial testers, its
lightweight (150–200kg for small models) and compact footprint (1–2㎡)
make it ideal for R&D labs, quality control (QC) departments,
educational institutions, and small-batch production facilities. It
excels in measuring mechanical properties of small-sized specimens
(e.g., thin films, wires, plastic pellets, textile fibers) with high
precision, complying with international standards such as ASTM D638
(plastics), ISO 6892-1 (metals), and GB/T 1040 (polymer materials) .
Core Advantages of Bench-Top Electronic Tensile Testing Equipment
Compared to hydraulic tensile testers (which are optimized for 50kN+ heavy loads), bench-top electronic models offer unmatched advantages in low-load, high-precision scenarios:
(1) Superior Precision & Stability
Accuracy Class: 0.5 level (±0.5% of reading) vs. 1 level (±1% of reading) for hydraulic models, enabling stable control of micro-loads (≥1N) and small displacements (resolution 0.001mm) .
No Environmental Interference: Eliminates load fluctuations caused by hydraulic oil compressibility, temperature changes, or seal leakage—critical for testing fragile materials (e.g., biomaterials, microelectronic components).
(2) Cost-Efficiency & Low Maintenance
Energy Saving: Consumes only 1–5kW (vs. 5–20kW for hydraulic testers), cutting electricity costs by up to 75% over a 10-year lifecycle .
Oil-Free Operation: No hydraulic oil, filters, or seal replacements required; maintenance is limited to periodic lubrication of ball screws (total lifecycle maintenance cost 20–30% lower than hydraulic models) .
Low Failure Rate: Simplified mechanical structure reduces risks of oil circuit blockage or leakage—common issues with hydraulic systems.
(3) Space & Usability Benefits
Compact Design: Occupies 1–2㎡ of bench space (vs. 3–5㎡ for hydraulic testers with separate hydraulic stations); easy to install, relocate, or integrate into cleanrooms/laboratories.
Quiet Operation: Runs at ≤60dB (conversational volume) vs. ≥75dB for hydraulic pumps, meeting laboratory noise standards.
Fast Response: Stepless speed range (0.001–500mm/min) with instant speed adjustment (hydraulic models have slow response due to system inertia) .
(4) Flexible Automation
Intuitive software enables one-click test setup, real-time data capture, and automatic calculation of key metrics (tensile strength, elongation, Young’s modulus).
Supports integration and remote monitoring—eliminating manual data recording errors common with hydraulic testers.
Working Principle:
UTMs operate through a systematic process:
1, Force Application: A precisely controlled drive system applies tensile or compressive force to a specimen
2, Deformation Measurement: High-precision sensors record the specimen's response
3, Data Analysis: A computer system processes data to calculate key mechanical properties
Key Features
Load frame and driven type
Compact construction applies aluminum alloy profile load frame cover structure;
Frame are proof loaded to 200% of capacity, with concentric arrangement of the drive lead screw and crosshead guide which assure high accuracy and strong reliability;

Leading screw AC servo motor
Top and middle crosshead processed through shot blasting & baking paint technology, appearance, no corrosion and no need lubrication oil maintenance.
Adopt Japan Panasonic/FUJI AC servo motor and driving system, ensure transmission and moment of force stable;
Adopt Circular Arc Profile Synchronous Belt Transmission, eliminate dual direction clearance, prolongs the life of synchronous belt;
Multiple load cell in one machine available.
Advanced USA Vishay celtron load cell ensure the force measuring accuracy and repeatability, Overload capacity 150%.
Compatibility concept for continuous component expansion;
Grip and test fixture
Manual, hydraulic, pneumatic tensile test fixture available;
Removable grip-jaws can be changed rapidly to meet variable wider applications in tension test.
Versatile test fixture like peeling, shear, bending, flexure, tear, burst, puncture, compression test for kinds of material;
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Bolts tensile fixture | Metal shear test | Peeling test fixture |
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Webbing belt tension test | Thin wire twisting tensile grip | Rubber tensile fixture |
Security function
Sensor of position limitation switch;
Emergency stop switch;
Hardware driving system overload protection, over voltage, current protection;
Software over load protection.
Control system, Software
Based on full digital STC8800 measuring and control card; Data collection system use 4 channel of high accuracy 24 digit A/D conventer;
Real time load, deformation, corsshead displacement, test precess four kind close loop control;
Resolution can upto 1/500000, full range without step;
Level authorization management function: to improve sftware and data security, can set different password to realize several class authorization management. Different user with different right to operate the machine, avoiding unexpected mistake because human error.
PC control system, with advantage of high integration, reliable performance, easy adjusment etc. can real time collect test data, on-time display test curve, test data file can be saved as ACCESS and SQL server, convenient for customer's data resource storage.
Automatically generate the testing report; the testing report can be displayed and printed, also it can be export in Excel/Access Format. Also, the user can edit the report format as requirement in report template;
Result recall function: after the test and saved, customer can open the test data and re-analysis at any time.
Results compare: observe several curve at same time, can fold curve or portion enlarge to analyze and compare sample characters.
Load~Time, Load~displacement, Displacement~time etc. curve smoothly switch, display test data, save, analysis and print.


