E316L-16 Marine & Chemical Stainless Welding Rod
E316L-16 Amperage by Diameter
| Diameter | Amperage Range |
|---|---|
| 3/32" (2.4 mm) | 40 - 80A |
| 1/8" (3.2 mm) | 70 - 120A |
| 5/32" (4 mm) | 100 - 160A |
E316L-16 is a low-carbon molybdenum-bearing austenitic stainless steel stick electrode classified under AWS A5.4. It deposits 316L stainless weld metal containing approximately 2% molybdenum, which provides significantly better resistance to pitting and crevice corrosion compared to 308L in chloride-containing environments. The -16 coating designation means it runs on AC or DCEP with a smooth, stable arc and easy slag removal. The low carbon content (0.04% max) prevents carbide precipitation during welding, maintaining corrosion resistance in the heat-affected zone. This electrode is specified whenever the base metal is 316 or 316L stainless steel, particularly in marine fabrication, chemical processing, pharmaceutical equipment, food service equipment, and pulp and paper mill applications.
What This Means in Practice
E316L-16 adds molybdenum to the standard 308L stainless chemistry. The moly improves resistance to pitting corrosion from chlorides, making this the correct choice for anything near saltwater, chemical tanks, or food processing equipment where 316/316L stainless base metal is used.
E316L-16 Suitability Scores
How well this electrode matches common applications. Not a quality rating. all AWS-certified electrodes meet their specification.
When to Use E316L-16
Use E316L-16 when welding 316 or 316L stainless steel base metal.
Required for marine applications, chemical tanks, pharmaceutical equipment, food processing, and any environment where chloride-induced pitting is a risk.
Also suitable for welding 316 to itself or to other austenitic stainless grades where molybdenum content is needed in the weld.
E316L-16 Limitations
Not suitable for carbon steel.
More expensive than E308L-16.
Overkill for 304/304L applications where chloride exposure is not a concern.
Requires interpass temperature control (350F max) to prevent sensitization.
Should not be used on ferritic or martensitic stainless steels.
E316L-16 Storage Requirements
Store in dry conditions. Reseal opened containers. These rods are less moisture-sensitive than low-hydrogen carbon steel electrodes but should not be left exposed to high humidity for extended periods.
E316L-16 Technical Specifications
| Property | Value |
|---|---|
| AWS Classification | E316L-16 |
| Process | stainless-electrodes () |
| Polarity | AC, DCEP |
| Positions | flat, horizontal, vertical up, overhead |
| Penetration | medium |
| Coating Type | rutile (titania) |
| Tensile Strength | 75,000 psi |
| Yield Strength | 58,000 psi |
| Elongation | 35% |
| Base Metals | 316 stainless steel, 316L stainless steel, 316Ti stainless steel |
| AWS Specification | A5.4 |
Frequently Asked Questions
What is the difference between E316L-16 and E308L-16?
E316L-16 contains approximately 2% molybdenum, which E308L-16 does not have. This molybdenum addition provides significantly better resistance to pitting and crevice corrosion in chloride-containing environments such as saltwater, chemical plants, and food processing. Use E316L-16 when the base metal is 316/316L stainless or when chloride exposure is expected. Use E308L-16 for 304/304L stainless in non-chloride environments.
Can I use E316L-16 on 304 stainless steel?
Yes, E316L-16 is metallurgically compatible with 304 stainless steel. However, it is more expensive than E308L-16 and the molybdenum content provides no benefit unless the weld will be exposed to chlorides. For 304-to-304 joints without chloride exposure, E308L-16 is the more cost-effective and correct choice.
What shielding gas do I use with E316L-16?
E316L-16 is a stick electrode and does not require external shielding gas. The -16 flux coating provides its own shielding atmosphere during welding. It runs on AC or DCEP. If you need 316L chemistry in wire form for MIG or TIG, use ER316L wire instead.
External Resources
Manufacturer data sheets and standards for E316L-16.
Data sourced from AWS A5.4/A5.4M. Amperage ranges are approximate starting points. adjust based on position, fit-up, and material thickness. Always follow manufacturer recommendations and applicable codes.