Properties of MetalsDOE-HDBK-1017/1-93CORROSIONIt is thought to start with chromium carbide deposits along grain boundaries that leave themetal open to corrosion. This form of corrosion is controlled by maintaining low chlorideion and oxygen content in the environment and use of low carbon steels.Despite the extensive qualification of inconel for specific applications, a number ofcorrosion problems have arisen with inconel tubing. Improved resistance to caustic stresscorrosion cracking can be given to inconel by heat treating it at 620C to 705C,depending upon prior solution treating temperature. Other problems that have beenobserved with inconel include wastage, tube denting, pitting, and intergranular attack.Rev. 0Page 35MS-02
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