Creep & sustained load
ASTM F519 Creep Testing Machine | VTR-13-050
Dead-weight lever arm system for hydrogen embrittlement and long-term creep tests
PHOTO: Front three-quarter view with safety enclosure and branding visible
Standards compliance
- ASTM F519
- ISO 204
- ASTM E139
- EN 2002-005
- ASTM E1457
Creep testing machine for regulated, long-duration programmes
The Vector VTR-13-050 creep testing machine is a heavy-duty dead-weight lever arm platform for demanding long-term mechanical tests. It is designed for alignment with ASTM F519, ISO 204, ASTM E139, EN 2002-005, and ASTM E1457 — covering creep, stress rupture, relaxation, crack growth, and hydrogen embrittlement workflows in one modular, floor-standing installation.
It operates from 50 kN to 200 kN and supports sustained programmes up to 100,000 hours. Typical users include aerospace landing gear and fastener supply chains, oil and gas pressure equipment, power generation, and structural alloy qualification where constant-load integrity is safety-critical.
Creep testing machine behaviour: why time and constant load matter
Creep is time-dependent deformation under constant stress, often at elevated temperature. A creep test holds the specimen under dead load while an extensometer across the gauge records elongation over time — revealing behaviour that short tensile runs cannot predict.
Sectors such as aerospace, power generation, and chemical processing rely on these data for turbine blades, boiler tubes, heat exchangers, and similar components under prolonged thermal stress.
A gravity-based dead-weight lever arm improves stability versus stress-controlled electromechanical frames: if mains power is lost during a multi-thousand-hour run, servo-controlled load can decay, whereas dead weight continues to apply the calibrated force.
Hydrogen embrittlement and ASTM F519 on this creep testing machine
Hydrogen embrittlement is the loss of ductility and onset of cracking after hydrogen uptake — common after plating, pickling, welding, or cathodic protection. High-strength steels in oil and gas, aerospace, and automotive structures are especially exposed.
ASTM F519 standardises sustained-load testing of high-strength steels to assess hydrogen embrittlement risk from plating and post-plating processes using notched specimens under long-term uniaxial tension.
The VTR-13-050 is arranged for the 200-hour sustained load protocol, with configuration options to run multiple specimen batches in parallel so qualification labs can protect throughput.
Creep testing machine: key capabilities
50–200 kN force range
Covers smaller notched tensile coupons for HE screening through larger coupons for high-temperature creep and stress rupture. Dead weight and pre-tensioned spring give smooth, continuous force without motor drift over long dwells.
Dead-weight and spring load path
Lever-arm mechanical advantage holds constant load with calibrated masses — no powered actuator in the load loop. Wear-resistant flexible joints preserve alignment as the specimen elongates; automatic end-of-test capture logs rupture time.
Five major standards, one frame
ASTM F519, ISO 204, ASTM E139, EN 2002-005, and ASTM E1457 are addressed in the platform design — reducing duplicated capital equipment when your quality system references more than one method.
Optional high-temperature furnace
Vector furnace option spans −100 °C to +1,500 °C with uniform gauge-zone control, automated setpoint handling, and controller integration in the machine base for a single footprint.
Parallel batch throughput
Run multiple batches — up to four batches of four specimens — with per-batch evaluation. Suited to HE qualification workflows that require larger specimen counts per lot.
HMI logging and reporting
Integrated HMI records load and time continuously, documents heating phases, stores password-protected datasets, and exports Excel and graphical formats for audit-ready files.
Interlocked safety enclosure
Fully enclosed cabinet prevents operation with doors open. Calibrated masses remain secured inside to control drop hazards during loading cycles and energetic fracture events.
Modular upgrades
Add grips for new geometries, supplementary load cells, furnace packages, and measurement accessories over the service life without replacing the core load frame.
