Abstract
The HST WAW300F is a 300kN electro-hydraulic single space servo universal testing machine for metallic materials: a top-mounted, bidirectional differential actuator runs tension and compression in one single space, a clearance-free four-column frame adjusts the test space with the actuator itself, and the hydraulic automatic wedge grip clamps round and flat specimens automatically. Control is a three closed-loop system (force, deformation, displacement) with constant force, constant displacement and constant extension switching smoothly among the three modes, on a Class 0.5 frame at ≤±0.5% load accuracy and 1/500,000 FS load resolution. Test results are calculated automatically and can be printed and exported, with the report format editable for Excel, Word or a company-branded template. The machine is conformed to test methods including ASTM E8, ASTM A370, ISO 6892-1 and BS 4449, with force value per ASTM E4, ISO 7500-1, EN 10002-2, BS 1610 and DIN 51221.
Key Takeaways
- 300kN max. load in a single space, four-column frame; tension and compression both run in the same zone, so one machine carries the whole metal program.
- Top-mounted bidirectional differential cylinder with a clearance-free structure; the actuator moves up and down to adjust the test space, 50-700mm tensile space and 530mm max. compression space.
- Class 0.5 (ISO 7500), load accuracy ≤±0.5% over 1-100% FS, load resolution 1/500,000 FS, displacement resolution 0.01mm.
- Hydraulic automatic clamp with wedge grip: round inserts Φ10-20mm and Φ20-32mm, flat inserts 0-15mm (15-30mm optional); a standard electronic extensometer (50mm gauge length) is included.
- Three closed-loop control (force, deformation, displacement) with constant force, constant displacement and constant extension, smoothly switched; max. piston rise 200mm/min.
- Full station standard: hydraulic power supply, Rexroth oil pump, ATOS servo valve, EDCH550 controller, handheld controller, HP computer, HP printer, HKtest software (English, other languages optional).
What the WAW300F is for
The machine is mainly used for the tensile test of metallic materials, and it is built so that compression work runs in the very same space:
- A bidirectional differential cylinder provides bidirectional control of tension and compression in one single space, with the top-mounted actuator applying the load from above.
- The clearance-free structure and the actuator moving up and down to adjust the test space offer easy operation and high efficiency.
- Closed loop control of constant force, constant displacement and constant extension, smoothly switching among them during the run.
- Test results are automatically calculated and can be printed and exported.
For a metal lab, a wire and rod plant, or a fasteners supplier running daily tensile batches, the value is that the tension specimens and the compression specimens meet on one frame, with one calibration and one software suite behind both.
One space, two directions: how the frame is built
- Single-space, single-zone design: all types of tests finish in one space, and the compact design is ergonomic and effectively reduces labor intensity.
- The top-mounted hydraulic double direction actuator applies a tensile or compressive load to the specimen; this design makes it easy to provide different stroke lengths and extended test openings to suit unique applications without costly customization.
- The main frame is full rigid and gap-free; when the tensile specimen breaks, the testing machine has no impact on the ground, and the host has high resistance to pull and pressure.
- Four-column construction with superior axial and lateral stiffness; the chrome plated columns are easy to clean and built for the longest life.
- The double acting crossbeam quickly accommodates specimens of varying lengths; with additional length of columns, the maximum testing space is adjustable to meet extra length specimens.
- Space: 50-700mm tensile space, 530mm max. compression space, 550mm between the columns, 650mm piston stroke.
- Safety is layered: stroke protection by machinery and computer double protection against over-set, force protection by system setting, and the emergency stop device for handling emergencies.
How the wedge grip changes specimen set-up
- The clamping method is a hydraulic automatic clamp with wedge grip - the jaws close on the specimen automatically, so a batch of round bars does not wait on hand-clamped grips between tests.
- Round inserts: Φ10-20mm and Φ20-32mm; flat inserts: 0-15mm, with 15-30mm as an option. The compression grip is a Φ160mm plate.
- The hand-held controller runs the rise and fall of the moving beam and the cylinder, and the clamping and loosening of the jaws, at arm's reach.
- The standard electronic Extensometer (gauge length 50mm, deformation 25mm) reads the strain; options add the USA Epsilon 3542 series extensometer, the MFL-300B/500B extensometer (EN 10002, Class 0.5, stroke 300/500mm), and the Mercury RT video extensometer for non-contact 2D and 3D measurement.
- Optional grips extend the range: the hydraulic side automatic grip for the same round and flat specimen sizes, and the bolt tensile grip sized to customer requirements.
What the HKtest software and control system keep for you
- The EDCH550 controller runs a three closed-loop (force, deformation, displacement) control system, and the loading rate runs from 0.02% to 2% FS/s at up to 200mm/min piston rise.
- HKtest software in English, with other languages optional; test results are calculated automatically and can be printed and exported.
- The test report outputs to Excel, Word or a template test report, editable to show the test person, test standard, test curve, test max load, your company logo and company name.
- The hydraulic side is a full station: hydraulic power supply (max. pressure 35MPa), the Le-hydrauliX oil pump (a brand of Rexroth), the ITALY ATOS V31 servo valve, US SUN plug valves that reduce the probability of oil leakage in the hydraulic system, plunger pumps at 3.6L/min x 2, the integrated valve block with a 10μm precision oil filter, the pressure gage for system and clamping pressure, and three magnetic exchange valves at 31.5MPa.
