Stress Corrosion Cracking Evaluation Methods of Stainless Steel Tubing

Referring to NACE TM 0177 standard, the applicability of using bending beam test (B method), C ring test (C method) and double-cantilever beam (DCB) test (D method) to evaluate the stress corrosion cracking (SCC) performance of stainless steel tubing was discussed by simulated SCC performance evaluation tests. The results showed that B method could not reflect the effect of actual surface state of stainless steel tubing on the anti-SCC performance, the evaluation of D method was not very effective, C method could reflect the effect of actual surface state of stainless steel tubing on the anti-SCC performance. It is recommended to use C method to evaluate the anti-SCC performance of stainless steel tubing.