316/316L Stainless Steel Coils

Corrosion Resistance: Excellent resistance to pitting and crevice corrosion in chloride-containing environments, seawater, and aggressive chemical media, thanks to 2–3% molybdenum content. The low carbon 316L version provides enhanced resistance to intergranular corrosion after welding.

Superior Formability and Ductility: Excellent elongation (≥40%) allows for deep drawing, bending, stamping, and roll forming without cracking, suitable for complex part geometries.

Precise Dimensional Tolerances: Tight thickness tolerances (up to ±0.03mm for cold-rolled coils) ensure consistent material feeding for automated production lines.

Excellent Weldability: 316L grade ensures low carbon content for superior weld performance, with reduced risk of intergranular corrosion in welded fabrications. Suitable for TIG, MIG, laser, and resistance welding.

Smooth Surface Quality: Available in 2B (cold-rolled bright finish), BA (bright annealed), No.1 (hot-rolled annealed and pickled), No.4 (polished), HL (hairline), and mirror finishes.

High Mechanical Strength: Excellent tensile and yield strength with good ductility for structural fabrications and pressure vessel applications.

International Certifications: Coils can be certified by ABS, BV, DNV, LR, GL, RINA, CCS, KR, and NK, and comply with NORSOK standards for offshore projects.

These standards ensure that our 316/316L stainless steel coils meet global requirements for chemical composition, mechanical performance, dimensional tolerances, and testing methods for industrial and sanitary applications.

Both 316 and 316L stainless steel coils exhibit excellent corrosion resistance and mechanical properties. The lower carbon content in 316L minimizes carbide precipitation during welding, providing enhanced resistance to intergranular corrosion compared to standard 316, especially in welded fabrications and high-temperature service environments.

Heat Treatment Condition:
Both 316 and 316L stainless steel coils are normally supplied in the annealed and pickled condition for hot-rolled coils, or bright annealed for cold-rolled coils. Solution annealing at 1040–1080°C followed by rapid cooling restores full corrosion resistance, relieves internal stresses from rolling, and ensures optimal ductility for further forming operations.

Delivery Condition Options:

Hot-Rolled (HR): As-rolled, annealed and pickled (No.1 finish), or black hot-rolled

Cold-Rolled (CR): 2B finish (bright cold-rolled), 2D finish (dull cold-rolled), BA finish (bright annealed)

Thickness Tolerances (Cold-Rolled – ASTM A480):

Width Tolerances (Cold-Rolled – ASTM A480):

Flatness Tolerances:

Raw Material Selection: High-quality 316/316L stainless steel slabs or billets from certified mills (Baosteel, TISCO, POSCO, Outokumpu) with certified chemical composition and traceability.

Reheating: Slabs heated to 1200–1250°C in reheating furnaces for hot rolling.

Hot Rolling: Heated slabs passed through roughing and finishing stands to reduce thickness to 3-12mm (hot-rolled coils).

Annealing: Hot-rolled coils undergo solution annealing at 1040–1080°C to restore corrosion resistance.

Pickling: Removal of oxide scale using mixed acid (HNO₃ + HF).

Cold Rolling: Hot-rolled coils further reduced to 0.3-6mm through multiple cold rolling passes.

Bright Annealing: Cold-rolled coils annealed in hydrogen atmosphere for BA finish (optional).

Skin Pass (Temper Rolling): Light cold rolling to improve flatness and surface finish.

Slitting (Optional): Wide coils cut into narrower strips per customer requirements.

Inspection & Testing: Dimensional check, PMI, mechanical testing, surface inspection.

Coiling & Packaging: Coiled to specified ID/OD, wrapped with moisture barrier, steel strapped.

Chemical Analysis: Spectrometer or PMI verification of alloy elements (Cr, Ni, Mo).

Mechanical Testing: Tensile, yield, elongation, hardness per ASTM A370.

Dimensional Inspection: Thickness, width, flatness, coil ID/OD using calibrated instruments.

Surface Inspection: Visual check for surface defects, scratches, pits, roll marks.

Intergranular Corrosion Test: ASTM A262 Practice E for 316L.

Ferrite Content: For duplex grades only.

Pitting Resistance: ASTM G48 upon request.

Positive Material Identification (PMI): Upon customer request.

Third-Party Inspection: SGS, BV, DNV, TUV available upon customer request.

Chemical & Petrochemical Industry: Chemical storage tanks, reactor vessels, process piping, acid handling equipment, pressure vessels, scrubbers.

