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NACE & Sour service?
NACE MR0175-2003 lists materials resistant to sulfide and stress-corrosion cracking resistance. The susceptibility of many materials to environmentally-assisted cracking varies with the environment. For example, many common stainless steels will stress-corrosion crack at higher temperatures in...- MikeBurns
- Post #2
- Forum: Corrosion engineering
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Would zinc coated 4043 steel with 17-4 SS produce corrosion?
Also, zinc plated 4340 is susceptible to hydrogen stress cracking (aka hydrogen embrittlement) in a corrosive evironment if the hardness exceeds about 35 HRC, equivalent to a tensile strength of about 157 ksi. 17-4 PH can also be susceptible to hydrogen embrittlement coupled to zinc in...- MikeBurns
- Post #3
- Forum: Corrosion engineering
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Risk of seawater corrosion to the bolt hole and screw?
A serious concern with bolting materials used subsea under cathodic protection is hydrogen-stress cracking, sometimes called hydrogen embrittlement. We have seen a number of failures of bolting materials with hardness in excess of 35 Rockwell C (HRC). 35 HRC should be specified as a maximmum...- MikeBurns
- Post #7
- Forum: Corrosion engineering
