High Quality 321 / 321H / 1.4541 Stainless Steel Plate Sheet
Premium titanium-stabilized stainless steel plates and sheets
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. |
|---|
| Our Service | Laser Cutting, bending, welding, polishing |
|---|
| 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 |
|---|
Alternative Trade Names
SS 321, SUS 321, Inox 321, DIN 1.4541, UNS S32100, AISI 321, SAE
321 Sheet
Available Grades
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.
Grade 321 / 321H Stainless Steel Overview
321 stainless steel is a titanium-stabilized austenitic grade
specifically designed for service in the 1000-1600°F temperature
range. For optimal performance at temperatures up to 1600°F, a
stabilizing treatment at 1550-1650°F with air cooling is
recommended to provide maximum resistance to intergranular
corrosion and polythionic acid stress corrosion cracking.
This grade offers excellent weldability using all common methods
including submerged arc welding. Recommended weld fillers include
AWS ER347 bare wire and E347 covered electrodes. With a
machinability rating of 45% relative to AISI B1112, 321 stainless
steel machines similarly to 304 stainless steel.
Available Product Forms
Sheet, Plate, Coil, Strip, Wire, Pipe, Tube, Bar, Profile, Round,
Flat, Square, Hexagonal
Specifications and 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
Chemical Composition (wt%) limits as specified in ASTM A240 and
ASME SA240*
| 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
Mechanical property requirements for annealed product as specified
in ASTM A240 and ASME SA240
| Property | 321 |
|---|
| Yield Strength, min. (ksi) | 30 |
| Tensile Strength, min. (ksi) | 75 |
| Elongation, min. (%) | 40 |
| Hardness, max. (Rb) | 95 |
Grade Specification Comparison
| 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 |
Possible Alternative Grades
| 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 |
439 Stainless Steel Sheet 2B 2D Finishing 0.8-3.0mm TISCO POSCO
