Introduction to the selection sequence of metal materials for corrosion resistance

Introduction to the order of selection of metal materials for corrosion resistance
1. The order of stainless steel materials' resistance to pitting corrosion, intergranular corrosion and stress corrosion. 1.
Austenitic stainless steel: 1Cr18Ni9Ti → 0Cr18Ni9 (304) → 0Cr18Ni11Ti (321) → 00Cr19Ni10 (304L) 0Cr17Ni12Mo2Ti (316) → 00Cr17Ni14Mo2 (316L) → 00Cr19Ni13Mo3 (317L) → 00Cr20Ni25Mo4.5Cu (904L) → 00Cr27Ni31Mo4Cu;
2. Ferritic stainless steel: 0Cr13 (410S) → 0Cr13Al (405) → 00Cr12Ti (409L) → 00Cr17 (430LX) → 00Cr18Mo2 → 00Cr26Mo1 → 00Cr30Mo2;
3. Duplex stainless steel: 00Cr18Ni5Mo3Si2 (3RE60) → 00Cr22Ni5Mo3N (SAF2205) → 00Cr25Ni7Mo4N (SAF2507);

2. The order of high temperature corrosion resistant materials:
20# → 12Cr1MoV → 12Cr2Mo1 (2Cr-1Mo) → 1Cr5Mo → 1Cr9Mo → P91 → 0Cr25Ni20;

3. Stress corrosion resistant materials:
16MnR → 20R → 07/09Cr2AlMoRE (economical new steel);
00Cr17Ni14Mo2 (316L) → 00Cr19Ni13Mo3 (317L) → 00Cr20Ni25Mo4.5Cu (904L);
00Cr18Ni5Mo3Si2 (3RE60) → 00Cr22Ni5Mo3N (SAF2205) → 00Cr25Ni7Mo4N (SAF2507);
0Cr13 (410S) → 00Cr12Ti (409L) → 00Cr17 (430LX) → 00Cr18Mo2 → 00Cr26Mo1;
Note: Ferritic stainless steel and duplex stainless steel must not be used in an environment greater than 350°C.