321 stainless steel is an excellent choice for applications that require resistance to intergranular corrosion. This type 321 stainless steel is a titanium-stabilized austenitic alloy that offers superior corrosion resistance, making it a popular choice for a wide range of industrial and commercial applications.
321 stainless steel is known for its ability to resist intergranular corrosion. This type of corrosion occurs when chromium carbides form at the grain boundaries during high-temperature exposure, which can lead to cracking and ultimately failure of the material. Due to the addition of titanium, 321 stainless steel is able to prevent the formation of chromium carbides and maintain its strength and durability even in high-temperature environments.
Alloy 321H (UNS S 32109) stainless steel plate is the higher carbon (0.04 - 0.10) version of the alloy. It was developed for enhanced creep resistance and for higher strength at temperatures above 1000oF (537°C). In most instances, the carbon content of the plate enables dual certification.
321 Stainless Steel Plate Specification
|
Product Name |
Stainless Steel Sheet/Plate |
|
Standard |
JIS, AISI,ASTM,GB, DIN, , etc. |
|
Material |
304, 304L, 309S, 321, 430, 904L,2205, etc. |
|
Thickness |
0.1mm-150mm, or according to the customers' request. |
|
Width |
500mm-3000mm, or according to the customers' request. |
|
Length |
500mm-6000mm, or according to the customers' request. |
|
MOQ |
1 Ton |
|
Sample |
Provided |
SS 321 Chemical Composition
| Element | 321 | 321H |
| Chromium | 17.00 min.-19.00 max. | 17.00 min.-19.00 max. |
| Nickel | 9.00 min.-12.00 max. | 9.00 min.-12.00 max. |
| Carbon | 0.08 | 0.04 min.-0.14 max. |
| Manganese | 2.00 | 2.00 |
| Phosphorus | 0.045 | 0.045 |
| Sulfur | 0.03 | 0.03 |
| Silicon | 0.75 | 0.75 |
| Titanium | 5 x (C + N) min.-0.70 max. | 4 x (C + N) min.-0.70 max. |
| Nitrogen | 0.10 | 0.10 |
| Iron | Balance | Balance |
AISI 321 Mechanical properties
| Element | SS 321-321H |
| Density | 8.0 g/cm3 |
| Melting Point | 1457 °C (2650 °F) |
| Tensile Strength | Psi – 75000 , MPa – 515 |
| Yield Strength (0.2%Offset) | Psi – 30000 , MPa – 205 |
| Elongation | 35 % |
321 Steel Physical Properties
| Density lb/inᶟ | 0.286 |
| Density g/cmᶟ | 7.920 |
| Melting Range | 2550-2635°F/1398 – 1446 °C |
| Thermal Conductivity at 212°F (100°C) | 9.3 BTU/hr/ft²/ft/°F |
| Thermal Conductivity at 212°F (100°C) | 16.0 W/m-°K |
| Electrical Resistivity | 72 Microhm-cm at 20°C |
321 Plate Surface Finish
321 ss sheet is available in various surface finishes, including 2B (cold-rolled, annealed, and pickled), No. 4 (brushed finish), and others, depending on the specific requirements of the application.
321 Sheet Processing Service
321 SS sheet has been precision processed, has good surface quality and flatness, and is easy to cut, bend and weld,has great advantages in factory production, engineering assembly and machining.
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