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316l Coil
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316L stainless steel coil is a low-carbon austenitic stainless steel belonging to the molybdenum-bearing 300 series. Compared with 304 stainless steel, 316L offers enhanced corrosion resistance, especially in chloride and marine environments. The low carbon content reduces the risk of intergranular corrosion after welding, making it ideal for fabrication and heavy forming applications.
Chemical Composition of 316L Stainless Steel Coil
The improved corrosion resistance of 316L is mainly due to the addition of Molybdenum (Mo) and controlled low carbon content.
| Element | Content (%) |
|---|---|
| Chromium (Cr) | 16.0 – 18.0 |
| Nickel (Ni) | 10.0 – 14.0 |
| Molybdenum (Mo) | 2.0 – 3.0 |
| Carbon (C) | ≤ 0.03 |
| Manganese (Mn) | ≤ 2.00 |
| Silicon (Si) | ≤ 1.00 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Iron (Fe) | Balance |
Role of Key Alloying Elements
Chromium (Cr) forms a passive oxide layer for corrosion resistance.
Nickel (Ni) improves ductility and structural stability.
Molybdenum (Mo) enhances resistance to pitting and crevice corrosion.
Low Carbon (≤0.03%) minimizes carbide precipitation during welding.
Mechanical Properties of 316L Coil
Typical mechanical properties in annealed condition:
| Property | Typical Value |
|---|---|
| Tensile Strength | ≥ 485 MPa |
| Yield Strength | ≥ 170 MPa |
| Elongation | ≥ 40% |
| Hardness (HB) | ≤ 217 |
| Density | 7.98 g/cm³ |
| Modulus of Elasticity | 193 GPa |
Performance Characteristics
Excellent resistance to chloride environments.
Superior pitting and crevice corrosion resistance.
Outstanding weldability without post-weld heat treatment.
Good formability for deep drawing and bending.
Stable mechanical performance at both high and low temperatures.
Standard Specifications and Dimensions of 316L Coil
316L stainless steel coils are available in various thicknesses, widths, and finishes depending on industrial requirements.
Thickness Range
| Type | Thickness Range |
|---|---|
| Cold Rolled Coil | 0.3 mm – 3.0 mm |
| Hot Rolled Coil | 3.0 mm – 16.0 mm |
| Heavy Gauge Coil | Up to 20 mm (custom) |
Width Range
1000 mm
1219 mm (4 ft)
1250 mm
1500 mm
Custom widths available
Coil Weight
Typically 3 – 15 tons per coil (depending on thickness and width)
Surface Finishes
2B
BA (Bright Annealed)
No.1
No.4
HL (Hairline)
Typical Applications of 316L Stainless Steel Coil
Due to its superior corrosion resistance, 316L coil is widely used in:
Marine equipment and offshore structures.
Chemical processing tanks and pipelines.
Pharmaceutical and medical equipment.
Food processing machinery.
Architectural panels in coastal environments.
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