SOUR GAS CORROSION TESTING SERVICES

HYDROGEN INDUCED CRACKING (HIC) TESTS – NACE Standard TM0284

This test is intended to evaluate the material susceptibility of “hydrogen induced” or “stepwise” cracking in a sour enironment.

The steel and pipe manufacturing industry and government agencies have decided to selectively evaluate line pipe, OCTG and pressure vessel plate materials from current mill runs of product to determine if these products display any particular sensitivity to the HIC phenomena.  Samples are selected, sized, machined and tested according to the latest NACE standard of the HIC test procedure TM0284.

We are capable of running 100 tests concurrently, turnaround time only limited by the time required for post-test detailed evaluation.


SULPHIDE STRESS CORROSION CRACKING TEST – NACE Standard TM0177

NACE Standard TM0177, Method A, B, C and D tests have been adopted to evaluate carbon and low alloy steel material product performance for sour service applications.

The tests consist of assembling selected samples of the candidate steel product, machined precisely in a profile as stated in the latest version of the standard.

These specimens are then mounted inside test cells which are loaded to the desired stress level.  The test cell is then filled with the NACE brine test solution, which is de-aerated and then saturated with H2S.

The test duration range is from 14 to 30 days.  Any failures which are experienced can be recorded on a time to failure versus stress level plot.  After completion of the test, a threshold stress level or stress intensity valve can then be established for the material.

These tests have proven to be most useful as quality control tools for the assessment of the suitability of high strength materials for sour service.


Method A – Smooth Tensile SSC Test
- Capability of running 300 tests concurrently
- Test duration is 30 days (720 hours)
- Typical turnaround time is 37 to 40 days


Method B – Bent Beam Test
- Capability of running 12 sets of specimens concurrently
- Test duration is 14 days


Method C – C Ring Test
- Capability of running 50 to 60 rings concurrently
- Test duration is 30 days


Method D – Double Cantilever Beam (DCB) Test
- Capability of running 60 beams concurrently
- Test duration is 14 days

We also can conduct fit-for-purpose testing with various test solutions and different H2S concentration levels.

We have a 100% full service machining facility to produce all test specimens in house.

We have the quickest turnaround time in the industry.