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Stainless Steel 321 Plates/Sheets

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321 Stainless Steel Plate Suppliers

Stainless Steel 321 Plates/Sheets

Sachin Steel Center is a leading supplier and manufacturer of Stainless Steel 321 Plates & Sheets, renowned for offering premium-grade products that meet the highest standards of quality and performance. Our SS 321 plates are ideal for industries demanding excellent corrosion resistance and durable materials. As trusted 321 stainless steel plate suppliers, we offer a range of products specifically designed for critical applications where quality and reliability matter most. Our 321 stainless steel plates are designed to withstand high temperatures without compromising their structural integrity. 

We offer SS 321 sheets and plates in a variety of dimensions, thicknesses, and surface finishes to meet your specific requirements. Whether you need a custom thickness or a unique size, we can deliver tailored solutions. We source premium-grade raw materials from trusted suppliers, ensuring each product meets the highest industry standards. As leading 321 stainless steel plate suppliers, we provide cost-effective solutions for bulk orders without compromising on quality. We offer fast delivery and on-time shipping, ensuring that you receive your products within your required timeframe. Our team of experienced professionals is available to assist with product selection, specifications, and customization to meet the unique needs of industries. All products undergo stringent quality control processes, including dimensional checks, material certification, and corrosion resistance tests, ensuring that every sheet and plate meets international standards like ASTM A240 and ASME SA240.

Contact us today to get high-performance Stainless Steel 321 Plates & Sheets at competitive quote to support your project needs.

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Table Of Content

Overview of 321 (ASTM A240 Grade 321) Stainless Steel Plate/Sheet

321 Stainless Steel Plate (ASTM A240 Grade 321) is a titanium-stabilized austenitic stainless steel known for its exceptional resistance to intergranular corrosion and high-temperature stability. It is designed for use in environments where chromium carbide precipitation could lead to corrosion in conventional stainless steels like 304 or 304L. The titanium content stabilizes the steel, making it ideal for applications requiring exposure to high temperatures (up to 1500°F or 815°C) without compromising material integrity.

Key Features of 321 Stainless Steel Plate

  • Titanium-Stabilized: The addition of titanium prevents chromium carbide formation, significantly reducing the risk of intergranular corrosion, especially in welding areas.
  • High-Temperature Resistance: 321 stainless steel plates offer excellent resistance to oxidation and scaling, making them suitable for service at temperatures up to 1500°F (815°C) in continuous operation and up to 1600°F (870°C) intermittently.
  • Superior Mechanical Properties: Known for high strength and toughness, 321 SS plates perform well under both cryogenic and high-temperature conditions. They also have enhanced creep and stress rupture properties, outperforming 304 and 304L alloys in demanding environments.
  • Excellent Weldability: 321 stainless steel sheets and plates are highly weldable, making them ideal for use in fabrication and manufacturing processes without the risk of sensitization or weld decay.

Types of Stainless Steel 321 Sheets & Plates

Cold Rolled Sheets

SS 321/321H Hot Rolled Plate

Chequered Sheets

SS 321/321H Chequered Plates

Polished SS Plates

SS 321/321H Shim Sheets

Hexagonal Perforated Stainless Steel Sheet

SS 321/321H Perforated Sheets

SS Flat Plates

SS 321/321H Cold Rolled Sheet

SS Strips

SS 321/321H Strips

Request Quote on Typs of SS 321/321H Sheet/Plates
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Specification for SS 321 Sheets / Plates

Specification ASTM A240 / ASME SA240
Thickness 0.3 mm to 120 mm
Width 1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm, etc
Surface Finish No.1, 2B, BA, 8K Mirror, Hairline, satin (Met with Plastic Coated) Embossed, brush, No.4, HL, matt, pvc etc.
Value added services for Sheets Waterjet cutting, Plasma cutting, Laser cutting, Bending and mechanical processing, edge preparation, welding, sawing and shearing
Thickness 0.3 mm to 120 mm
Length 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc
Sheets Hardness Half Hard, Quarter Hard, Soft, Hard, Spring Hard
Value Added Service Cladding, Heat Treatment, Annealed, Pickling, Polish, Rolling, Cutting, Bending, Forging, Minor Fabrication Etc.
Form Coils, Foils, Rolls, Strip, Flats, Blank (Circle), Ring (Flange)

