GB/T 4237 06Cr23Ni13（309S）Stainless Steel Plate Supplier

06Cr23Ni13 Stainless Steel Coil & Plate | GB/T 4237 06Cr23Ni13（309S) Stainless Steel Sheet Manufacturer & Exporter – Gangsteel

Gangsteel is a leading manufacturer and global exporter of GB/T 4237 06Cr23Ni13 stainless steel hot-rolled coils, plates, and wide heavy plates.Internationally recognized as Grade 309S (low-carbon stabilized version of 309), 06Cr23Ni13 is a high-chromium, high-nickel austenitic stainless steel specifically engineered for excellent oxidation resistance, scaling resistance, and high-temperature strength in continuous service up to 1000°C (1832°F) and intermittent service up to 1038°C (1900°F).

With 22–24% Cr and 12–15% Ni, 309S forms a very stable and adherent chromium oxide scale that provides superior protection against oxidation, carburization, and cyclic thermal fatigue compared to lower-alloy grades like 304 or 316. The low carbon content (≤0.08%) enhances weldability and reduces the risk of intergranular corrosion after welding or prolonged high-temperature exposure.

Produced under GB/T 4237-2015 (Stainless Steel Hot-Rolled Sheets and Strips), Gangsteel supplies 06Cr23Ni13 in thicknesses from 2 mm to 500 mm and widths up to 4200 mm — one of the widest hot-rolling capabilities available worldwide. Our products are delivered in standard hot-rolled finishes No.1 (annealed & pickled) and 2D (annealed & pickled dull) and are exported globally to petrochemical, power generation, furnace construction, heat treatment, cement kiln, waste incineration, and high-temperature equipment industries.

Why Choose Gangsteel for 06Cr23Ni13 (309S) Hot-Rolled Stainless Steel?

Gangsteel’s wide heavy-plate rolling mills enable single-piece production of large radiant tubes, furnace muffles, annealing covers, retorts, and superheater panels, minimizing welds and maximizing service life in extreme high-temperature oxidizing environments. We maintain strict control over carbon and annealing to ensure consistent oxidation resistance and creep strength.

Chemical Composition of GB/T 4237 06Cr23Ni13

Standard Chemical Composition Table

Gangsteel maintains high Cr/Ni levels and low carbon for superior scaling, carburization, and cyclic oxidation resistance.

Mechanical Properties

Mechanical Properties Table (Annealed Condition)

309S maintains useful strength and creep resistance at elevated temperatures (superior to 304/316).

Physical Properties

Physical Properties Table

Equivalent Materials Comparison Table

Key Insight: 06Cr23Ni13 (309S) offers better oxidation and carburization resistance than 304/316 due to higher Cr/Ni content.

Manufacturing Process: Hot Rolled at Gangsteel

Gangsteel's hot-rolling process for 06Cr23Ni13 includes:

1. Electric arc furnace + AOD refining → precise high-Cr/Ni low-C control
2. Continuous casting into wide slabs
3. Reheating to 1150–1250°C
4. Hot rolling on wide heavy-plate mills (up to 4200 mm width)
5. Controlled cooling, leveling, and descaling
6. Solution annealing + pickling for No.1 finish or shot blasting + pickling for 2D finish
7. Edge trimming, coil splitting, or cut-to-length

Thickness range: 2 mm – 500 mm Width range: up to 4200 mm Length: up to 18 m (plate) or coil form

Finishes: No.1 (annealed & pickled), 2D (annealed & pickled dull)

Available Forms, Sizes, and Specifications

• Hot-rolled coils: 2.0–25.0 mm thick, up to 4200 mm wide
• Hot-rolled plates: 2.0–500 mm thick, up to 4200 mm wide × 18 m long
• Cut-to-size plates, slit coils, custom blanks

All compliant with GB/T 4237-2015; optional third-party certification (SGS, TUV, BV).

