Description
The SC-W300 is a high-precision, computer-controlled tensile stress relaxation tester for metal materials (steel bars, PC strands, wires) and fasteners at room temperature.
It accurately measures long-term stress relaxation behavior under constant strain, fully compliant with:
- GB/T 10120-2013 – Tensile Stress Relaxation of Metallic Materials
- ASTM E328-2013 – Stress Relaxation Tests for Materials and Structures
Ideal for steel mills, prestressed concrete, bridge cable, and fastener R&D.
- Grade 0.5 accuracy – no range switching
- Ultra-low sensor creep: ≤0.02% FS in 30 min
- Imported servo motor + preload ball screw – smooth, backlash-free
- Real-time dual monitoring: Force + Deformation
- Auto data logging (relaxation curve, residual stress, relaxation rate)
- Windows software – test setup, live graph, report export (PDF/Excel)
- Specialized PC strand grips (Φ12.7 / 15.2 / 18 mm)
- Laser printer included for instant test reports
| Parameter | Specification |
|---|---|
| Model | SC-W300 |
| Type | Tensile Stress Relaxation Testing Machine |
| Maximum Load | 300 kN |
| Accuracy Grade | 0.5 |
| Force Range | 2% – 100% FS (no range switching) |
| Force Indication Error | ±0.5% |
| Force Resolution | 1/500,000 FS |
| Load Sensor Creep (30 min) | ≤0.02% FS |
| Deformation Range | 0 – 15 mm (recommended L₀ = 1000 mm) |
| Deformation Error | ±0.5% |
| Displacement Resolution | 0.01 μm |
| Displacement Error | ±0.5% |
| Loading Head Speed | 0.001 – 20 mm/min |
| Force Rate Control | 0.1 – 10 kN/s |
| Speed Control Error | ±0.5% |
| Temperature Resolution | 0.1°C |
| Effective Stroke | 100 mm |
| Max Distance Between Grips | 1400 mm |
| Sample Diameter (PC Strand) | Φ12.7, Φ15.2, Φ18 mm (length ≥2.4 m) |
| Power | 1.5 kW |
| Power Supply | AC 220V ±10%, 50Hz |
| Weight | 1000 kg |
| Dimensions (L×W×H) | 2480 × 560 × 1100 mm |
| Item | Qty |
|---|---|
| Main Frame (with ball screw) | 1 set |
| Imported Servo Motor & Driver | 1 set |
| 300 kN High-Precision Load Cell | 1 unit |
| Relaxation Control System | 1 set |
| Deformation Measurement Device | 1 set |
| PC Strand Grips (Φ12.7 / 15.2 / 18 mm) | 1 set each |
| ASUS Industrial PC | 1 unit |
| HP Laser Printer (M54A) | 1 unit |
| Chinese Testing Software | 1 set |
| Tool Kit & Protective Cover | 1 set |
| Full Documentation (Manual, Calibration) | 1 set |
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