316L Stainless Steel Coil | Precision-Crafted for Extreme Corrosion Resistance
✓ Immune to Sensitization: Ultra-low carbon eliminates carbide precipitation, achieving seamless welds without post-weld heat treatment.
✓ Chloride Dominance: PREN ≥32, surviving 5,000+ hours in ASTM G48 Method D seawater testing.
✓ Acid Battleground Ready: Resists 50% sulfuric acid at 30°C (86°F) and 20% nitric acid at 80°C (176°F).
✓ Hygienic Integrity: Electropolished coils achieve Ra ≤0.3μm, compliant with FDA CFR 21 and EHEDG guidelines.
316L Stainless Steel Coil (UNS S31603)
Optimized for weld-intensive and chloride-rich environments, 316L stainless steel coil combines ultra-low carbon content (≤0.03%) with molybdenum-enhanced chemistry (2.5-3%) to deliver unmatched resistance to pitting, crevice corrosion, and sensitization. Certified to ASTM A240/A480 and NACE MR0175 standards, this stabilized austenitic alloy is the gold standard for pharmaceutical, marine, and chemical processing applications requiring long-term reliability under aggressive conditions.
– Thickness: 0.3mm–10.0mm (±0.015mm precision for cold-rolled coils)
– Width: 400mm–2000mm (custom slitting tolerance ±0.25mm)
– Coil Parameters: ID: 508mm/610mm | Max OD: 2500mm | Weight: 2-22 tons
– Mechanical Properties: Yield Strength ≥170 MPa | Tensile Strength ≥485 MPa | Elongation ≥50%
| Parameter Category | Value/Description |
|---|---|
| Material Grade | UNS S31603 (per ASTM A240) |
| Composition (%) | C≤0.03, Cr 16.0-18.0, Ni 10.0-14.0, Mo 2.0-3.0, Mn≤2.0, Si≤1.0, P≤0.045, S≤0.03, N≤0.10 |
| Tensile Strength (MPa) | ≥485 (Annealed) |
| Yield Strength (MPa) | ≥170 (Annealed) |
| Elongation (%) | ≥40 (50mm gauge length) |
| Hardness | Brinell (HB): ≤217; Rockwell (HRB): ≤95 (Annealed) |
| Density (g/cm³) | 8.03 |
| Melting Range | 1375-1400℃ |
| Thermal Conductivity (W/m·K) | 16.3 (20℃) |
| Thermal Expansion (10⁻⁶/℃) | 16.0 (20-100℃) |
| Electrical Resistivity (Ω·m) | 0.74×10⁻⁶ (20℃) |
| Elastic Modulus (GPa) | 193 |
| Magnetic Properties | Non-magnetic (Annealed) |
| Corrosion Resistance | Exceptional resistance to chlorides (seawater, salt spray), sulfuric acid, phosphoric acid, and organic acids; superior pitting/crevice corrosion resistance (PREN≥26) |
| Heat Treatment | Annealing: 1010-1150℃ followed by rapid cooling (water or air quenching) |
| Surface Finishes | 2B (Cold-rolled bright annealed), BA (Bright annealed), No.4 (Brushed), No.8 (Mirror polish), Pickling & Passivation |
| Coil Dimensions | Thickness: 0.3mm-6.0mm; Width: 600mm-2000mm; Inner Diameter: 508mm/610mm (standard) |
| Standards | ASTM A240/A240M, JIS G4304, EN 10088-2, GB/T 4237 |
| Applications | Marine engineering components, chemical reactors, medical implants, desalination systems, food processing equipment, pharmaceutical tanks |
316L Stainless Steel Coil Applications
| Industry | Critical Uses | 316L Coil Advantage |
|---|---|---|
| Pharmaceutical | Bioreactor liners, sterile tubing | Passes ASTM E2906-13 electropolishing standards. |
| Marine & Offshore | Seawater piping, subsea valve components | ASTM A923-C certified for chloride stress corrosion. |
| Chemical Processing | HCl storage vessels, acid scrubbers | 0.005mm/year corrosion rate in 10% HCl at 40°C. |
| Food Production | Brine tanks, high-pressure homogenizers | NSF/ANSI 51 compliance; withstands CIP/SIP cleaning. |
316L Stainless Steel Coil Product Packaging
316L stainless steel coils are packaged in triple-sealed anti-static polyethylene packaging to prevent scratches, dust and oxidation during transportation. Each package is lined with VCI (vapor rust inhibitor) paper, which releases protective molecules to prevent rust in humid or salty environments, ideal for coastal construction or chemical industries. Bulk orders are secured on ISO-certified heavy-duty pallets with reinforced steel edges and weather-resistant shrink wrap to ensure stability for large-volume shipments. Environmentally conscious customers can choose FSC-certified recycled cardboard boxes or reusable aluminum packaging boxes, which can reduce landfill waste by 90%.