- Force is read by the double flange tensile-compression dual direction load sensor - a structure the sheet notes keeps the force value free of the unfavorable factors that oil pressure sensors can bring - and displacement by the 2000 P/R sensor.
- The three-sided protective cover (aluminum profile frame and PC acrylic board) guards the working zone while the test runs.
HST WAW300F specifications
- Max. load capacity: 300kN
- Structure: single space, four column
- Accuracy class: Class 0.5 (ISO 7500)
- Testing load accuracy: ≤±0.5%
- Test force range: 1% - 100% FS
- Test force resolution: 1/500,000 FS
- Deformation measuring range: 1% - 100% FS
- Deformation accuracy: ±0.5%
- Deformation resolution: 1/500,000 FS
- Displacement resolution: 0.01mm
- Maximum speed of piston rise: 200mm/min
- Test force loading rate range: 0.02% - 2% FS/s
- Tensile space: 50-700mm
- Max. compression space: 530mm
- Space between columns: 550mm
- Piston stroke: 650mm
- Clamping method: hydraulic automatic clamp with wedge grip (round Φ10-20mm, Φ20-32mm; flat 0-15mm, optional 15-30mm)
- Compression plate: Φ160mm
- Load frame dimensions: 780 x 630 x 2750mm
- Control console dimensions: 1200 x 680 x 2750mm
- Weight: approx. 1500kg
- Power: 3 phase, 380VAC±10%, 50Hz
- Operating temperature: 0 to +38 deg C (+32 to +100 deg F)
- Humidity: 10% to 90% non-condensing
- Notes: extra wide and/or extra height frames are available; the power supply system is completely customizable
Selection guide: where the WAW300F fits
- Your program is metallic tensile work - wire, rod, bar, fastener - and the same bench should run compression specimens: the single space design finishes all test types in one zone, and the double acting crossbeam keeps varying specimen lengths inside it.
- Your specimens run long: the tensile space starts at 50-700mm, and the maximum testing space is adjustable with additional length of columns.
- Your lot includes extra-long items such as pretested concrete strand: optional extra height load frames are available to accommodate them.
- In the HST catalog, the WAW300F sits on the single space tensile testing machine page, in the hydraulic universal testing machine family.
- If your lab also runs electronic universal frames for lighter specimens, the Material Tensile Compression Tester is the electronic sibling of that duty.
Total cost of ownership
- Power is 3 phase 380VAC±10% at 50Hz - an ordinary three-phase industrial circuit; the hydraulic power supply runs at a max. pressure of 35MPa.
- The 780 x 630 x 2750mm load frame at about 1500kg, with the 1200 x 680 x 2750mm control console, is a floor-standing two-piece station; the machine is rated for 0 to +38 deg C at 10% to 90% non-condensing humidity.
- The precision oil filter is built into the hydraulic integrated valve block, and the US SUN plug valves are selected to improve the stability of the hydraulic system.
- The HP computer and HP printer are standard, and the standard electronic extensometer is already on the list, so the first tensile batch runs out of the box.
Standards and compliance
Test methods the machine conforms to:
- ASTM E8 - tension testing of metallic materials
- ASTM A370 - mechanical testing of steel products
- ISO 6892-1 - metallic materials, tensile testing
- BS 4449 - tensile testing of metallic materials
Force value:
- Load meets or exceeds ASTM E4, ISO 7500-1, EN 10002-2, BS 1610 and DIN 51221; the accuracy class is Class 0.5 per ISO 7500.
- Strain measurement meets or exceeds ASTM E83, ISO 9513, BS 3846 and EN 10002-4.
- The sheet also lists additional conformance items (ASTM 615, ISO 146303, ISO 156301) without full designation; those are not restated here.
- The product sheet does not include certification pages for this model, so no certification claims are made here.
Frequently Asked Questions (FAQ)
1. What is the max. load capacity of the HST WAW300F?
300kN, on a single space, four-column frame with a top-mounted, bidirectional hydraulic actuator.
2. Can it run both tension and compression?
Yes - the bidirectional differential cylinder provides bidirectional control of tension and compression in one single space; the tensile space is 50-700mm and the max. compression space is 530mm.
3. How accurate is the measurement?
Class 0.5 per ISO 7500, with load accuracy ≤±0.5% over 1-100% FS, load resolution 1/500,000 FS, deformation accuracy ±0.5%, and displacement resolution 0.01mm.
4. Which specimens does the grip take?
The hydraulic automatic wedge grip takes round specimens of Φ10-20mm and Φ20-32mm and flat specimens of 0-15mm (15-30mm optional); the compression grip is a Φ160mm plate.
5. What comes with the machine?
The standard station: host with double direction actuator, main cylinder, hydraulic power supply, Rexroth oil pump, ATOS servo valve, SUN plug valves, plunger pumps, integrated valve block, pressure gage, magnetic exchange valves, wedge tensile grip, compression grip, dual direction Load Cell, displacement sensor, three-sided protective cover, EDCH550 controller, hand-held controller, HKtest software, HP computer, HP printer and the 50mm-gauge electronic extensometer.
HST GROUP – Focus on Material Test. Kindly contact HST Group via WhatsApp at +86 15910081986.
