Type 321 stainless steel contains titanium and provides good resistance to intergranular corrosion when exposed to intermittent temperatures of 800°F–1650°F. ASTM A240 Type 321 plate is used as a stabilising element in certain chromium-nickel steels, which are prone to intergranular precipitation during welding. It prevents chromium carbide precipitation resulting from exposure to elevated temperatures (800°F to 1500°F or 427°C to 816°C) and thereby maintains excellent resistance to intergranular corrosion.

Stainless Steel 321 Plates Manufacturers, Stainless Steel 321 Plates Suppliers, Stainless Steel 321 Plates Stockists, Stainless Steel 321 Plates Exporters

Stainless Steel 321 Plates Manufacturers in India, Stainless Steel 321 Plates Suppliers in India, Stainless Steel 321 Plates Stockists in India, Stainless Steel 321 Plates Exporters in India

The manufacturers and suppliers can offer 321 stainless steel plates in several finishes, such as processed, mirrored, bead-blasted, dull, and polished, in order to suit different industry requirements. This grade cannot be hardened by heat treatment but is readily weldable and formable using standard fabrication techniques.

We are one of the best stockists and exporters of 321 stainless steel plates, with competitive prices and finishes such as 2B and #4 brushed. Be it the SS 321 2B Plate, SS 321 Diamond Plate, SS 321 Checker Plate, SS 321 Hot Rolled Plate, or SS 321 Cold Rolled Plate, quality and value for money are assured for all our products.

We are ISO-certified distributors of EN 1.4541 stainless steel plates, known for our endless efforts to maintain quality and consistency in the work process. Our supplier network enables us to deliver promptly anywhere in India and, if the project requires it, in made-to-order plate sizes. Contact us as soon as possible to get the latest SS 321 plate price list and availability. We have emerged as one of the trusted names involved in offering a supreme quality range of ASTM A240 Type 321 Stainless Steel Plates to customers, thereby ensuring their complete satisfaction through our quality products and service excellence.

Stainless Steel 321 Plates Manufacturers in Mumbai, Stainless Steel 321 Plates Suppliers in Mumbai, Stainless Steel 321 Plates Stockists in Mumbai, Stainless Steel 321 Plates Exporters in Mumbai

 321 Plates FOB, CIF, CFR
Payment Small quantity T/T at sight, 30% in advance, 70% after receiving the B/L. Large quantity L/C at sight
Delivery Time 10 days after receiving the deposit by T/T or L/C
Note We can produce other standard as the customers’ requirement
Other Trade Name of 321 Stainless Plate SS 321, SUS 321, Inox 321, DIN 1.4541, UNS S32100, AISI 321, SAE 321 Plate
Form SS 321 Polished Plate, Plain Plate, Chequered Plate
Container Size
  • 20ft GP: 5898mm(length)x2352mm(width)x2393mm(high)
  • 40ft GP: 12032mm(length)x2352mm(width)x2393mm(High)
  • 40ft HC: 12032mm(length)x2352mm(width)x2698mm(high)
MTC Mill Test Certificate, Available as per EN 10204 3.1

Finishes of 321 Stainless Steel Plate

SS 321 Plate Surface Finish Definition Application
WNR. 1.4541 Plates 2B Finish Plate Cold Rolled, heat treated, pickled,


skin passed on bright rolls

Medical equipment, Food industry, Construction material, Kitchen utensils.
NO.1 Finish Plate The surface finished by heat treatment and pickling or processes corresponding there to after hot rolling. Chemical tank, pipe.
No.3 Finish Plate Polished with abrasive belt of git#100#200#,have better brightness with discontinuous coarse stria used as inner and external omaments for building, electrical appliances and kitchen utensils etc. Kitchen utensils, Building construction.
No.4 Finish Plate Polished with abrasive belt of grit#150#180,have better brightness with discontinuous coarse stria, but thinner than NO.3, are used as bathtub buildings inner and extemal omaments electrical appliances kitchen utensils and food processing Kitchen utensils, Building construction, Medical equipment.
HL Finish Plate Polished with abrasive belt of trit#150#320 on the NO.4 finish and has continuous streaks, mainly used as buildings omaments elevators, door of building, frontal plate etc. Building Construction.
BA Finish Plate Cold rolled, bright annealed and skin-passed, the product have excellent brightness and food reflexivity like mirrorm kitchen apparatus, omament etc. Kitchen utensils, Electric equipment, Building construction.
SS SUS 321 Plates 2D Finish Plate Cold rolled, heat treated, pickled  
2R Finish Plate Cold rolled, bright annealed  
2J Finish Plate Dull buffed, previously 3B  
1K/2K Finish Plate Satin polish, previously no.4 or no.5 finish  
2P Finish Plate Bright buffed, previously no.7 finish  
1P/2P Finish Plate Bright polished, previously no.8 finish  
8K Finish Plate The product have excellent brightness and prefer reflexivity can be the mirror.  

