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China AISI 321 Stainless Steel Sheet & Plate 1mm*1220*2440mm Manufacturers, Suppliers

1. Type: Stainless Steel Sheet/Plate 2. Specification: TH 0.3-70mm, width 600-2000mm 3. Standard: ASTM, AISI, JIS, DIN, GB 4. Technique: Cold rolled or hot rolled 5. Surface Treatment: 2b, Ba, Hl, No.1, No.4, Mirror, 8k Golden or as requirement 6. Certificates: Mill Test Certificate, ISO,SGS or Other Third Party in 7. Application: Construction, Machine Building, Container etc. 8. Origin: Shanxi/Tisco or Shanghai/Baosteel 9. Package: Standard Export Package 10. Stock : Stock

Product Description

stainless steel sheet (4)
stainless steel plate (16)
stainless steel sheet (3)
THE ABOVE PHOTO IS PRODUCED FOR OUR CLIENT FROM UAE
Size : 1220*2440*1mm
Grade : AISI 321
Chemical Properties
321 stainless steel is a titanium-stabilized austenitic stainless steel (similar to 304 but with added titanium to prevent chromium carbide precipitation). It offers excellent high-temperature resistance and intergranular corrosion resistance.
Typical Chemical Composition (%):
Element Composition
Chromium (Cr) 17.0 - 19.0
Nickel (Ni) 9.0 - 12.0
Carbon (C) ≤ 0.08
Manganese (Mn) ≤ 2.0
Silicon (Si) ≤ 1.0
Phosphorus (P) ≤ 0.045
Sulfur (S) ≤ 0.03
Titanium (Ti) ≥ 5×C (min. 0.4%)
Iron (Fe) Balance
Key Features
  • High-temperature stability (up to 800-900°C)
  • Resists carbide precipitation (sensitization) during welding
  • Good oxidation & corrosion resistance (better than 304 in some environments)
Applications
Due to its heat resistance and weldability, 321 stainless steel is widely used in:
  • Aerospace & Jet Engine Components (exhaust systems, combustion chambers)
  • Chemical & Petrochemical Equipment (heat exchangers, pressure vessels)
  • High-Temperature Pipelines & Boilers (thermal stability)
  • Automotive Exhaust Systems (manifolds, catalytic converters)
  • Food Processing & Pharmaceutical Equipment (where welding is required)
  • Heat Treatment & Furnace Parts (due to oxidation resistance)
Specifications & Forms
321 stainless steel is available in:
1. Plate / Sheet
Thickness: 0.1mm – 100mm
Width: 1000mm, 1219mm, 1500mm (standard)
Surface Finishes:
2B (smooth, slightly reflective)
No. 4 (brushed, matte finish)
BA (bright annealed, mirror-like)
2. Pipe / Tube
Seamless & Welded
Sizes: 1/8" to 24" (or custom)
Standards: ASTM A312, A213
3. Bar / Rod
Round, Square, Hexagonal
Diameter: 1mm – 500mm
4. Wire & Fasteners
Used in high-temperature bolts, nuts, and springs
International Standards
Standard Equivalent Designation
ASTM A240 (Plate), A312 (Pipe), A276 (Bar)
EN (EU) 1.4541 (X6CrNiTi18-10)
JIS (Japan) SUS321
GB (China) 0Cr18Ni10Ti
Why Choose 321 Stainless Steel?
  • Superior high-temperature performance (vs. 304/316)
  • Reduced risk of intergranular corrosion after welding
  • Widely used in aerospace, automotive, and chemical industries
Stainless Steel Sheet & Plate Applications
Stainless steel sheet & plate have a variety of industrial applications, some of which include:
  • Food Processing & Handling
  • Heat Exchangers
  • Chemical Process Vessels
  • Conveyors
Features
No. Item Details
1 commodity stainless steel sheet/Plate
2 material 201, 202, 304, 304L, 316, 316L, 309S, 310S, 317L, 321, 409, 409L, 410, 420, 430, etc
3 surface 2B, BA, HL, 4K, 6K, 8KNO. 1, NO. 2, NO. 3, NO. 4, NO. 5, and so on
4 standard AISI, ASTM, DIN, EN, GB, JIS, etc
5 specification (1) thickness: 0.3mm- 100mm
(2) width: 1000mm, 1250mm, 1500mm, 1800mm, 2000mm, etc
(3) length: 2000mm, 2440mm, 3000mm, 6000mm, etc
(4) The specifications can be provided as clients' requirement.
6 application (1) Construction, decoration
(2) petroleum, chemical industry
(3) electrical appliances, automotive, aerospace
(4) house ware, kitchen appliances, cutlery, foodstuff
(5) surgical instrument
7 advantage (1) High surface quality, clean, smooth finish
(2) Good corrosion resistance, durability than ordinary steel
(3) High strength and to deform
(4) Not easy to be oxidized
(5) Good welding performance
(6) The use of diversity
8 package (1) Products are packed and labeled according to regulation
(2) According to customers' requirement
9 delivery within 20 working days since we get the deposit, mainly according to your quantity and the ways of transportation.
10 payment T/T, L/C
11 shipment FOB/CIF/CFR
12 productivity 500tons/month
13 Note We can supply other grade products as customers' requirement.
Standard & Material
  • ASTM A240 Standard: 201, 304, 304L, 304H, 309S, 309H, 310S, 310H, 316, 316H, 316L, 316Ti, 317, 317L, 321, 321H, 347, 347H, 409, 410, 410S, 430, 904L
