GB/T 4237 022Cr19Ni10（304L) Stainless Steel Plate Supplier

022Cr19Ni10 Stainless Steel Coil & Plate | GB/T 4237 022Cr19Ni10（304L) Stainless Steel Sheet Manufacturer & Exporter – Gangsteel

Gangsteel is a leading manufacturer and international exporter of GB/T 4237 022Cr19Ni10 stainless steel hot-rolled coils, plates, and wide heavy plates. Known globally as Grade 304L (low-carbon variant of 304), 022Cr19Ni10 is the most widely used low-carbon austenitic stainless steel, offering excellent general corrosion resistance, outstanding weldability without sensitization risk, superior formability, and proven performance in food, chemical, pharmaceutical, architectural, and pressure vessel applications.

With ultra-low carbon (≤0.030%), it significantly reduces the risk of intergranular corrosion in the heat-affected zone after welding, making it the preferred choice over standard 304 (06Cr19Ni10) for welded structures, heavy fabrication, and corrosive service without post-weld annealing.

Produced under GB/T 4237-2015 (Stainless Steel Hot-Rolled Sheets and Strips), Gangsteel supplies 022Cr19Ni10 in thicknesses from 2 mm to 500 mm and widths up to 4200 mm — among the widest hot-rolling capabilities available worldwide. Our products are supplied in standard hot-rolled finishes No.1 (annealed & pickled) and 2D (annealed & pickled dull), and are exported globally to food processing, chemical equipment, heat exchangers, architectural cladding, rail transit, and pressure vessel industries.

This comprehensive product guide covers every aspect of our GB/T 4237 022Cr19Ni10 (304L) hot-rolled stainless steel — from chemical composition and mechanical properties to manufacturing process, equivalent materials comparison, applications, advantages, quality assurance, and frequently asked questions.

Introduction to 022Cr19Ni10 (304L) Stainless Steel

022Cr19Ni10 is the Chinese designation for Grade 304L, the low-carbon version of the world’s most popular stainless steel — 304 (06Cr19Ni10). The “022” prefix indicates carbon content ≤0.022% (max 0.030%), which prevents chromium carbide precipitation during welding or high-temperature exposure, preserving full corrosion resistance in the heat-affected zone (HAZ).

It retains the classic 18/8 composition (18% Cr, 8–10.5% Ni), delivering excellent general corrosion resistance in atmospheric, fresh water, mild acid/organic, and food environments, combined with outstanding formability, weldability, hygiene, and low-temperature toughness. Non-magnetic in the annealed state, 022Cr19Ni10 is the benchmark material for welded pressure vessels, food-grade equipment, and architectural applications requiring long-term durability.

Gangsteel produces 022Cr19Ni10 exclusively via hot rolling, delivering heavy-gauge wide plates and coils ideal for subsequent cold reduction, cutting, forming, welding, and fabrication in demanding industries.

Chemical Composition of GB/T 4237 022Cr19Ni10

Chemical Composition Table

Gangsteel maintains very low carbon and balanced Cr/Ni for maximum weld integrity and corrosion performance. Full chemical analysis and EN 10204 3.1 certificates are standard.

Mechanical Properties

In annealed condition per GB/T 4237:

Mechanical Properties Table (Annealed)

Moderate work hardening allows cold forming without excessive strength gain.

Physical Properties

Physical Properties Table

These properties support excellent performance in thermal cycling and hygienic applications.

Equivalent Materials Comparison Table

Key Insight: 022Cr19Ni10 (304L) provides superior weld-zone corrosion resistance than standard 304 due to ultra-low carbon.

Manufacturing Process: Hot Rolled at Gangsteel

Gangsteel's hot-rolling process for 022Cr17Ni7 includes:

1. Electric arc furnace + AOD refining → precise low-carbon 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.

Key Applications of 022Cr19Ni10 (304L) Hot-Rolled Products

• Food processing equipment (tanks, piping, conveyors)
• Chemical and pharmaceutical vessels
• Heat exchangers and pressure vessels
• Architectural cladding and structural components
• Railway and automotive welded parts
• Beer brewing, dairy, and beverage lines

Advantages of Choosing 022Cr19Ni10 (304L)

• Exceptional resistance to intergranular corrosion after welding
• Excellent general corrosion resistance in mild environments
• Outstanding formability, weldability, and hygiene
• Good strength and toughness from cryogenic to elevated temperatures
• Cost-effective for welded applications vs. stabilized grades
• Non-magnetic annealed; easy to clean and polish
• Wide global acceptance and recyclability

Corrosion and Oxidation Resistance

Forms stable Cr oxide layer; resists rust in fresh water, mild acids, organics, and atmospheres. Excellent in welded conditions due to low C; better than 304 in sensitization-prone scenarios. Oxidation resistance up to ~870°C intermittent.

Weldability and Fabrication

Outstanding weldability with TIG/MIG/resistance/laser; ultra-low carbon eliminates sensitization. Use ER308L fillers. High ductility supports complex forming.

Why Choose Gangsteel for GB/T 4237 022Cr19Ni10?

• 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 welding, forming, and application

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 304L (022Cr19Ni10) and standard 304?

A: 304L has ultra-low carbon (≤0.030%) to prevent sensitization during welding, offering better weld-zone corrosion resistance and no need for post-weld annealing in most cases.

Q2: Can 022Cr19Ni10 be used in coastal or chloride-containing environments?

A: Suitable for mild exposure, but for long-term marine or high-chloride service, 316L or 444 is recommended for superior pitting resistance.

Q3: What finishes are available under GB/T 4237 for hot-rolled 304L?

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 022Cr19Ni10?

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

Q5: Is 304L weldable? What filler should be used?

A: Yes, excellent weldability. Use ER308L or ER316L fillers for matching properties.

Q6: Does Gangsteel offer third-party inspection for GB/T 4237 304L material?

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

Q7: What is the lead time for hot-rolled 022Cr19Ni10 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 304L 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.

Contact Gangsteel today for real-time pricing, stock availability, samples, or custom specifications of GB/T 4237 022Cr19Ni10 (304L) stainless steel hot-rolled coils, plates, and strips. Let us support your next welded or hygienic project with premium low-carbon stainless steel solutions.