ER5356 Aluminum MIG Welding Wire – 5000 Series Filler
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Overview
Nexalloy ER5356 Aluminum MIG Welding Wire – 5000 Series Filler
Nexalloy ER5356 Aluminum MIG Welding Wire is engineered for welding 5000 series aluminum alloys, particularly those containing up to 5% magnesium. It delivers higher strength and excellent corrosion resistance, making it a strong choice for maritime applications and transport vehicles. Available in multiple diameters and spool weights to match your MIG setup.
Key Features
- Higher strength and excellent corrosion resistance
- Ideal for welding 5000 series aluminum alloys (up to 5% Mg)
- Suited for maritime applications and transport vehicles
- Available in .030", .035", .045", 3/64", and 1/16" diameters
- Spool weights: 1 lb, 5 lb, 16 lb, and 20 lb
Technical Specifications
| AWS Classification | ER5356 |
| Welding Process | MIG (GMAW) |
| Base Alloys | 5000 series aluminum |
| Magnesium Content | Up to 5% |
| Available Diameters | .030", .035", .045", 3/64", 1/16" |
| Available Spool Weights | 1 lb, 5 lb, 16 lb, 20 lb |
Part Number & Size Reference
Other Products
ER4043 MIG Wire | ER5554 MIG Wire | ER5356 TIG Rods | ER4043 TIG Rods | E4043 Stick Electrodes
Specifications
| Brand | Nexalloy |
|---|---|
| Product type | Aluminum Welding |
| Size | .030 inch (0.8mm) 1lbs., .035 inch (0.9mm) 1lbs., .045 inch (1.2mm) 1lbs., .030 inch (0.8mm) 5lbs., .035 inch (0.9mm) 5lbs., .045 inch (1.2mm) 5lbs., .035 inch (0.9mm) 16lbs., .045 inch (1.2mm) 20lbs., 1/16 inch (1.6mm) 20lbs. |
Sizes & pricing
Every option with its part number and price. Select one to load it into the cart above.
| Option | SKU | Price | Select |
|---|---|---|---|
| .030 inch (0.8mm) 1lbs. | MW535603001 | $16.99 | |
| .035 inch (0.9mm) 1lbs. | MW535603501 | $15.99 | |
| .045 inch (1.2mm) 1lbs. | MW535604501 | $14.99 | |
| .030 inch (0.8mm) 5lbs. | MW535603005 | $89.00 | |
| .035 inch (0.9mm) 5lbs. | MW535603505 | $88.00 | |
| .045 inch (1.2mm) 5lbs. | MW535604505 | $87.00 | |
| .035 inch (0.9mm) 16lbs. | MW535603516 | $209.00 | |
| .045 inch (1.2mm) 20lbs. | MW535636420 | $239.00 | |
| 1/16 inch (1.6mm) 20lbs. | MW535611620 | $249.00 |
Frequently asked questions
What is 5356 aluminum MIG wire used for?
ER5356 MIG wire welds 5000 series aluminum alloys that contain magnesium, up to about 5%. The added strength and corrosion resistance it brings to a joint are why fabricators reach for it on marine hulls, trailers, and other transport equipment rather than a general-purpose filler.
What aluminum alloys does 5356 wire match?
It's the go-to filler for 5xxx series base metals — magnesium-alloyed aluminum such as 5052, 5083, and 5086. Matching a magnesium-based filler to a magnesium-based parent metal keeps the weld's strength and color close to the surrounding material.
What diameters can I get 5356 MIG wire in?
This wire ships in .030", .035", .045", 3/64", and 1/16" — enough range to cover most spool guns and standard MIG feeders without needing a special setup.
Does 5356 wire come in different spool weights?
Yes, from a compact 1 lb spool up through 5 lb, 16 lb, and 20 lb options, so a hobbyist topping up a repair and a shop running a production line can both buy the right amount.
Is this wire suited to marine or boat fabrication?
It's one of the more common choices for exactly that. The magnesium content gives welded joints better resistance to saltwater corrosion than a silicon-based filler would, which matters on hulls, docks, and other equipment that lives near water.
What welding process does 5356 wire run on?
It's a MIG (GMAW) wire, spooled for continuous wire-feed welding rather than hand-fed the way a TIG rod or stick electrode is.
How is 5356 different from 4043 wire?
5356 leans on magnesium for strength and corrosion resistance and suits 5xxx base alloys, while 4043 leans on silicon for a fluid, easy-running puddle and suits 6xxx base alloys. The right pick depends on which family your base aluminum belongs to, not personal preference.
Can 5356 wire be used on trailers or transport equipment?
Yes — its strength and corrosion resistance make it a practical filler for aluminum trailers and other transport structures that see vibration, weather, and road salt over time.
Why do welders pick a magnesium-alloyed filler like 5356 instead of a silicon one?
Magnesium fillers like 5356 generally deliver higher tensile strength and hold up better in corrosive, wet environments, whereas silicon fillers like 4043 flow more smoothly but sacrifice some of that strength and corrosion performance.
Will 5356 wire discolor differently than the base metal after welding?
Because 5356 is itself a 5xxx-family alloy, it anodizes and colors closer to a 5xxx base metal than a silicon filler would, which is one reason it's favored where a closer color match after anodizing matters.
Not sure this is the right part?
Tell us the machine, the material and the job. A welding specialist - not a call centre - will confirm fit and pricing, including volume and trade quotes.
