304L Stainless steel plate

304L Stainless Steel Plate (Export Grade)
Product Overview
304L stainless steel plate is a low-carbon austenitic stainless steel variant of the classic 304 grade, designed for demanding industrial and architectural applications requiring enhanced corrosion resistance and weldability. Compliant with international standards including ASTM A240, JIS G4305, EN 1.4307, and GB/T 3280, it is the preferred material for cross-border projects in chemical processing, marine engineering, food processing, and high-purity equipment industries worldwide. With a carbon content ≤0.03% (lower than 304’s ≤0.08%), 304L eliminates the risk of intergranular corrosion after welding or high-temperature processing, ensuring long-term structural integrity in harsh environments.
Core Advantages
1. Superior Corrosion Resistance
- Low carbon content (≤0.03%) prevents intergranular corrosion (IGC) post-welding, making it ideal for welded structures (pipelines, tanks, pressure vessels) in corrosive environments.
- Excellent resistance to atmospheric oxidation, seawater, weak acids (sulfuric acid, phosphoric acid), weak alkalis, and organic solvents; suitable for coastal, marine, and chemical processing scenarios.
- Enhanced resistance to pitting and crevice corrosion compared to standard 304, ensuring durability in chloride-rich environments (e.g., offshore platforms, coastal buildings).
2. Exceptional Weldability & Processability
- Compatible with all standard welding methods (TIG, MIG, arc welding, resistance welding) without pre-heating or post-weld heat treatment, reducing project costs and production time.
- Excellent formability: Easily cut, bent, stamped, deep-drawn, and polished; maintains structural stability even after complex processing.
- Machinability: Performs well in turning, milling, and drilling operations with proper tooling, suitable for custom component manufacturing.
3. Stable Mechanical & Physical Properties
- Maintains high tensile strength (≥485MPa) and ductility (elongation ≥40%) at room temperature; retains performance in low-temperature (-270℃) and moderate high-temperature (up to 870℃) environments.
- Non-magnetic in annealed state, with minimal magnetic response after cold working, suitable for applications requiring non-magnetic properties (electronic equipment, medical devices).
- Food-grade safety: Meets FDA, EU 1935/2004, and GB 4806 standards, non-toxic and odorless for food contact applications.
4. Cost-Effective & Durable
- Balances high performance and cost, offering a cost-efficient alternative to higher-grade stainless steels (e.g., 316L) for non-severe corrosive environments.
- Low maintenance: Smooth surface resists dirt accumulation and requires no regular anti-corrosion treatment, reducing long-term operational costs for overseas clients.
- 100% recyclable, aligning with global environmental sustainability requirements.
Technical Specifications

Chemical Composition (ASTM A240 Standard)
C ≤0.03%, Si ≤1.00%, Mn ≤2.00%, P ≤0.045%, S ≤0.030%, Cr: 18.00-20.00%, Ni: 8.00-12.00%, N ≤0.10%, Cu ≤0.75%, Mo ≤0.75%
Mechanical Properties (Annealed Condition)
- Yield Strength (σs): ≥170MPa
- Tensile Strength (σb): 485-655MPa
- Elongation (δ5): ≥40%
- Hardness: ≤201HB / ≤92HRB / ≤217HV
- Impact Strength (KV, -20℃): ≥100J
Application Fields
1. Chemical & Petrochemical Industry
- Pressure vessels, storage tanks, pipelines, and heat exchangers for handling weak acids, alkalis, and organic chemicals.
- Pharmaceutical equipment (reaction kettles, mixing tanks) requiring high purity and corrosion resistance.
2. Marine & Offshore Engineering
- Ship hull components, offshore platform railings, marine pipelines, and coastal infrastructure (resistant to seawater corrosion and salt spray)
3. Construction & Decoration
- Coastal building curtain walls, handrails, elevator panels, and architectural cladding (maintains aesthetics in harsh outdoor environments).
- High-humidity areas (swimming pools, bathrooms) where corrosion resistance is critical
4. Food & Beverage Industry
- Food processing equipment (conveyors, storage tanks, brewing machinery), dairy processing lines, and stainless steel tableware (meets food contact safety standards).
5. Industrial Manufacturing
- Auto parts (exhaust systems, decorative trims), electronic equipment casings, and precision machinery components (non-magnetic and corrosion-resistant).
- Water treatment systems (pipelines, filters) for municipal and industrial use.
Quality Assurance
- Strict quality control system: Each batch undergoes chemical composition analysis (spectrometer), mechanical property testing (tensile, hardness, impact), corrosion resistance testing (salt spray test), and surface inspection (no scratches, pits, or oxidation).
- Certifications: ISO9001, ISO14001, CE, and FDA; Material Test Report (MTR) with batch number provided for each shipment, ensuring full traceability.
- Compliance with international environmental standards: RoHS and REACH compliant, free of heavy metals and harmful substances.
Packaging & Shipping
- Packaging: Inner layer: Waterproof PE film; Middle layer: Pearl cotton or foam (to prevent scratches); Outer layer: Wooden pallets or steel frames (reinforced for long-distance sea transportation). Custom packaging available for special requirements (e.g., vacuum packaging for thin plates).
- Shipping Terms: FOB, CIF, CFR, EXW (flexible to meet global trade agreements); Port of loading: Shanghai, Ningbo, Qingdao, Shenzhen (China).
- Delivery Time: 3-7 working days for stock products; 10-20 working days for custom specifications (thickness, width, surface finish).
- Logistics Support: Cooperates with reputable international shipping companies (Maersk, MSC, COSCO) for sea freight; door-to-door air freight (DHL, FedEx, UPS) available for small batches.
Customization Services
- Specification Customization: Custom thickness (0.1mm-200mm), width (50mm-2000mm), and length (500mm-12000mm) with flexible minimum order quantities (MOQ: 100kg for small customizations, 1 ton for bulk orders).
- Surface Finish Customization: Special brushed grain, color coating (food-safe/industrial-grade), or embossed surface.
- Processing Services: Cutting (plasma, laser, water jet), bending, welding, drilling, punching, and CNC machining (provided with detailed technical drawings).
- OEM/ODM Services: Private label branding, customized packaging (multilingual printing), and batch-specific MTR customization.
Why Choose Our 304L Stainless Steel Plate?
- 20+ years of experience in stainless steel export, serving clients in 60+ countries (USA, Germany, Australia, Brazil, Middle East, Southeast Asia, etc.).
- Direct factory supply: No middlemen, offering competitive prices for bulk orders and transparent pricing structure.
- Professional technical support: 24/7 after-sales team provides material selection advice, welding guidance, and quality complaint handling.
- Flexible payment terms: T/T (30% deposit, 70% against B/L copy), L/C at sight, Western Union (for small orders),