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309S Stainless Steel Bar

TISCO & BAOSTEEL Supplier

Product Name: 309S Stainless Steel Bar
Standard: ASTM A276, ASTM A479, JIS G4303, GB/T 1220
Grade: 309S (UNS S30908, EN 1.4833)
Diameter: 5 – 800mm (customizable)
Surface Finish: Black, Peeled, Polished, Cold Drawn
Tensile Strength: ≥ 515 MPa
Yield Strength (0.2% Offset): ≥ 205 MPa
Elongation: ≥ 40% (in 50mm)
Hardness (Brinell): ≤ 187 HBW
Density: 8.0 g/cm³
MOQ: 1 Ton

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Experience Superior Heat Resistance with Our 309S Stainless Steel Bars

TISCO Steel Group (Jiangsu) Co., Limited is your trusted partner for premium stainless steel products. As an authorized distributor of leading mills, including TISCO, Tsingshan, BAOSTEEL, and ANSTEEL, we guarantee material authenticity, traceability, and compliance with international standards. Our commitment to quality ensures that every product meets rigorous performance demands for industrial applications worldwide.

Why Choose 309S Stainless Steel?

The 309S Stainless Steel Bar is a high-alloy austenitic stainless steel designed for extreme heat resistance. With elevated chromium and nickel content, it offers exceptional oxidation resistance up to 980°C (1800°F), making it ideal for high-temperature environments such as:

  • Furnace Components
  • Heat Exchangers
  • Boiler Parts
  • Thermal Processing Equipment

Unlike standard grades, 309S contains lower carbon content for improved weldability and reduced susceptibility to carbide precipitation. However, it is not recommended for use in chloride-rich environments where pitting or crevice corrosion may occur.

Customized Solutions

We provide customized sizing, cutting, and surface finishing services to meet your specific requirements. Backed by full Mill Test Certification (MTC) and responsive technical support, we ensure seamless procurement and reliable performance for your projects.

Get in Touch!

Request a quote today and experience the difference of working with a certified supplier of top-tier Chinese mills. Partner with TISCO Steel Group for your stainless steel needs and enjoy the assurance of quality and reliability.

Common Surface Treatments

Product Detail Sheet

Product Name309S Stainless Steel Bar
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 maximum service temperature for 309S stainless steel?
    It can be used continuously up to 980°C (1800°F) and intermittently up to 1035°C (1900°F).

  2. Can 309S be welded easily?
    Yes, its low carbon content minimizes carbide precipitation during welding, making it suitable for most welding methods.

  3. Is 309S stainless steel magnetic?
    No, it is austenitic and generally non-magnetic.

  4. Do you provide material certifications?
    Yes, all orders include Mill Test Certificates (MTC) verifying chemical composition and mechanical properties.

  5. What industries commonly use 309S bars?
    Heat treatment, petrochemical, power generation, and furnace manufacturing.

  6. Can you cut bars to custom lengths?
    Yes, we offer precision cutting and machining services to your specifications.

  7. What is the difference between 309 and 309S?
    309S has a lower carbon content (0.08% max) for better weldability and corrosion resistance after welding.

  8. What surface finishes are available?
    Black, peeled, turned, polished, or cold drawn (as required).

  9. What is your minimum order quantity (MOQ)?
    Standard MOQ is 1 ton, but we accommodate smaller orders for evaluation.

  10. How do you ensure corrosion resistance during shipping?
    We use VCI anti-rust paper and waterproof packaging to prevent damage during transit.

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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