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309S Stainless Steel Strip

High-Temperature & Corrosion-Resistant

Product Name: 309S Stainless Steel Strip
Standard: ASTM A240, JIS G4305, GB/T 4237, EN 10088-2
Grade: 309S (UNS S30908, EN 1.4833)
Thickness: 0.05-150mm  (customizable)
Width: 800mm (Maximum upper limit) (customizable)
Surface Finish: 2B, BA, No.4, HL
Tensile Strength: ≥ 515 MPa
Yield Strength (0.2% Offset): ≥ 205 MPa
Elongation: ≥ 40% (in 50mm)
Hardness (Brinell): ≤ 217 HBW
Density: 7.98 g/cm³
MOQ: 1 Ton

Free Samples Available!
Experience the quality of our products firsthand—request your free sample today. We’re here to help and welcome your inquiries.

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Premium 309S Stainless Steel Strip for High-Temperature Applications

TISCO Steel Group (Jiangsu) Co., Limited is a trusted supplier and distributor of premium stainless steel products, partnering directly with leading mills such as TISCO, Tsingshan, BAOSTEEL, and ANSTEEL. With years of industry expertise, we ensure that every product meets the highest international standards and is backed by full traceability and Mill Test Certification (MTC).

Our 309S Stainless Steel Strip is specifically designed for high-temperature and corrosive environments. This austenitic chromium-nickel stainless steel offers exceptional oxidation resistance and strength at elevated temperatures (up to 980°C / 1800°F), making it ideal for applications such as furnace parts, heat exchangers, boiler components, and thermal processing systems. While 309S provides excellent performance in extreme conditions, it is less formable than lower-grade austenitic steels like 304 and may come at a higher cost due to its alloy content. However, its durability and resistance to carburization make it a cost-effective choice for long-term high-temperature use.

We offer customizable widths, thicknesses, and surface finishes to meet your specific requirements, along with responsive technical support and global logistics. Whether you need a small batch for prototyping or large-volume orders for production, we provide reliable service and competitive pricing.

Common Surface Treatments

Product Detail Sheet

Product Name309S Stainless Steel Strip
Processing TechniquesAustenitic,Ferritic,Martensitic,Duplex,Cold Rolling,Hot Rolling
Grade201, 202, 301, 304, 304L, 309S, 310S, 316, 316L, 321, 409, 410, 410S, 430, 630, 2205, 2507 etc
Austenitic stainless steel200 Series: 201, 202
300 Series: 304, 304L, 309S, 310S, 316, 316L, 316Ti, 317L, 321, 347
Ferritic stainless steel409L, 430, 436, 439, 441, 444, 446
Martensitic stainless steel410, 410S, 416, 420J1, 420J2, 431,440,17-4PH
Duplex and special stainless steelS31803, S32205, S32750, 630, 904L
StandardASTM, GB,DIN, JIS etc
SurfaceN0.1, N0.4, 2D, 2B, HL, BA, 6K, 8K, etc
Delivery time3 to 15 days, subject to the customer and quantity
PackagingStandard export package
MOQ1 Ton
SampleFree sample application

Common Chemical Properties

UNSASTMENJISC%Mn%P%S%Si%Cr%Ni%Mo%
S201002011.4372SUS201≤0.155.5-7.5≤0.06≤0.03≤1.0016.0-18.03.5-5.5–
S202002021.4373SUS202≤0.157.5-10.0≤0.06≤0.03≤1.0017.0-19.04.0-6.0–
S301003011.4319SUS301≤0.15≤2.00≤0.045≤0.03≤1.0016.0-18.06.0-8.0–
S304003041.4301SUS304≤0.08≤2.00≤0.045≤0.03≤0.7518.0-20.08.0-10.5–
S30403304L1.4306SUS304L≤0.03≤2.00≤0.045≤0.03≤0.7518.0-20.08.0-12.0–
S30908309S1.4833SUS309S≤0.08≤2.00≤0.045≤0.03≤0.7522.0-24.012.0-15.0–
S31008310S1.4845SUS310S≤0.08≤2.00≤0.045≤0.03≤1.5024.0-26.019.0-22.0–
S316003161.4401SUS316≤0.08≤2.00≤0.045≤0.03≤0.7516.0-18.010.0-14.02.0-3.0
S31603316L1.4404SUS316L≤0.03≤2.00≤0.045≤0.03≤0.7516.0-18.010.0-14.02.0-3.0
S31703317L1.4438SUS317L≤0.03≤2.00≤0.045≤0.03≤0.7518.0-20.011.0-15.03.0-4.0
S321003211.4541SUS321≤0.08≤2.00≤0.045≤0.03≤0.7517.0-19.09.0-12.0–
S347003471.455SUS347≤0.08≤2.00≤0.045≤0.03≤0.7517.0-19.09.0-13.0–
S405004051.4002SUS405≤0.08≤1.00≤0.04≤0.03≤1.0011.5-14.5≤0.60–
S409004091.4512SUS409≤0.08≤1.00≤0.045≤0.03≤1.0010.5-11.75≤0.50–
S430004301.4016SUS430≤0.12≤1.00≤0.040≤0.03≤0.7516.0-18.0≤0.60–
S434004341.4113SUS434≤0.12≤1.00≤0.040≤0.03≤1.0016.0-18.0––
S444004441.4521SUS444L≤0.025≤1.00≤0.045≤0.03≤1.0017.5-19.5≤1.00–
S40300403–SUS403≤0.155.5-7.5≤0.04≤0.03≤0.5011.5-13.0≤0.60–
S4100004101.40006SUS410≤0.15≤1.00≤0.035≤0.03≤1.0011.5-13.5≤0.60≤1.00
S420004201.4021SUS420J10.16~0.25≤1.00≤0.04≤0.03≤1.0012.0-14.0≤0.75≤1.00
S440A440A1.4028SUS440A0.60~0.75≤1.00≤0.04≤0.03≤1.0016.0-18.0–≤0.75
S32750SAD25071.441 ≤0.03≤1.2≤0.035≤0.02≤0.8024.0-26.06.0-8.03.0-5.0
S31803SAF22051.4462 ≤0.03≤2.0≤0.03≤0.02≤1.0021.0-23.04.0-6.52.5-3.5
N08904904L1.4539 ≤0.0.3≤2.0≤0.035≤0.03≤1.0018.0-20.023.0-25.03.0-4.0

