SUS321 Stainless Steel Plate Sheet 1.4541 Stainless Steel UNS S32100 Hot Rolled Plate
High-quality titanium-stabilized stainless steel plate and sheet designed for high-temperature applications in the 1000-1600°F range.
Product Specifications
| Product Type |
321 Stainless Steel Sheet, 321 Stainless Steel Plate |
| Specification |
ASTM A240 / ASME SA240 |
| Dimensions |
Cold rolled: 4ft×8ft (1219×2438mm)
Hot rolled: 5ft×20ft, 6ft×20ft (1500×6000mm, 1800×6000mm, 2000×6000mm) |
| Thickness |
0.6 to 80 mm |
| Width |
1219mm, 1500mm, 1800mm, 2000mm |
| Length |
2m, 2.44m, 3m, 6m or as required |
| Finish |
Satin, 2B, 2D, BA NO (8), Cold rolled sheet (CR), Hot rolled plate (HR), No.1 finish hot rolled, 1D, No.4, BA, 8K, hairline, brush, mirror, etc. |
Available Forms & Services
Forms/Shapes: Plate, Sheet, Coils, Foils, Strip, Flats, Clad Plate, Plain Sheet, Rolling Sheet, Rolling Plate, Flat Shim, Flat Sheet, Shim Sheet, Rolls, Blank (Circle), sheared, annealed, soft annealed, descaled, tread plate, Checker Plate
Our Services: Laser Cutting, bending, welding, polishing
Grade 321 / 321H Stainless Steel Overview
321 stainless steel is a titanium stabilized grade commonly used for service in the 1000-1600°F temperature range. For service temperatures up to about 1600°F, a stabilizing treatment at 1550-1650°F, air cool, may be used to provide optimum resistance to intergranular corrosion and to polythionic acid stress corrosion cracking.
321 stainless is readily welded by all common methods including submerged arc. Appropriate weld fillers are AWS ER347 bare wire and E347 covered electrodes. 321 stainless is similar in machinability to 304 stainless steel with a machinability rating of 45% relative to AISI B1112.
Product Forms: Sheet, plate, Coil, Strip, wire, Pipe, Tube, Bar, Profile, Round, Flat, Square, Hexagonal
Specifications & Certifications
- Grade 321/321H
- ASTM A240, ASME SA240, BS EN 10028-7, BS EN 10088-2 and BS EN 10088-4
- EN 10088/2, EN 10088/4 and CE Marking
- NACE MR 0175/ISO 15156 Certification
Typical Applications
- Aircraft piston engine manifolds
- Expansion joints
- Firearms production
- Thermal oxidizers
- Refinery equipment
- High temperature chemical process equipment
Chemical Composition (wt%)
| Element |
321 |
| Carbon |
0.08 |
| Chromium |
17.0-19.0 |
| Nickel |
9.0-12.0 |
| Manganese |
2.00 |
| Silicon |
0.75 |
| Nitrogen |
0.10 |
| Phosphorus |
0.045 |
| Sulfur |
0.030 |
| Titanium |
5(C+N) min / 0.70 max |
* Maximum, unless range is indicated
Mechanical Properties
| Property |
321 |
| Yield Strength, min. (ksi) |
30 |
| Tensile Strength, min. (ksi) |
75 |
| Elongation, min. (%) |
40 |
| Hardness, max. (Rb) |
95 |
International Grade Equivalents
| Grade |
UNS No |
Old British |
Euronorm |
Swedish SS |
Japanese JIS |
| 321 |
S32100 |
321S31 |
1.4541 |
2337 |
SUS 321 |
| 321H |
S32109 |
321S51 |
1.4878 |
- |
SUS 321H |
| 347 |
S34700 |
347S31 |
1.4550 |
2338 |
SUS 347 |
Alternative Grades Comparison
| Grade |
Why it might be chosen instead of 321 |
| 304L |
The requirement is for resistance to intergranular corrosion, not for high-temperature strength |
| 3CR12 |
Only a mild "high temperature" environment is present… up to about 600°C |
| 304H |
Only a mild "high temperature" environment is present… up to about 800°C |
| 310 |
The temperature of the operating environment is up to about 1100°C - too high for 321 or 321H |
| S30815 (253MA) |
The temperature of the operating environment is up to about 1150°C - too high for 321 or 321H |
Additional Information
Other Trade Names: SS 321, SUS 321, Inox 321, DIN 1.4541, UNS S32100, AISI 321, SAE 321 Sheet
Other Grades Available: 201, 202, 304, 304L, 304H, 309S, 310S, 310H, 310Si2, 316L, 316Ti, 316LN, 317L, 321, 347, 409L, 410, 410S, 416, 420, 430, 431, 436L, 439, 441, 443, 444, S31803, S32750, 904L, S30815, S31254, C276, C4, 600, 625, etc.