Key Applications of 06Cr23Ni13 (309S) Hot-Rolled Products

• Annealing covers, radiant tubes, and muffles in heat treatment furnaces
• Petrochemical reformers, crackers, and pyrolysis coils
• Boiler tube supports, superheater components
• Cement kiln preheaters and calciners
• Waste incinerators and high-temperature exhaust systems
• Power generation components exposed to oxidizing atmospheres

Advantages of Choosing 06Cr23Ni13 (309S)

• Excellent oxidation and scaling resistance up to 1000°C continuous
• Good resistance to carburization and sulfidation
• Moderate creep and high-temperature strength
• Weldable with low carbon for reduced intergranular corrosion risk
• Good formability and fabricability for complex heat-resistant parts
• Cost-effective high-temperature grade vs. nickel alloys
• Wide acceptance in petrochemical and furnace industries

Corrosion and Oxidation Resistance

High Cr/Ni content forms a stable oxide scale; excellent in oxidizing atmospheres, resists carburization/sulfidation. Low carbon minimizes sensitization. Oxidation resistance ~1000°C continuous, ~980°C cyclic.

Weldability and Fabrication

Good weldability with TIG/MIG; low carbon reduces sensitization. Use ER309/ER309L fillers. High ductility supports forming; annealing may be needed post-weld for critical uses.

Why Choose Gangsteel for GB/T 4237 06Cr23Ni13?

• Industry-leading width (up to 4200 mm) and thickness (up to 500 mm)
• Full traceability and third-party inspection
• Competitive pricing with large-scale production
• Fast lead times and global export expertise
• Technical support for high-temp oxidation, creep design, and welding

Quality Assurance and Certifications

Every heat is tested for chemistry, mechanical properties, surface quality, and dimensions. Full MTRs (EN 10204 3.1) and third-party certification available.

Packaging, Shipping, and Logistics

Coils eye-to-wall/eye-to-sky on steel pallets; plates bundled with skids; seaworthy export packaging with waterproof wrapping and edge protection.

FAQ

Q1: What is the main difference between 309S (06Cr23Ni13) and 310S (06Cr25Ni20)?

A: 309S has lower Cr (22–24%) and Ni (12–15%) than 310S (24–26% Cr, 19–22% Ni), making 310S better for higher temperatures and more severe carburizing environments; 309S is sufficient for many furnace applications and is slightly more economical.

Q2: Can 06Cr23Ni13 be used in reducing or carburizing atmospheres?

A: Yes, it performs well in carburizing and mildly sulfidizing environments due to high Cr/Ni; for severely reducing conditions, nickel alloys (e.g., 800H) may be better.

Q3: What finishes are available under GB/T 4237 for hot-rolled 309S?

A: Standard finishes are No.1 (annealed & pickled) and 2D (annealed & pickled dull). No.1 is most common for further processing.

Q4: What is the maximum width and thickness Gangsteel can produce for 06Cr23Ni13?

A: Up to 4200 mm wide and 500 mm thick in hot-rolled plates; coils typically 2–25 mm thick.

Q5: Is 309S weldable? What filler should be used?

A: Yes, good weldability. Use ER309 or ER309L fillers to match high-temperature properties.

Q6: Does Gangsteel offer third-party inspection for GB/T 4237 309S material?

A: Yes — SGS, TUV, BV, or customer-nominated agencies are welcome at any stage.

Q7: What is the lead time for hot-rolled 06Cr23Ni13 coils or plates?

A: Standard sizes from stock: 7–15 days. Custom wide/heavy plates: 25–45 days depending on thickness and quantity.

Q8: Can Gangsteel provide 309S with BA or 2B finish?

A: Hot-rolled material is No.1 or 2D. For BA or 2B, we supply cold-rolled versions under GB/T 3280.

Keywords: 06Cr23Ni13, 309S stainless steel, GB/T 4237 309S, hot rolled 309S plate, 309S stainless coil, 309S sheet manufacturer

Contact Gangsteel today for real-time pricing, stock availability, samples, or custom specifications of GB/T 4237 06Cr23Ni13 (309S) stainless steel hot-rolled coils, plates, and strips. Let us support your next high-temperature furnace or petrochemical project with premium heat-resisting stainless steel solutions.