F53 S32750 Round Stainless Steel Plate Custom Stainless Steel Alloy High Temperature Resistant

S32750 round bar sheet cutting parts high temperature resistant custom stainless steel alloy.

S32750 is a super duplex stainless steel with excellent corrosion resistance and high strength for harsh environments. It is mainly used in marine engineering, chemical processing, oil and gas extraction and other fields. The tensile strength and corrosion resistance of S32750 make it perform well in these fields and become the preferred material for these applications. In addition, S32750 is also used in industries such as oil refining, fertilizers, papermaking, petroleum and chemicals.

The chemical composition of S32750 stainless steel includes:

• Chromium (Cr): 22.0%～26.0%
• Nickel (Ni): 6.0%～8.0%
• Molybdenum (Mo): 3.0%～4.5%
• Nitrogen (N): 0.20%～0.35%
• Iron (Fe): Balance

Other elements such as carbon (C), silicon (Si), phosphorus (P), sulfur (S), etc. also have specific content limits.

• Density: 8.03 g/cm³
• Melting point: 1300-1390 ℃

1. The phase ratio needs to be controlled. The most suitable ratio is that the ferrite phase and the austenite phase each account for about half, and the amount of one phase cannot exceed 65% at most, so as to ensure the best comprehensive performance.
2. It is necessary to master the organizational transformation law of duplex stainless steel and be familiar with the TTT and CCT transformation curves of each steel grade.
3. The continuous use temperature range of duplex stainless steel is -50 to 250℃.
4. Duplex stainless steel needs to be cooled quickly after solution treatment.
5. The lower limit temperature of hot processing and hot forming of high chromium-molybdenum duplex stainless steel cannot be lower than 950℃.
6. The 650-800℃ stress relief treatment commonly used for austenitic stainless steel cannot be used, and solid solution annealing treatment is generally used.
7. It is necessary to be familiar with the welding rules of duplex stainless steel, and the welding of austenitic stainless steel cannot be applied to all of them.
8. When selecting duplex stainless steel in different corrosive environments, it should be noted that the corrosion resistance of steel is always relative.