Stress Corrosion Cracking of 13Cr-5Ni-2Mo Martensitic Stainless Steel in Methanol Available to Purchase

We report a preliminary study of stress corrosion cracking (SCC) of a 13Cr-5Ni-2Mo martensitic stainless steel (UNS S41426), 110 ksi grade in methanol at 82°C. SCC was predominantly intergranular, although transgranular cracking also occurred at low chloride solutions. SCC was eliminated by the absence of oxygen and/or the presence of water. The presence of copper exacerbated the cracking slightly.