Technical specifications
| Parameter | Specification |
|---|---|
| Product code | VTR-13-050 |
| Test load range | 50–200 kN |
| Load control | Dead-weight lever arm and pre-tensioned spring |
| Test types | Creep, stress rupture, relaxation, crack growth, hydrogen embrittlement |
| Maximum test duration | Up to 100,000 hours |
| Temperature range (optional furnace) | −100 °C to +1,500 °C |
| Safety enclosure | Fully enclosed cabinet, interlocked doors |
| Software / control | Integrated HMI, automated logging, temperature control |
| Data export | Excel and graphical formats |
| Standards alignment | ASTM F519, ISO 204, ASTM E139, EN 2002-005, ASTM E1457 |
| Installation | Floor-mounted, vibration-absorbing base |
| Configuration | Modular — grips, load cells, furnace options |
Test protocols supported
Creep
Classic constant-load creep at ambient or elevated temperature.
Stepped-force creep
Progressive load steps for accelerated characterisation.
Stress rupture
Time-to-fracture under fixed elevated stress.
Relaxation
Stress decay under constant imposed displacement.
Crack growth / widening
Propagation metrics under sustained load.
Hydrogen embrittlement (ASTM F519)
200-hour sustained load at 75% of notched fracture strength, with batch-oriented throughput.
Ultra-long programmes
Rated for studies up to 100,000 hours for power generation and structural certification evidence.
Industries and applications
| Industry | Typical application |
|---|---|
| Aerospace | Landing gear fasteners, high-strength alloy qualification, ASTM F519 plating control, EN 2002-005 creep evidence |
| Oil & gas | Pipeline creep characterisation, drill-string HE screening, pressure vessel stress rupture |
| Automotive & transportation | Suspension fasteners, springs, driveline parts — post-plating HE batches |
| Power generation | Turbine blade alloys, boiler tubes, heat exchanger materials under long dwell |
| Defence | High-strength steel sustained-load qualification to ASTM F519 |
| Materials R&D | Creep curves, crack growth rates, relaxation of novel alloys |
| Plating QA | Post-plating process control, coating compliance, multi-specimen lot release |
Standards reference guide
| Standard | Scope |
|---|---|
| ASTM F519 | Mechanical hydrogen embrittlement evaluation for plating, coatings, and service environments |
| ISO 204 | Uniaxial tensile creep of metals — elongation, rupture time, interrupted and notched cases |
| ASTM E139 | Creep, creep-rupture, and stress-rupture testing of metallic materials |
| EN 2002-005 | Aerospace metallic materials — uninterrupted creep and stress rupture |
| ASTM E1457 | Creep crack growth times and rates in metals |
The Vector VTR-13-050 is a dead-weight lever arm creep testing machine for ASTM F519 hydrogen embrittlement, ISO 204 / ASTM E139 creep and rupture, and crack growth methods — modular, multi-specimen, and rated to 100,000-hour programmes.
Frequently asked questions
What is creep testing and why run it on a dedicated creep testing machine?
Creep testing measures slow, time-dependent deformation under constant load — often at temperature — to support design data that short tensile tests cannot supply. A dedicated creep testing machine isolates long dwells, precise constant-force hardware, and logging tuned for rupture timing.
Why choose dead-weight loading for a long creep testing machine programme?
Dead-weight systems apply force through gravity and calibrated masses, avoiding servo drift and loss of load control during extended runs or power interruptions that can affect motorised frames.
How does ASTM F519 hydrogen embrittlement testing run on the VTR-13-050?
Notched specimens are loaded in sustained tension for the standard 200-hour window so plating and post-processing effects on ductility can be judged against the method’s acceptance criteria, with batch layouts for high-throughput labs.
Which standards are supported on one VTR-13-050 installation?
The platform is engineered for ASTM F519, ISO 204, ASTM E139, EN 2002-005, and ASTM E1457 so creep, rupture, relaxation, crack growth, and HE workflows can share one qualified frame where your procedures allow.
What force and duration limits apply?
Nominal capacity spans 50 kN to 200 kN with sustained test capability up to 100,000 hours, subject to specimen design, environmental conditions, and maintenance intervals defined in your test plan.
What does the optional furnace add?
The high-temperature package extends testing from cryogenic conditions through 1,500 °C with uniform gauge-zone control integrated to the HMI for creep elongation and rupture time measurements that reference ISO 204 and ASTM E139 tolerances.