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304L stainless steel sheet is a versatile, low-carbon variant of the 304 grade, prized for its exceptional weldability and resistance to corrosion, particularly in environments prone to sensitization. Here's a detailed breakdown of its key attributes and applications: Composition 304L is defined by its low carbon content (≤0.03%) , which minimizes carbide precipitation during welding, a critical advantage over standard 304 stainless steel. Its chemical makeup includes 18-20% chromium (Cr), 8-12% nickel (Ni), and trace elements like manganese (≤2%) and silicon (≤0.75%) . This alloy ensures a stable austenitic structure, providing excellent corrosion resistance and formability. Mechanical Properties Tensile Strength: 515-564 MPa (75,000-81,800 psi) Yield Strength (0.2% offset): ≥170 MPa (24,660 psi) Elongation: ≥40% , enabling deep drawing and complex forming without cracking. Hardness: HB ≤ 187, HRB ≤ 90 . Density: 8.03 g/cm³ (0.289 lbs/in³) . Thermal Conductivity: 16.2-16.3 W/m·K at 100°C . Magnetic Permeability: Nearly non-magnetic in the annealed state . Applications 304L's combination of corrosion resistance, weldability, and cost-effectiveness makes it suitable for diverse industries: Food & Beverage: Milk tanks, brewery equipment, and kitchen utensils, meeting FDA and LFGB standards . Medical Devices: Surgical instruments and implants due to biocompatibility . Construction: Architectural trim, roofing, and coastal structures (resistant to salt-laden air) . Chemical Processing: Storage tanks and pipelines for non-aggressive acids (e.g., ≤10% sulfuric acid) . Automotive: Exhaust systems and decorative trim . Marine (Non-Direct Seawater): Coastal infrastructure and boat fittings where chloride exposure is moderate . Welding & Fabrication Welding Techniques: TIG (Tungsten Inert Gas) welding is preferred due to precise heat control, minimizing distortion and carbide precipitation. Pulsed current TIG further reduces residual stress and improves bead quality . Filler Materials: Use 308L or 309L electrodes to match the low-carbon content and prevent corrosion at weld joints . Post-Weld Treatment: Generally unnecessary, but annealing (1050-1100°C followed by rAISId cooling) can restore ductility after heavy cold working . Surface Finishes Common finishes for 304L sheets include: 2B: Smooth, reflective finish for general purposes (e.g., kitchen appliances) . BA (Bright Annealed): Mirror-like surface for decorative applications . No. 4: Matte finish with light polishing, ideal for architectural trim . HL (Hairline): Brushed finish for scratch resistance and easy cleaning (e.g., countertops) . Embossed: Textured surfaces for grip or aesthetics . Price & Availability Cost: In 2025, prices range from $15,300 to $24,000 per metric ton , depending on thickness, finish, and regional demand. For example, a 5.0mm-thick sheet may cost ~$15,300/ton, while thinner gauges (e.g., 0.3mm) can exceed $20,000/ton . Availability: Widely stocked by global suppliers like Bao Pu Steel (China), with standard sizes (e.g., 1000-2000mm width, 2000-6000mm length) and custom cuts available . Comparison with 316L While 304L offers excellent general corrosion resistance, 316L (with 2-3% molybdenum) is superior in chloride-rich environments (e.g., seawater, harsh chemicals). However, 304L is 15-30% cheaper and better suited for cost-sensitive applications where extreme durability isn't required. Key Considerations Limitations: Avoid direct contact with high-concentration chlorides (e.g., saltwater) or strong acids (e.g., concentrated sulfuric acid) . Certifications: Look for ISO 9001, SGS, and RoHS compliance for quality assurance . Storage: Store in dry, ventilated areas to prevent surface contamination and rust . In summary, 304L stainless steel sheets balance performance, affordability, and versatility, making them a top choice for industries where corrosion resistance and weldability are critical. Always consult material specifications (e.g., ASTM A240, EN 10088) for project-specific requirements.
Feature
430 Stainless Steel Strip
304 Stainless Steel Strip
Key Difference
Material Type
Ferritic (magnetic)
Austenitic (non-magnetic/weakly magnetic)
430 is attractable by magnets
Chromium Content
16-18%
18-20%
304 offers better corrosion resistance
Nickel Content
≤0.75%
8-10%
430 has significantly lower cost
Corrosion Resistance
Good (dry environments)
Excellent (chloride-containing environments)
430 is unsuitable for high-humidity/seawater environments
Price
Benchmark (100%)
Approximately 1.6x
430 provides higher cost-performance
Detailed Photos
Quality Control
Company Profile
Certifications
Exhibition
Packaging & Shipping
FAQ
Q1: Why choose us? A: Our company, as an internationally experienced and professionalsupplier, has been engaged in steel business for more than ten years. Wecan provide a variety of steel products with high quality to our clients.
Q2: Can you provide OEM/ODM service? A: Yes. Please feel free to contact us for more details
Q3:What is your terms of payment? A: 100% T/T advance. 30% T/T and balance against copy of documents. 30% T/T advance, balance L/C at sight.
Q4: Can we visit your factory? A: Warmly welcome. Once we have your schedule, we will arrange theprofessional sales team to follow up your case.
Q5: Can you provide sample? A: Yes. Sample is free for regular sizes, but the buyer needs to pay freightcost.
Q6: How long is your delivery time? A: Regular lead time is 15 to 30 days after receiving deposit.
Jiangsu Xinyuanxing Metal Products Co.,Ltd. is located in Wuxi, Jiangsu Province, on the coast of the beautiful Taihu Lake. It is located in China's stainless steel distribution center, with convenient transportation and complete processing facilities.
Pucheng is a pro...
Jiangsu Xinyuanxing Metal Products Co.,Ltd. is located in Wuxi, Jiangsu Province, on the coast of the beautiful Taihu Lake. It is located in China's stainless steel distribution center, with convenient transportation and complete processing facilities.
Pucheng is a pro...
