【Material Knowledge】Materials for Special Environments

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Table of Corrosion-Resistant Alloy Materials: Serial Number, Grade Code, Applicable Media. 1F30%CrMo: Cr30 is an ideal material for corrosive media with a solid content of up to 35%, such as phosphate extraction slurries and other similar corrosive and abrasive media; it is currently at the leading level in China. 21Cr18Ni9Ti18-8: alkali solutions, acetic acid, dilute nitric acid. 300Cr20Ni25Ni25Mo4UB6 contains a certain amount of C1-, F-, SO42- ions, as well as phosphoric acid, sulfuric acid, and acetic acid at high temperatures. 400Cr14Ni14Si4C4 is suitable for nitric acid at all concentrations, especially concentrated nitric acid; it is currently the casting material with the best overall properties for use in concentrated nitric acid applications. 50Cr12Ni25Mo3Cu3Si2Nb941 is suitable for sulfuric acid at normal temperature and at all concentrations; it is particularly appropriate for sulfuric acid of moderate concentration (around 50%) at temperatures below 100°C. 600Cr10Ni20Mo1.5Si6CuSS920 for high-temperature concentrated sulfuric acid, t≤130°C, concentration 93-98%. 70Cr21Ni32Mo2Cu320# alloy in high-temperature concentrated sulfuric acid, t≤130°C, concentration 40%. 8Z180C13DF2 is an abrasive medium with a solid content of up to 70%. 90Cr26Ni5Mo2Cu3CD-4MCu contains solid dilute sulfuric acid and phosphoric acid; it is wear-resistant and corrosion-resistant. 100Cr24Ni20Mo2Cu3K alloy in sulfuric acid of various concentrations at ≤60℃. 1100Cr25Ni6Mo2MM-4 is a special steel for nitric acid phosphate fertilizer production. 120Cr18Ni9304 in dilute nitric acid, organic acids. 1300Cr18Ni9304L: dilute nitric acid, organic acids, resistant to intergranular corrosion. 140Cr18Ni12Mo2TiMo2Ti: dilute nitric acid, phosphoric acid, organic acids. 150Cr18Ni12Mo23: dilute nitric acid, phosphoric acid, organic acids. 1600Cr18Ni12Mo2316L: resists intergranular corrosion in dilute nitric acid, phosphoric acid, and organic acids. 170Cr20Ni25Mo5Cu29 is resistant to intergranular corrosion in sulfuric acids of various concentrations at temperatures below 470℃. 180Cr30Ni42Mo3Cu2804 is not resistant to caustic soda evaporation, and 904 also lacks corrosion resistance. 190Cr20Ni42Mo3Cu2824904 is still not resistant to corrosive media. 200Cr18Ni5Mo5NH55 seawater. Corrosion in sulfuric acid at various concentrations for 210Cr20Ni33Mo3Cu3Nb20Cb3. 220Cr24Ni33Mo2.5Cu3Ti3#4# wear corrosion in dilute sulfuric acid with 20% solid phase. 230Cr16Ni4CuNbCB-7Cu mortar abrasion, abrasion by brine in potash fertilizer production, corrosion. 2400Cr30Ni40Mo4Cu3Lewmet resists corrosion by hot fuming sulfuric acid at 55125℃. 2500Ni65Cu28 Monel: hydrofluoric acid, silfluoric acid, high-temperature caustic soda. 2600Ni65Mo28 Hastelloy B in full concentration hydrochloric acid. 27 Plastic FEPF46 is resistant to various media such as acids, bases, salts, and oxidizing agents. 28UHMWPE in acid, alkali, and salt media with suspended solid particles at temperatures below 80°C.