321 Stainless Steel Coil

321 stainless steel, an enhanced version of 304, incorporates Titanium to avert critical corrosion. It is optimally used in environments ranging from 430℃ to 900℃.

  • Place of Origin: Guangdong ,China(Mainland)
  • Payment Term: L/C At Sight 100%, T/T 30%
  • Delivery Time: Stock goods 7-15 days, Future goods within 25 days
  • Package Detail : Standard Sea-Worthy Packing
  • Price Term: EXW, FOB, CFR, CIF
  • Sample: Free
  • Mill Origin: Tisco, Posco, Aoxing, etc.
  • Certificate: SGS, BV, IQI, TUV, ISO, etc
  • Grade : Grade 321, X6CrNiTi18-10, Z6CNT18-10, AISI 321, SUS 321, 1.4541, UNS S32100, X6CrNiTi18-10
  • Finish: 2B, No.1, 1D, 2D, BA+PVC, No.4+PVC, Hairline+PVC, 8K/No.8, etc.
  • Thickness: 0.22-15.0mm
  • Width: 20-1540mm
  • Weight Per Coil: 5/10/20MT or customized
  • Stainless Steel Coil Edge: Slit Edge/ Mill Edge
  • Product Detail

    Product Tags

    SUS 304 Mirror 8K Stainless Steel Coil (1)

    What is 321 Stainless Steel Coil?

    SUS 304 Mirror 8K Stainless Steel Coil (3)

    321 stainless steel is an austenitic Ni-Cr-Ti alloy renowned for its excellent wear and high-temperature resistance, along with superior creep strength. This alloy offers robust performance across various concentrations and temperatures of both organic and inorganic acids, showcasing particular efficacy in oxidizing environments. Distinguished from 316L by its enhanced heat resistance, 321 maintains similarities with 304 but stands out due to the addition of Titanium, which grants it improved high-temperature durability and intergranular corrosion resistance. This composition also helps in preventing chromium carbide formation, ensuring its reliability in various applications.

    Features of 321 Stainless Steel Coil

    321 stainless steel is renowned for its exceptional high-temperature capabilities, displaying superior stress rupture and creep resistance compared to 304 stainless steel. This grade excels in high-temperature applications, maintaining strong intergranular corrosion resistance and withstanding oxidation up to 816°C. Notably advantageous for welding components used at elevated temperatures, it also offers commendable low-temperature toughness. Additionally, 321 stainless steel maintains its non-magnetic properties in the annealed condition, enhancing its versatility in various industrial applications.

    321 Stainless Steel Chemical Composition & Technical Data Sheet

    321 Stainless Steel Standards Comparison

    321 321 S32100 0Cr18Ni10Ti 1.4541 X6CrNiTi18-10 12X18H10T X6CrNiTi18-10 SUS 321

    321 Stainless Steel Chemical Composition

    Grade Standard Chemical Composition(%)
    C Si Mn P S Cr Ni Ti N
    321 ASTM A240 ≤0.08 ≤0.75 ≤2.00 ≤0.045 ≤0.030 17.00~19.00 9.00~12.00 5*(C%+N%)~0.70 ≤0.10

    321 Stainless Steel Mechanical Properties

    Grade Standard Tensile Test Hardness Test
    0.2% Y.S(Mpa) T.S(Mpa) Elongation(%) Hardness HRB
    321 ASTM ≥205 ≥515 ≥40 Annealed ≤95

    321 Stainless Steel Finish & Application

    SUS 304 Mirror 8K Stainless Steel Coil (1)

    Applications of 321 Stainless Steel:

    Aerospace Exhaust Pipes: Utilized for its high-temperature resilience, ensuring reliability under the severe thermal conditions experienced in aerospace environments.

    Boiler Covers: Chosen for its strength and ability to withstand fluctuating temperatures, making it ideal for protecting and insulating boilers.

    Heat Exchangers: Valued for its excellent thermal stability and corrosion resistance, making it suitable for transferring heat efficiently while maintaining material integrity.

    Boiler Tubing: Used for its durability and high-temperature resistance, ensuring long-lasting performance in the high-demand settings of boiler systems.

    Expansion Joints: Employed in systems requiring high elasticity and strength to accommodate thermal expansion, maintaining structural integrity without the need for post-weld heat treatment.

    321 Stainless Steel Coil Package & Loading Details

    201 stainless steel coil packing detail
    201 stainless steel coil packing 1
    201 stainless steel coil packing 2

    Why Choose Us?


    We are the cold-rolled stainless steel coil production base in China with 200,000 tons capacity annually.