SS 321 Plates Weight Chart

Size (mm) Weight per
plate (Kg)		 Size (mm) Weight per
plate (Kg)
2000 x1000 x 0.7 11.5 2500 x 1250 x 1.5 38.4
2500 x1250 x 0.7 17.9 3000 x 1500 x 1.5 55.3
2000 x1000 x 0.9 14.7 2000 x 1000 x 2.0 32.7
2500 x1250 x 0.9 23.0 2500 x 1250 x 2.0 51.2
2000 x1000 x 1.0 16.4 3000 x 1500 x 2.0 73.7
2500 x1250 x 1.0 25.6 2000 x 1000 x 2.5 40.9
3000 x1500 x 1.0 36.8 2500 x 1250 x 2.5 63.9
2000 x1000 x 1.2 19.6 3000 x 1500 x 2.5 92.1
2500 x1250 x 1.2 30.7 2000 x 1000 x 3.0 49.6
3000 x1500 x 1.2 44.2 2500 x 1250 x 3.0 77.5
2000 x1000 x 1.5 24.6 3000 x 1500 x 3.0 112.0

Size Chart of 321 Stainless Steel Sheet

SIZE SIZE
.125″ 3.18mm
.134″ 3.40mm
.156″ 3.96mm
.187″ 4.75mm
.250″ 6.35mm
.312″ 7.92mm
.375″ 9.53mm
.500″ 12.7mm
.625″ 15.9mm
.750″ 19.1mm
.875″ 22.2mm
1″ 25.4mm
1.125″ 28.6mm
1.250″ 31.8mm
1.500″ 38.1mm
1.750″ 44.5mm
2″ 50.8mm
2.500″ 63.5mm
3″ 76.2mm

Stainless Steel 321/321H Plate Equivalent Grades

STANDARD UNS WNR. JIS EN
SS 321 S32100 1.4541 SUS 321 X6CrNiTi18-10
SS 321H S32109 1.4878 SUS 321H X12CrNiTi18-9

Chemical Composition of SS 321H Sheet

Grade C Mn Si P S Cr N Ni Ti
SS 321 0.08 max 2.0 max 1.0 max 0.045 max 0.030 max 17.00 – 19.00 0.10 max 9.00 – 12.00 5(C+N) – 0.70 max
SS 321H 0.04 – 0.10 2.0 max 1.0 max 0.045 max 0.030 max 17.00 – 19.00 0.10 max 9.00 – 12.00 4(C+N) – 0.70 max

Mechanical Analysis of SS 321 Plate

Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
8.0 g/cm3 1457 °C (2650 °F) Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 35 %

Stainless Steel 321 Plates Thickness Chart

Gauge
Number		 Inches MM
8 .17187 4.365
9 .15625 3.968
10 .14062 3.571
11 .125 3.175
12 .10937 2.778
14 .07812 1.984
16 .0625 1.587
18 .050 1.270
20 .0375 .9525
22 .03125 .7937
24 .025 .635
26 .01875 .476
28 .01562 .396
30 .0125 .3175
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SS 321 Plate Price

The price of SS 321 plates varies depending on factors such as size, thickness, surface finish, and quantity. Larger plates or custom sizes typically cost more, while polished or specialized finishes can also increase the price. Additionally, the grade of stainless steel (e.g., standard SS 321 or SS 321H) and location-based shipping costs may impact pricing. For an accurate quote, it’s best to contact a reliable supplier with your specific requirements.

Send Requirements

SS 321 Plates Applications

    • Petrochemical Industry
    • Chemical Industry
    • Oil and Gas Industry
    • Pulp & Paper Indusry
    • Power Plant Industry
    • Food Processing Industry
    • Pharmaceuticals Industry
    • Energy Industry
    • Aerospace Industry
Application Industries

Frequently Asked Questions About 321 SS Plates/Sheets

The SS 321 plate price can vary depending on factors like thickness, size, surface finish, and market conditions. To get an accurate quote, it’s best to contact your supplier with the required specifications for your project.

Stainless Steel 321 and 321H are both titanium-stabilized alloys designed to offer excellent resistance to intergranular corrosion. The key difference is that 321H has a higher carbon content (0.04-0.10%), providing enhanced creep resistance and higher strength at temperatures above 1000°F (537°C), making it ideal for higher temperature applications.

Stainless Steel 321 plates are titanium-stabilized, austenitic stainless steel designed to offer excellent resistance to intergranular corrosion, especially after exposure to high temperatures. They are widely used in applications where high temperature and oxidation resistance is required, such as chemical processing, aerospace, and power generation.

SS 321 and 321H plates are used in industries like chemical processing, aerospace, power generation, food processing, and pharmaceuticals, due to their superior resistance to corrosion and high-temperature stability. They are commonly used in heat exchangers, reactors, and turbine components that are exposed to high-temperature environments.

  1. Stainless Steel 321 sheets offer several advantages, including:

    • Excellent Corrosion Resistance: Particularly in high-temperature environments and welding zones.
    • High-Temperature Stability: With resistance to oxidation up to 1500°F (815°C).
    • Good Mechanical Properties: With high tensile strength and toughness even at cryogenic temperatures.
    • Ease of Fabrication: Due to good weldability and workability for diverse applications.
    • Durability: Offers long-lasting performance even in harsh environments.
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