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Universal Testing Machine
SXW-300 Computer Control Steel Strand Tensile Stress Relaxation Testing Machine
HST SXW-300 stress relaxation testing machine
Application:
HST SXW-300 stress relaxation testing machine is used to determine stress-relaxation of metal, such as pre-stressed concrete strand, pre-stressed concrete bar, steel rope and so on., the specimen is deformed a given amount and decrease in stress is recorded over prolonged period of exposure at constant elevated temperature.Applied Standards:
EN10391:2003 stress relaxation Test method of metal ,ASTM E328-02(2008) Standard Test Methods for Stress Relaxation Tests for Materials and Structures.
Main Specifications:
|
Model |
HST SXW-300 | HST SXW-500 |
|
Host Structure |
Horizontal Type |
|
|
Max. Test Force(KN) |
300 |
500 |
|
Test Force Range |
2%~100% |
|
|
Load Accuracy |
± 1% |
|
|
Test Force Resolution |
10 N |
|
|
Max. Relaxation Test Space |
2000 |
|
|
Chucks Displacement Resolution |
0.001 mm |
|
|
Stretching Stroke |
200 mm |
|
|
Digital Micrometer |
Range: 10 mm, Resolution: 0.001 mm |
|
|
Test Force Indication Relative Error |
±1% |
|
|
Temperature Resolution |
0.1 °C |
|
|
Displacement Measurement Accuracy |
≤±0.5%FS |
|
|
Chucks Moving Speed |
0-20 mm/min |
|
|
Clamping Specimen Diameter |
φ9.53, φ12.7, φ15.24. OR Other Diameter Depend On Customers’ Requirements (standard: 1 size included ) |
|
|
Constant Speed Control Accuracy |
≤±1% (Set Value) |
|
|
Test Time |
More Than 1000 Hours |
|
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