  • ASTM A480 Standard: 302, s30215, s30452, s30615, 308, 309, 309Cb, 310, 310Cb, S32615, S33228, S38100, 304H, 309H, 310H, 316H, 309HCb, 310HCb, 321H, 347H, 348H, S31060, N08811, N08020, N08367, N08810, N08904, N08926, S31277, S20161, S30600, S30601, S31254, S31266, S32050, S32654, S32053, S31727, S33228, S34565, S35315, S31200, S31803, S32001, S32550, S31260, S32003, S32101, S32205, S32304, S32506, S32520, S32750, S32760, S32900, S32906, S32950, S32974
  • JIS 4304-2005 Standard: SUS301L, SUS301J1, SUS302, SUS304, SUS304L, SUS316/316L, SUS309S, SUS310S, 3SUS21L, SUS347, SUS410L, SUS430, SUS630
  • JIS G4305 Standard: SUS301, SUS301L, SUS301J1, SUS302B, SUS304, SUS304Cu, SUS304L, SUS304N1, SUS304N2, SUS304LN, SUS304J1, SUSJ2, SUS305, SUS309S, SUS310S, SUS312L, SUS315J1, SUS315J2, SUS316, SUS316L, SUS316N, SUS316LN, SUS316Ti, SUS316J1, SUS316J1L, SUS317, SUS317L, SUS317LN, SUS317J1, SUS317J2, SUS836L, SUS890L, SUS321, SUS347, SUSXM7, SUSXM15J1, SUS329J1, SUS329J3L, SUS329J4L, SUS405, SUS410L, SUS429, SUS430, SUS430LX, SUS430J1L, SUS434, SUS436L, SUS436J1L, SUS444, SUS445J1, SUS445J2, SUS447J1, SUSXM27, SUS403, SUS410, SUS410S, SUS420J1, SUS420J2, SUS440A
Surface Treatment
Item Surface Finishing Surface Finishing Methods Main Application
NO.1 HR Heat treatment after hot rolling, pickling, or with treatment For without the purpose of the surface gloss
NO.2D Without the SPM Method of heat treatment after cold rolling, pickling surface roller with wool or eventually a light rolling a matte surface processing General materials, building materials.
NO.2B After SPM Giving No.2 processing materials appropriate method of cold light sheen General materials, building materials (most of the goods are processed)
BA Bright annealed Bright heat treatment after cold rolling, in order to be more shiny, cold light effect Automotive parts, home appliances, vehicles, medical equipment, food equipment
NO.3 Shiny, coarse grain processing The NO.2D or NO.2B processing timber No. 100-120 polishing abrasive grinding belt Building materials, kitchen supplies
NO.4 After CPL The NO.2D or NO.2B processing timber No. 150-180 polishing abrasive grinding belt Building materials, kitchen supplies, vehicles, medical equipment, food equipment
240# Grinding of fine lines The NO.2D or NO.2B processing timber 240 polishing abrasive grinding belt Kitchen appliances
320# More than 240 lines of grinding The NO.2D or NO.2B processing timber 320 polishing abrasive grinding belt Kitchen appliances
400# Close to BA luster The MO.2B timber 400 polishing wheel polishing method Building materials, kitchen utensils
HL Polishing line having a long continuous processing In a suitable size (usually mostly No. 150-240 grit) abrasive tape for as long as the hair, having a continuous processing method of polishing line The most common building materials processing
NO.6 NO.4 processing less than the reflection, the extinction NO.4 processing material used for polishing Tampico brushing Building materials, decorative
NO.7 Highly accurate reflectance mirror processing No. 600 of the rotary buff with a polishing Building materials, decorative
NO.8 Highest reflectivity mirror finish Fine particles of abrasive material in order polishing, mirror polishing with a polishing Building materials, decorative, mirrors
Frequently Asked Questions (FAQ)
❓ What is the chemical difference between 321 and 304 stainless steel?
321 stainless steel is titanium-stabilized. Unlike grade 304, it has titanium added (minimum 5 times the carbon content) to prevent chromium carbide precipitation at high temperatures during welding, ensuring excellent resistance to intergranular corrosion.
❓ What are the maximum operating temperatures for 321 stainless steel?
Grade 321 performs exceptionally well in high-temperature environments, offering high-temperature stability and oxidation resistance up to temperatures of 800°C to 900°C (1472°F to 1652°F).
❓ In what product forms can I purchase 321 stainless steel?
It is available in various forms including plates and sheets (0.1mm to 100mm thickness), seamless & welded pipes/tubes (1/8" to 24" sizes), round/square/hexagonal bars, rods, wire, and fasteners.
❓ What surface finishes are available for stainless steel sheets?
Common finishes include HR/No.1 (hot rolled, pickled), 2B (smooth, slightly reflective), BA (bright annealed, mirror-like), No.4 (brushed), and HL (hairline finish), which are suitable for structural and decorative applications.
❓ Why is 321 stainless steel ideal for aerospace and automotive exhaust systems?
Due to its superior thermal stability, oxidation resistance, and ability to prevent carbide precipitation during welding, 321 stainless steel is highly reliable for harsh, high-heat environments like exhaust manifolds and jet engine components.
❓ What international standards does 321 stainless steel comply with?
It meets several international specifications, including ASTM A240 (USA), EN 1.4541 (Europe), JIS SUS321 (Japan), and GB 0Cr18Ni10Ti (China).

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