ASTM GB JIS EN Standard 321 Stainless Steel Plate 1.4541 Stainless
Steel SS Plate and Sheet
| Product Type | 321 Stainless Steel Sheet, 321 Stainless Steel Plate |
| Specification | ASTM A240 / ASME SA240 JIS G4305 / EN 10088-2 / GB 24511 |
| Thickness | Cold rolled 321 Stainless Steel Plate 0.5-3.0 mm |
| Hot rolled 321 Stainless Steel Plate 3.0-80.0 mm |
| Standard size | cold rolled 1000*2000mm 1219*2438mm; hot rolled 1500*3000mm
1500*6000mm 1800*6000mm 2000*6000mm |
| 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. |
| Brand | TISCO BAOSTEEL POSCO JISCO DONGTE |
| 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 |
| Other Trade Name of 321 Stainless Sheet | SS 321, SUS 321, Inox 321, DIN 1.4541, UNS S32100, AISI 321, SAE
321 Sheet |
| Our Service | Laser cutting, Fire cutting, bending, Surface polishing, pvc film
Cover |
Grades 321 and 347 are the basic austenitic 18/8 steel (Grade 304)
stabilized by Titanium (321) or Niobium (347) additions. These
grades are used because they are not sensitive to intergranular
corrosion after heating within the carbide precipitation range of
425-850 °C. Grade 321 is the grade of choice for applications in
the temperature range of up to about 900 °C, combining high
strength, resistance to scaling and phase stability with resistance
to subsequent aqueous corrosion.
Grade 321H is a modification of 321 with higher carbon content, to
provide improved high-temperature strength.
A limitation with 321 is that titanium does not transfer well
across a high-temperature arc, so it is not recommended as a
welding consumable. In this case grade 347 is preferred - the
niobium performs the same carbide stabilization task but can be
transferred across a welding arc. Grade 347 is, therefore, the
standard consumable for welding 321. Grade 347 is only occasionally
used as parent plate material.
Like other austenitic grades, 321 and 347 have excellent forming
and welding characteristics, are readily brake or roll-formed and
have outstanding welding characteristics. Post-weld annealing is
not required. They also have excellent toughness, even down to
cryogenic temperatures. Grade 321 does not polish well, so is not
recommended for decorative applications.
Composition of 321 Stainless Steel
Typical compositional ranges for grade 321 stainless sheets of
steel are given in table 1.
Table 1. Composition ranges for 321-grade stainless steel
| Grade | | C | Mn | Si | P | S | Cr | Mo | Ni | N | Other |
|---|
| 321 | min.
max | -
0.08 | 2.00 | 0.75 | 0.045 | 0.030 | 17.0
19.0 | - | 9.0
12.0 | 0.10 | Ti=5(C+N)
0.70 |
| 321H | min.
max | 0.04
0.10 | 2.00 | 0.75 | 0.045 | 0.030 | 17.0
19.0 | - | 9.0
12.0 | - | Ti=4(C+N)
0.70 |
Mechanical Properties of 321 Stainless Steel
Typical mechanical properties for grade 321 stainless sheets of
steel are given in table 2.
Table 2. Mechanical properties of 321-grade stainless steel
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50 mm) min | Hardness |
|---|
| Rockwell B (HR B) max | Brinell (HB) max |
|---|
| 321 | 515 | 205 | 40 | 95 | 217 |
| 321H | 515 | 205 | 40 | 95 | 217 |
Grade Specification Comparison
Approximate grade comparisons for 321 stainless sheets of steel are
given in table 4.
Table 4. Grade specifications for 321-grade stainless steel
| Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS |
|---|
| BS | En | No | Name |
|---|
| 321 | S32100 | 321S31 | 58B, 58C | 1.4541 | X6CrNiTi18-10 | 2337 | SUS 321 |
| 321H | S32109 | 321S51 | - | 1.4878 | X10CrNiTi18-10 | - | SUS 321H |
Typical applications include:
- Aircraft piston engine manifolds
- Expansion joints
- Firearms production
- Thermal oxidizers
- Refinery equipment
- High temperature chemical process equipment
About Our Company
our company is a medium-sized professional company integrating
wholesale sales and processing of stainless steel materials,
providing customers with one-stop services of sales, processing and
logistics distribution.
Our products mainly serve nuclear power engineering, petrochemical,
electric furnace, boiler, pressure vessel, electric heating
equipment, textile, pharmaceutical, mechanical equipment, kitchen
equipment, solar energy, papermaking equipment and many other
industries, customers all over the country.
The main products of the company are: 321,310s, 309S, 316L,
304,316TI, 410S, 202,201,904L, 317L,904L, 2205,2304 and other
duplex stainless steel, as well as 800H, 600H and other high nickel
alloy, sufficient supply. Standing stock of more than 3000 tons,
and can be in need of special steel, special specifications of the
customer agent order. In order to meet the diversified needs of
customers and achieve one-stop customer procurement services, our
company can provide embossing (domestic and Japanese), mirror
polishing, plate polishing, grinding, flattening, cutting (laser,
water knife, plasma and other services according to customer
requirements.
