NACE TM 0177 is a test we regularly carry out for all our customers at
our Lab in Navi Mumbai.
More details on this test and our service offering is at
http://www.tcreng.com/services/corrosion-salt-spray-pitting-hic-sscc.shtml#SSC
Sulfide Stress Corrosion Cracking (SSC), NACE TM 0177
Sulfide stress corrosion cracking (SSC) is a form of hydrogen
embrittlement cracking which occurs when a susceptible material is
exposed to a corrosive environment containing water and H2S at a
critical level of applied or residual tensile stress. TCR Engineering
Services in Mumbai, India conducts the NACE TM0177 tests including
Methods A and B for SSCC test, at our corrosion testing laboratory.
NACE TM0177 Test Details
NACE TM0177 tests at TCR includes the following methods:
Method A: Tensile Test (Proof Rings)
Method B: Bent Beam Test (3 or 4 Point Bends)
NACE TM0177 specifies Solution A (acidified), Solution B (acidified
and buffered) and Solution C (for martensitic stainless steel).
Solution A is used in Methods A unless the properties of Solution B or
C are specified. In any case, H2S is bubbled through the solution
constantly throughout the test period.
Testing is performed in NACE solutions A and/or B, saturated with H2S
at 24º and 90º Celsius. Stressed samples are exposed to sour
environment for a pre-determined time, after which they are removed
and analyzed for crack detection. NACE TM0177 specifies test duration
of 30 days (720 hours) for Method A or B test.
Specimen Size
The SSCC tests at TCR Engineering in India are performed routinely for
customers using tensile and bent beam specimens. For each stress level
and temperature, the following sample sze is required:
Plate - 16mm Thickness x 160mm long
Pipe - 160 long pieces irrespective of dia, cut strip of 16mm width
Bar - 160mm long piece irrespective of dia
Detailed Report
TCR Engineering issues a written report for each test, or group of
tests performed. This report includes a description of the test sample
that was received and of the test procedure that was used, the pH
values of the test solution before and after the exposure, the results
of the hardness test performed on the test specimen and a statement
declaring the results of each test.
TCR Engineering requires 6 weeks to complete the SSC test.
Please visit www.tcreng.com
Regards
Rohit Bafna
Director - Global Sales
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TCR Engineering Services (India)
TCR Arabia (KSA), TCR Kuwait
TCR World Inc. (USA)
USA Tel: +1-240-505-0739
India Tel: +91-983-353-0400
www.tcreng.com
Material Testing | Consulting | Inspection | NDT Services
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