321 Stainless Steel Plate Gauges

The following size chart lists is the approximate decimal equivalents for metal gauges along with standard tolerances. Also please note that industry standard permits deviations from nominal thicknesses.

7 0.1793 0.0080
8 0.1644 0.0080
9 0.1495 0.0080
10 0.1345 0.0070
11 0.1196 0.0050
12 0.1046 0.0050
13 0.0897 0.0050
14 0.0747 0.0040
15 0.0673 0.0040
16 0.0598 0.0030
17 0.0538 0.0030
18 0.0478 0.0030
19 0.0418 0.0030
20 0.0359 0.0030
21 0.0329 0.0025
22 0.0299 0.0020
23 0.0269 0.0020
24 0.0239 0.0020
25 0.0209 0.0015
26 0.0179 0.0015
28 0.0149 0.0010

321 Stainless Steel Plate Applications

Jindal 321 Grade Stainless Steel Plate Dealers in India, 321 SS Perforated Plate stockist, ASTM A240 321 SS Plate Price in India, Outokumpu 321 Stainless Steel Plate dealer in India, ThyssenKrupp Stainless Steel 321 Plates Dealers in Mumbai, SAIL 321 Stainless Steel Plate Suppliers in UAE, ASTM A240 2B 321 SS Plate Supplier Singapore

  • Stainless Steel 321 Platess are suitable for:
    • 321 Stainless Steel Plate for Hospital equipment and surfaces
    • 321 Stainless Steel Plate for Marine hardware
    • Stainless Steel 321 Plates also used in Dairy processing plants and milking equipment
    • 321 Stainless Steel Plate for Kitchen appliances and some cookware
    • 321 Stainless Steel Plate for Kickplates for doors
    • 321 Stainless Steel Plate for Restroom panels
    • Also can be used for other applications in which the strength of steel is required as well as resistance to corrosion
    • Food handling and processing – surfaces and surrounds, such as counters and splashbacks

SS 321 Plate Chemical Composition

SS 321
Ni 09 – 12
N 0.10
Cr 17 – 19
C 0.08 max
Si 1 max
Mn 2 max
P 0.040 max
S 0.030 max
TI 4(C+N)

Stainless Steel 321 Plates Mechanical Properties

Grade 321
Tensile Strength (MPa) min 515
Yield Strength 0.2% Proof (MPa) min 205
Elongation (% in 50mm) min 40
Rockwell B (HR B) max 95
Brinell (HB) max 217

Equivalent Grades for 321 Stainless Steel Plates

SS 321 S32100 1.4541


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

Physical Properties (Room Temperature)

Grade Density (kg/m3) Elastic Modulus (GPa) Mean Coefficient of Thermal Expansion (m/m/0C) Thermal Conductivity (W/m.K) Specific Heat 0-1000C (J/kg.K) Electrical Resistivity (n.m)
0-100°C 0-315°C 0-538°C at 100°C at 500°C
321 8027 193 16.6 17.2 18.6 16.1 22.2 500 720

ASTM A240 Type 321 Cold Forming

The alloy is quite ductile and forms easily.

SS 321 Plate Hot Forming

The high sulfur content of Alloy 303 plate also has a detrimental impact on hot workability. If hot forming is required, once again, 304 plate should be considered as an alternate selection.

SS 321 Plate Machining

The cold work hardening rate of 321 stainless steel plate makes it less machinable than 410 stainless steel plate, but similar to 304 plate. The table below provides relevant machining data.

SS 321 Plate Equivalent grades :

USA/ Canada ASME-AISI JSL Designation Grade European UNS Designation Japan/JIS
AISI 321 J-321 DIN 1.4541 UNS S32100 SUS 321

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