Main interface for test and result display

Multiple load cells

Test Report/Batch test report/ Curve superposition for comparison
USB Hand remote controller with magnetic backplate
Test data zeroing, test operation, speed change, adjust crosshead up and down moving, display the displacement.
Non fumigation wooden package (2620*1200*970mm)

Force Measurement
Typical accuracy: ±0.5% of reading (Class 0.5) down to 1/1000th of full capacity
Resolution: Up to 1/500,000 of full scale, detecting minute force changes
Load cells: High-precision strain gauge sensors calibrated to ISO 7500-1 standards
Displacement & Deformation
Position repeatability: As high as ±0.001mm
Extensometer accuracy: ±0.5% with resolutions down to 1μm
Non-contact options: Laser or video extensometers for fragile materials or high-elongation tests
Data Acquisition
Sampling rates: Up to 5kHz for capturing rapid material behavior
Precision control: Speed accuracy of ±0.1% ensures consistent testing conditions
Main technical specification
| Load capacity | 5KN/10KN/20KN/50KN (0.4%--100%) |
| Frame proof load capacity | 150% of rate capacity |
| Multiple load cell in one machine function | YES |
| Load Accuracy | Class 0.5 according ISO7500-1 |
| Load cell overload capacity | 150% of rate capacity |
| Load measuring resolution | 1/500000 FS, stepless |
| Stiffness of frame | 0.024mm/t |
| Position / displacement resolution | 0.001mm |
| Crosshead travel | 1200mm |
| Tensile test space | 700mm |
| Compression test space | 800mm |
| Effective testing width (Clearance between columns) | 500mm |
| Standard tensile test fixture | Manual wedge type |
| Wedge tensile fixture Flat specimen range | 0-14mm |
| Wedge tensile fixture Flat specimen range | Φ4-Φ14mm |
| Compression platen diameter | Φ100mm |
| Testing speed range | 0.001 mm/min~500 mm/min, stepless, adjustable arbitrarily (Optional max. 1000mm/min) |
| Weight | 480kg |
| Standard Power | 220/110V, 50/60HZ, 1 phase, 0.75Kw |
| Dimensions | 860*700*1750mm |
| Analysis software | SmartTest English version |
| Working system | MS Win10 / Win11 |
| Frame structure | Standard: Dual test spaceOptional: Single test space |
Specifications:Load measurement accuracy: +/- 0.5% of applied load from 2% to 100% capacity; extended range down to 1% capacity with accuracy of 1% of applied load Position measurement accuracy: +/- 0.01% of reading or 0.001 mm, whichever is greater Deformation measuring accuracy and measuring range: 2%~100%FS, ≤±0.5% Strain measurement accuracy: +/- 0.5% of indicated load from 0.2% to 100% capacity FS Speed accuracy: ±1%(0.001~10mm/min),±0.5%(10~500mm/min) Operating temperature range: 0 to 38 degrees C(32 to 100 degrees F) Storage temperature range: -10 to 45 degrees C (14 to 115 degrees F) Humidity range: 10% to 90% non-condensing, wet bulb method Power: standard optional voltages110/220VAC, 50-60 Hz; power must be free of spikes and surges exceeding 10% of the nominal voltage. Notes: 1. Load weighing system meets or exceeds the requirements of the following standards: ASTM E4, EN 10002-2, BS 1610, DIN 51221, ISO 7500-1. UNITEDTEST recommends that systems are verified at installation in accordance with ASTM E4 and ISO 75001. 2. Strain measurement system meets or exceeds the requirements of the following standards: ASTM E83, EN 10002-4, BS 3846 and ISO 9513. 3. These models conform to all relevant European CE Notes: Dual test space structure: Tensile test at upside of crosshead, Compression and bending test at downside of crosshead. Tensile, Compression and bending test all done at downside of crosshead (the three type test fixture interchange for different test). | |
Main accessories (Standard delivery with machine)
| High Stiffness Frame: | 1 set |
| Servo driving system: (Panasonic) Servo motor: (Panasonic) | 1 set |
| Load cell: (Celtron high precision load cell) | 1 set |
| Decelerator and deceleration system | 1 set |
| Leading screw: | 1 set |
| Wedge tensile test fixture | 1 set |
| Compression test fixture(Φ100mm) | 1 set |
| Professional testing software(FastTest, English version) | 1 set |
| Bending test fixture | 1 set |
| Computer | 1 set |
| Printer | 1 set |
| Documents (Manual, packing list, certificate) | |
UNITEDTEST Webbing tensile fixture. Nickle coating.
UNITEDTEST optional 800mm large extension extensometer.
UNITEDTEST manual wedge tensile fixture, upper clamper. Nickle coating.
UNITEDTEST optional 800mm large extension extensometer.
UNITEDTEST manual wedge tensile fixture, lower clamper. Nickle coating.
Related auxiliary products you may interested
Frequently Asked Questions
Dual space and Single space difference
UnitedTest offer two kinds frame structure for the test space, dual test space and single test space.
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Advantage of dual space structure: | Advantage of dual space structure: For some user, only or frequently to do tensile test, the tensile grips at lower place, easy for operation to install the specimen. (For some tester like 200KN and 300KN, frame is higher like 2600mm, the tensile grips at upper place is not very suitable to clamping the specimen) |
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