Stainless Steel Material Properties

GradesTensile Strength（ksi）Yield strength（ksi）2-inch Elongation (%)Section Shrinkage (%)Brinell Hardness
301110406070165
30290405570150
30390355055160
30485355570150
304L80305570140
31685356070150
316L78305565145
32185355565150
41075403570155
41675403065155
420955025–241
430F80452550165
15-516014515–330
17-4 (Condition A)1501101045332

Packaging & Shipping

📦 Advanced Protective Packaging
Every stainless steel product undergoes a meticulous, multi-layer packaging process designed to endure complex logistics challenges. We utilize VCI (Vapor Corrosion Inhibitor) rust-inhibiting film, reinforced steel-edge protectors, and customized wooden crates to prevent moisture damage, deformation, and handling accidents. Each package is clearly marked with product details and barcodes for full traceability and operational safety—guaranteeing your order arrives in perfect condition.

🚢 Trusted Shipping Partnerships
We collaborate with globally recognized container lines including ONE, ZIM, MSC, MAERSK, and COSCO, providing flexible and reliable freight solutions to major ports across North America, Europe, Southeast Asia, and beyond. Whether your needs require FOB, CIF, or EXW terms, we manage booking, documentation, and customs clearance to ensure seamless door-to-door delivery.

⏱️ On-Time Global Delivery
With established relationships with tier-1 carriers and experienced project logistics teams, we deliver on commitment—on schedule, on specification, and within budget. You receive not just premium stainless steel, but a logistics experience built on reliability and global execution capability.

Industry Application

🔗 The Value of Stainless Steel
Stainless steel is globally recognized for its outstanding corrosion resistance, strength, and adaptability—serving as an essential material across sectors such as construction, medical equipment, automotive manufacturing, and food processing. Yet, sourcing the appropriate grade involves navigating intricate specifications, diverse international standards, and unpredictable supply chain dynamics.

⚙️ How TISCO Simplifies Sourcing
At TISCO Steel Group (Jiangsu) Co., Limited, we streamline stainless steel procurement. As your dedicated supply partner, we deliver customized solutions—from precise material recommendations and fully certified quality assurance to tailored processing and dependable global shipping—all designed to match your project’s exact needs.

📞 Connect with Us
Explore our product portfolio online, request a personalized quote, or consult directly with our technical specialists. Let TISCO provide the reliable stainless steel solution your project deserves.

FAQ

1. What is the primary use of 309S stainless steel strip?
It is commonly used in high-temperature applications such as furnace components, heat treatment equipment, and boiler parts due to its excellent oxidation resistance.

2. Can 309S stainless steel be used in welding applications?
Yes, 309S is known for its good weldability and is often used as a filler material for welding dissimilar metals.

3. What is the maximum service temperature for 309S?
It can withstand continuous temperatures up to 980°C (1800°F) and intermittent temperatures up to 1090°C (2000°F).

4. Does 309S stainless steel resist corrosion?
Yes, it offers good resistance to oxidation, sulfidation, and other forms of high-temperature corrosion.

5. Is 309S magnetic?
Like other austenitic stainless steels, 309S is generally non-magnetic in its annealed state.

6. Can you provide custom sizes and finishes?
Yes, we offer customized widths, thicknesses, and surface finishes (e.g., 2B, BA, No.4) to meet your specifications.

7. Do you provide material certifications?
Yes, all our products come with Mill Test Certificates (MTC) ensuring compliance with international standards.

8. What is the minimum order quantity (MOQ)?
Our MOQ starts at 1 ton, but we accommodate smaller orders for sampling and testing.

9. How does 309S compare to 304 and 310S?
309S has higher chromium and nickel content than 304, offering better high-temperature performance. It has slightly lower nickel than 310S, making it a cost-effective alternative for many applications.

10. Do you offer free samples?
Yes, we provide free samples so you can verify quality and suitability before placing a bulk order.

Additional Services

We provide value-added services including rough machining, heat treatment, cutting, machining, rolling, welding, and surface treatment to ensure your finished product is delivered ready for finishing. All forgings are rough machined according to your specifications and include Mill Test Reports (MTR), Mechanical and Physical Property Reports, as well as Ultrasonic, X-Ray, and Non-Destructive Testing (NDT) reports (as ordered or specified).

By choosing TISCO Steel Group (Jiangsu) Co., Limited, you will receive professional solutions tailored to your needs.

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