AISI321 Stainless Steel Plate Sheet Thickness 0.8 - 60.0mm in 1219mm 1500mm Width SS Plate

About 321 Stainless Steel

This is a standard austenitic 18/8 stainless steel grade, (304), but stabilized by Titanium. The titanium within means the stainless steel is intergranular corrosion resistant after heating, (between 425-900 degrees Celsius). Remarkably high strength as well as scaling resistance and phase stability set 321 Stainless Steel apart from other similar grades. This grade is not, however, recommended for welding consumable, as the titanium component does not allow good transfer of heat across a high-temperature arc.

Chemical Composition

Iron, <0.08% Carbon, 17-19% Chromium, 9-12% Nickel, <2% Manganese, <1% Silicon, 0.3-0.7% Titanium, <0.045% Potassium, <0.03% Sulphur

Our 321 Stainless Steel Products

321 Stainless Steel Plate, 321 Stainless Steel Sheet, 321 Stainless Steel Round Bar, 321 Pipe Tube & Fittings

CORROSION RESISTANCE

• exhibits good general corrosion resistance that is comparable to 304.
• developed for use in the chromium carbide precipitation range of 1800 – 1500°F (427 – 816°C) .
• can be used in most diluted organic acids at moderate temperatures .
• can be used in pure phosphoric acid at lower temperatures.
• can be used in up to 10% diluted solutions at elevated temperatures.
• resists polythionic acid stress corrosion cracking in hydrocarbon service.
• utilized in chloride or fluoride free caustic solutions at moderate temperatures.
• does not perform well in chloride solutions, even in small concentrations, or in sulfuric acid service.

Features

• High strength
• Scaling resistance and phase stability
• Excellent forming and welding characteristics
• Resistant to potable water with up to 200mg/L chlorides at normal temperature.

Applications

• Aerospace – piston engine manifolds
• Chemical Processing
• Expansion Joints
• Food Processing – equipment and storage
• Petroleum Refining – polythionic acid service
• Waste Treatment – thermal oxidizers