Marine & Offshore Engineering: Offshore platform structural components, shipbuilding panels, seawater piping, ballast tank linings (ABS, BV, DNV, LR certified).

Pharmaceutical Equipment: Cleanroom panels, pharmaceutical vessels, sterile process equipment, WFI storage tanks, bioreactor shells.

Food & Beverage Industry: Dairy processing tanks, brewery fermentation vessels, food storage silos, pasteurizers, CIP system components.

Heat Exchangers: Shell and tube heat exchanger shells, plate heat exchanger plates, condenser shells.

Desalination Plants: Evaporator shells, brine heater components, high-pressure reverse osmosis vessels.

Water Treatment: Filtration equipment, aeration tanks, distribution basins, chemical feed tanks.

Architectural & Construction: Building cladding, roofing panels, curtain walls, handrails, elevator interiors, escalator trim.

Automotive & Transportation: Exhaust system components, fuel tanks, trim parts, railcar tanks.

Medical Devices: Surgical instrument trays, hospital equipment, sterilization containers.

Electronics: Electronic enclosures, battery cases, precision components.

Standard Packaging:

Coils wrapped with moisture-proof paper and VCI film

Outer steel strapping (4-8 straps per coil)

Wooden pallet or steel skid for coil protection

Plastic end caps for slit coils

Export cartons for small slit coils

Clear labeling with grade, heat number, dimensions, weight

Womic Steel's Shipping Strengths:

Direct cooperation with global shipowners – competitive freight rates.

Professional loading and securing teams prevent coil damage during transit.

Efficient document preparation (EN 10204 3.1 MTR, packing list, commercial invoice) minimizes customs delays.

Rapid delivery time – standard coils maintained in ready stock over 10,000 tons.

Continuous cargo tracking and after-sales follow-up.

1. What is the difference between 316 and 316L stainless steel coils?
The main difference is carbon content. 316L has lower carbon (≤0.03% vs ≤0.08%), which prevents carbide precipitation during welding and provides better resistance to intergranular corrosion. For welded fabrications, 316L is typically preferred.

2. What is the standard coil weight for 316 stainless steel coils?
Standard coil weights range from 5 to 15 metric tons for cold-rolled coils and 10 to 25 metric tons for hot-rolled coils. Custom coil weights available upon request.

3. Can you slit coils to custom widths?
Yes. We offer slitting services to produce narrow strips from 20mm to 600mm width. Tolerances for slit edges are ±0.5mm.

4. What surface finish is best for food processing equipment?
2B finish is standard for food processing. For direct food contact surfaces, No.4 (polished) or BA finish with Ra ≤ 0.5μm is recommended for cleanability.

5. Are your coils suitable for deep drawing applications?
Yes. 316/316L coils offer excellent ductility with elongation ≥40%, suitable for deep drawing, stamping, and severe forming operations.

6. Do you provide material test reports (MTR) and certification?
Yes, every shipment includes EN 10204 Type 3.1 MTR with chemical analysis and mechanical properties. Third-party inspection (SGS, BV, DNV) available upon request.

7. Are 316L coils suitable for seawater service?
316L offers good resistance to seawater but is susceptible to crevice corrosion in stagnant conditions. For continuous seawater immersion, consider duplex 2205 or super duplex 2507 coils.

Complete Size Range: Thickness from 0.3mm to 12mm, width from 600mm to 2000mm – all standard sizes in stock.

Strict Quality Control: ISO 9001, PED, and marine classification society certified.

Full Traceability: Heat number on each coil – traceable to raw material.

Flexible Customization: Slitting, custom lengths, and special surface finishes available.

Marine & Offshore Expertise: ABS, BV, DNV, LR certifications available.

Large Inventory: Over 10,000 tons in stock – ready for immediate dispatch.

Global Delivery: Exported to over 50 countries with reliable logistics support.

Competitive Pricing: Direct mill sourcing eliminates middlemen costs.

Tel / WhatsApp:

Victor: +86 15575100681

Jack: +86 18390957568

E-mail: info@womicstainless.com

Website: www.womicsteel.com

Contact Womic Steel today for a competitive quote on 316/316L stainless steel coils. We offer certified quality, rapid delivery, slitting services, and reliable global shipping for your industrial manufacturing and fabrication projects.

Stock Examples (Cold-Rolled 316L Coils – 2B Finish – Width 1219mm):

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