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316L Stainless Steel Coil is the low-carbon version of 316 stainless steel, offering enhanced corrosion resistance and excellent weldability for demanding environments. Its reduced carbon content helps minimize carbide precipitation during welding, making it ideal for fabricated structures exposed to chemicals, moisture, and saltwater.
Widely used in chemical processing, marine equipment, pharmaceutical systems, and sanitary applications requiring reliable long-term performance.
316L stainless steel coil (also known as UNS S31603 stainless coil, EN 1.4404 ultra-low carbon steel strip, or marine grade 316L coil) is an extra-low carbon molybdenum-bearing austenitic stainless steel engineered to deliver superior resistance to pitting corrosion, stress cracking, and intergranular corrosion after heavy welding. With a maximum carbon content of only 0.03%, 316L stainless steel coils eliminate harmful carbide precipitation during heat treatment and welding processes.
At XQJ Metal, we manufacture and export premium cold rolled and hot rolled 316L stainless steel coils across standard and custom widths. Produced in strict compliance with ASTM A240, ASTM A480, and EN 10088-2 standards, our low-carbon marine stainless coils feature superior coil flatness, precise thickness tolerances, and protective PE laser masking film.
| Parameter | Standard Value / Specification |
| Material Grade | AISI 316L / UNS S31603 / EN 1.4404 / SUS 316L |
| Chemical Composition | Cr: 16.0–18.0%, Ni: 10.0–14.0%, Mo: 2.0–3.0%, C: ≤ 0.03% |
| Thickness Range | 0.3mm – 12.0mm (Cold Rolled Thin Coil & Hot Rolled Plate Coil) |
| Standard Widths | 1000mm, 1219mm (4ft), 1500mm (5ft), Precision Slit Widths |
| Surface Finishes | 2B, BA, No.4 Hairline, 8K Mirror, NO.1 Industrial Pickled |
| Inner Diameter (ID) | 508mm / 610mm Standard Mill Coils |
| International Standards | ASTM A240, ASTM A480, EN 10088-2, JIS G4305, ISO 9001 |
Q1: What is the primary advantage of 316L stainless steel coil over standard 316 coil?
A: The ‘L’ stands for Low Carbon (C ≤ 0.03%). This ultra-low carbon level prevents chromium carbide precipitation during welding, providing maximum resistance to intergranular corrosion in heavy welded structures without requiring post-weld annealing.
Q2: Can 316L stainless steel coils be precision slit into narrow strips or laser cut?
A: Yes, we utilize high-speed CNC precision slitting lines to process 316L coils into narrow strips down to 10mm width with tight deburred edges. We also supply laser-compatible protective film for burr-free laser cutting.
Q3: What is your Minimum Order Quantity (MOQ) for 316L stainless steel coils?
A: Our standard MOQ for full mill coils is 1 metric ton. Custom slit coils or cut-to-length sheet batches can be supplied in smaller quantities upon request.
If you require specific coil inner diameters, custom slitting tolerances, or technical datasheets, explore our full range of Stainless Steel Coil Products or Contact Our Sales Engineering Team directly for a fast factory quotation.
Our materials support a wide range of construction and infrastructure projects
316L stainless steel coil has a lower carbon content than 316, helping reduce the risk of intergranular corrosion after welding while maintaining excellent corrosion resistance. It is commonly selected for fabricated equipment and welded structures.
316L stainless steel coil is commonly selected for applications involving extensive welding or where maintaining corrosion resistance after fabrication is important. The appropriate grade should be chosen according to the service environment and project requirements.
Yes. 316L stainless steel coil is widely used for pharmaceutical, chemical processing, and hygienic equipment because of its excellent corrosion resistance and good fabrication characteristics. Material selection should comply with the applicable industry standards and service requirements.
It offers excellent resistance to seawater corrosion and maintains strength in humid and salt-rich conditions.
No. Strength is achieved through strain hardening rather than heat treatment.
Yes. It provides excellent weldability for structural fabrication.
Yes, it is commonly applied in tanks and pressure equipment.
Yes. It provides higher strength compared with most non-heat-treated aluminum alloys.
Yes. Thickness, width and temper can be adjusted based on project demand.
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