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Slow strain rate (SSRT) stress corrosion (SCC) testing machine

Slow strain rate stress corrosion testing machine

Slow strain rate (SSRT) stress corrosion (SCC) testing machine is used to conduct corrosion tensile tests on materials in corrosive environments, mainly to study the stress corrosion sensitivity of metal materials in corrosive solutions.

The frame structure is in the form of a frame, and the loading unit is flexibly installed at the upper or lower end according to the test requirements to adapt to the test requirements of different media environments. The environmental medium is a solution medium under low temperature and normal pressure. The experimental kettle is generally made of high borosilicate glass, which not only reduces the equipment cost, but also ensures the corrosion resistance to general media.

Test function:

Ordinary tensile test

Constant load creep/stress corrosion test

Slow strain rate tensile test

Low-cycle fatigue/corrosion fatigue test

Specimen crack germination and crack propagation rate measurement test

Constant K control, rising K control, lower K control test


1) High rigidity heavy duty frame;

2) The equipment structure is simple, convenient for experimental expansion, tension and bending shear, can be used

3) The use of sensor force measurement, large speed ratio deceleration system as an afterburner mechanism, electric adjustment space, ease of operation due to the lever type host

4) High-performance all-digital servo loading control system, high speed control accuracy;

5) Double deformation sensor can be used, and the specimen deformation measurement accuracy is high;

6) Pressure balancing device;

7) Integrated STC800 measurement and control system, easy to expand and use;

Maximum test   force


Test force range

1% to 100% F.S

Relative error   of test force indication


Maximum   moving range of loading head


Loading head movement speed


Load head displacement   measurement accuracy


Loading   head displacement resolution


Deformation   measurement range


Deformation   measurement resolution

1 μm

Deformation   measurement accuracy


Experimental   kettle operating temperature

room   temperature ~ 65 °C (optional)

Maximum   operating pressure of the experimental kettle

0.1MPa   (optional)

Experimental   kettle volume

not less than   3L




1   set

Load   cell (USA Celtron)

1 set

Servo   motor (FUJI/Panasonic)

1   set

Test   fixture

1   set

Raster   displacement sensors

1   pc

Software   and control card system

1 set


1 set

Documents   (Manual, packing list, certificate)

1) ASTM G129 - 00(2006) Standard Practice for Slow Strain Rate Testing to Evaluate the

Susceptibility of Metallic Materials to Environmentally Assisted Cracking

2) ASTM E647 Standard Test Method for Measurement of Fatigue Crack Growth Rates

3) ASTM E399 Standard Test Method for Linear-Elastic Plane-Strain Fracture Toughness K1c of Metallic Materials

4) ASTM G111 Guide for Corrosion Tests in High Temperature or High Pressure Environment, or Both

5) ASTM G47-98 Standard Test Method for Determining Susceptibility to Stress-Corrosion Cracking of 2XXX and 7XXX Aluminum Alloy Products

6) ISO 7539-7-2005 Corrosion of metals and alloys – Stress corrosion testing Part7: Method for slow strain rate testing

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