Anti-rust packaging
VCI gas phase anti-rust film + desiccant (12 months moisture-proof for sea transportation)
Reinforcement method
Steel strapping + wooden pallet (load-bearing ≤ 5 tons)
Surface protection
Polyethylene film layered isolation (anti-scratch)
Customization options
IPPC fumigation wooden box (compliant with ISPM15 standard)
Why Choose Us
Where Precision Meets Partnership，25 years of focus on metal material science，Not only a supplier, but also your engineering consultant，Fast and zero compromise，Sustainable trust cycle。
Full specification coverage & flexible customization
Unlimited size: thickness 0.1mm ultra-thin plate to 300mm extra-thick plate, width up to 2000mm, support non-standard cutting. Various surface treatments: 2B, BA mirror, brushed (No.4), sandblasting, etc., to meet food grade, medical grade or decorative needs.
Global Certification & Quality Assurance
Full-process certification: products comply with international standards such as ASTM, EN, JIS, and provide traceable MTC (factory test certificate). Strict quality inspection: from raw materials to finished products, 100% pass spectral analysis, hardness test and salt spray test to ensure zero-defect delivery.
Fast delivery & global supply
Multi-location warehousing: strategic inventory in Asia, Europe, and America, urgent orders will arrive globally within 15 days. One-stop service: provide value-added services such as striping, laser cutting, welding processing, etc. to shorten customer production cycle.
Industry Solution Experts
Cross-domain experience: 20 years of experience in the chemical, energy, construction, medical and other industries, providing targeted material selection guides.
Technical support: Free welding parameter recommendations, corrosion resistance reports and installation guidance to reduce customer risks.
Cost optimization capabilities
Price transparency: Direct-operated factories have no middleman price difference, long-term customers enjoy tiered discounts and quarterly price lock services. Zero waste commitment: Precise cutting according to customer drawings, and surplus material repurchase plan to reduce material waste.
Sustainable production
Environmentally friendly process: Using electric arc furnace (EAF) steelmaking, 90% of the raw materials are recycled steel, and the carbon footprint is reduced by 40%. Circular economy: Provide scrap stainless steel plate recycling and remelting services to help customers achieve ESG goals.
316L Stainless Steel Coil Shipping
Sea transport
40HQ container (loading capacity 28 tons) / bulk carrier (LCL minimum 1 ton)
Air transport
reach major airports around the world within 7 days (DDP/DAP terms)
Land transport
door-to-door within China (qualification for dangerous goods transportation)
Our Services
We guarantee global door-to-door delivery within 7–15 business days via partnerships with DHL, Maersk, and UPS.
FAQ
Q1: Why choose 316L over standard 316 coils?
A: 316L’s 0.03% carbon max eliminates weld decay in thick sections (>8mm). Essential for ASME Section VIII pressure vessel certifications.
Q2: How to prevent surface contamination in humid regions?
A: Specify our HydroShield™ packaging – dual-layer PE film with silica gel desiccant (humidity <15% inside).
Q3: Are your coils compliant with EU MDR for medical devices?
Yes: All medical-grade coils include:
– ISO 13485:2016 certification
– USP Class VI biocompatibility report
– Full material traceability per EU MDR Annex VI
Q4: What’s the minimum bend radius for cold forming?
For 0.5mm thickness: 1.5x thickness (0.75mm) with BA finish. Consult our free forming simulation service.
Q5: How to verify authenticity upon delivery?
A: Use our proprietary VeriSteel™ app – scan QR codes to access real-time PMI (Positive Material Identification) data.
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