    1. Guaranteed Stock Availability: Experiencing stock shortages during crucial times can hinder your projects. Our robust inventory management ensures a consistent supply, ready to dispatch large quantities swiftly, keeping your operations smooth and uninterrupted.

    2. Comprehensive Range of Specifications: Finding the exact stainless steel coil specifications can be challenging. We offer a diverse range of specs, ensuring you find precisely what your project demands, with the assurance of our commitment to meeting your specific needs.

    3. Customized Material Processing: Custom processing needs can be demanding. Our advanced facilities provide tailored solutions, from precise dimension alterations to specific finish treatments, ensuring your requirements are met with utmost precision.

    4. Accurate Shearing Services: Precision is key in stainless steel utilization, and our expert shearing services guarantee exactness in every cut, aligning perfectly with your specifications and quality expectations.

    5. Cost-effectiveness is crucial in supplier selection. Our optimized procurement and cost-efficient processes ensure you receive not just premium-quality products but also the best prices, offering exceptional value for your investment.


    321 Stainless Steel Coil FAQ

    1. Can you provide custom 321 stainless steel?

    Absolutely, we tailor 321 stainless steel to your needs, ensuring your specifications for thickness, width, and physical properties are met.


    2. What's the delivery timeline?

    Quick delivery for trial orders within a week, while regular orders range from 7-30 days.


    3. How do you guarantee your 321 steel product quality?

    Our 321 steel products undergo rigorous inspections during manufacturing, cutting, and packaging to ensure the highest quality. And 321 mill test certificate is also provided.


    4. Can I get some ss321 steel samples?

    We can provide ss321 steel samples for you to check the quality. Sample is free and you just pay the freight.


    5. 321 stainless steel vs 304, what's difference between them?

    What are the advantages of 304 Stainless Steel?

    Exhibits reliable general corrosion resistance, adaptable to various settings.
    Offers excellent weldability and formability, accommodating diverse manufacturing requirements.
    Ideal for widespread industrial uses, including food processing, construction, and kitchenware, due to its versatile properties.

    What are the disadvantages of 304 Stainless Steel?
    Has a constrained resistance to high temperatures, with a tendency for intergranular corrosion at temperatures above 800°C.
    Post-welding, it's susceptible to intergranular corrosion, particularly when exposed to elevated temperatures.

    What are the advantages of 321 Stainless Steel?
    Provides outstanding high-temperature resistance, making it perfect for use in environments subjected to elevated temperatures and for high-temperature chemical processes.
    Offers superior weldability which minimizes the likelihood of intergranular corrosion post-welding.
    Enhanced resistance to intergranular corrosion, thanks to its titanium addition, making it robust in varying conditions.

    What are the disadvantages of 321 Stainless Steel?
    Typically incurs a higher cost compared to 304 stainless steel, reflecting its specialized properties.
    In certain general applications, its corrosion resistance may not be as strong as that of 304 stainless steel, especially in environments where its high-temperature resistance is not a factor.


    6. How to choose a 321 stainless steel supplier?

    Selecting a supplier for 321 stainless steel coils involves a series of steps to ensure quality and reliability:

    Research Suppliers: Utilize online resources to identify reputable suppliers specializing in stainless steel, focusing on those with a strong industry presence and positive reviews.

    Engage with Suppliers: Contact the suppliers to discuss their 409 stainless steel coil offerings, including specifications, pricing, and availability. Consider requesting samples for quality assessment.

    Assess Credibility: Evaluate the suppliers' credibility by reviewing their business credentials, certifications, and customer feedback, ensuring they adhere to industry standards and best practices.

    Compare Quotations: Solicit and compare quotes from various suppliers, clarifying your specific needs such as quantity, specifications, and delivery details to make an informed decision.

    Verify Quality Assurance: Investigate the suppliers' quality control processes and request relevant test reports or certifications to confirm the coils meet your required standards.

    Negotiate Terms: Discuss and negotiate key terms, including pricing, delivery, and payment conditions, ensuring they align with your requirements.

    Order Placement: Finalize the purchase by confirming the order details, such as the coil specifications, quantities, and agreed terms.

    Arrange Payment: Agree on a secure payment method that suits both parties, ensuring all financial terms are clear and documented.

    Coordinate Shipping: Organize the logistics, including packaging, shipping, and customs clearance, to ensure the coils are delivered as expected.

    Inspect Upon Arrival: Upon receiving the coils, inspect the shipment for quality and accuracy, addressing any discrepancies with the supplier immediately.


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