Combinations of metal materials prone to stress corrosion cracking and environments
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Alloy environments: Carbon steel and low-alloy steel; caustic alkali solutions; austenitic stainless steels; high-temperature alkaline solutions (NaOH·Ca(OH)2·LiOH); ammonia solutions; chloride aqueous solutions; nitrate aqueous solutions; seawater, marine atmosphere; aqueous solutions containing HCN; pyrosulfuric acid (H2SnO6, n=2~5); wet CO-CO2-air; high temperature and pressure; oxygen-containing high-purity water; carbonate and bicarbonate solutions; concentrated boiler water; aqueous solutions containing H2S; water vapor (260°C); seawater at 260°C; H2SO4; marine and industrial atmospheres; wet air (90% humidity); acetic acid aqueous solutions; NaCl+H2O2 aqueous solutions; CaCl2, FeCl3 aqueous solutions; hot NaCl; (NH4)2CO3; wet magnesium chloride; insulators; H2SO4-HNO mixed acid aqueous solutions; H2S aqueous solutions; titanium and titanium alloys; copper nitrate with red fumes; NH3 vapor and NH3 aqueous solutions; N2O4 (containing O2, without NO, 24~74°C); FeCl3; wet Cl2 (288, 346, 427°C); water, water vapor; HCl (10%, 35°C); mercury; H2SO4 (7%~60%); AgNO3; methanol, methanol vapor; aluminum alloys; NaCl aqueous solutions; seawater; CCl4; CaCl2+NH4Cl aqueous solutions; Freon; mercury
The above is a list of combinations of metal materials and environments that are prone to stress corrosion cracking, including various metal materials as well as different environments or chemicals. Under certain conditions, these combinations may cause stress corrosion cracking, leading to safety accidents or equipment damage. Therefore, when selecting metal materials and their application environments, careful consideration must be given to their compatibility and corrosion resistance. .