What are the dimension of the spool? My spool gun takes a 4" spool.

The spools are 4". Generally any 1 LB spool comes on a 4" spool and fits most standard spool guns.

I welding an Aluminum pier and don't know the grade. What mig wire grade would you recommend?

You can use this one. It is precisely the one that welders use when they don´t know the aluminum grade they are welding.

Can I use this without gas ?I have a $100.00 mig welder from Harbor freight tools and would like to use this wire with it.

Hello. No, unfortunately, you need Argon to weld with this wire.

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SÜA - ER4043 - MIG Aluminum Welding Wire - 1 Lb x 0.035'' (4 SPOOLS)

SÜA - ER4043 - MIG Aluminum Welding Wire - 1 Lb x 0.035'' (4 SPOOLS)

Product ID: 27076894

Details

Brand
SÜA
Color
gray
Finish Type
Unfinished
Item Weight
4 pounds
Material
Aluminum

💡Melting range 1065°F–1170°F for smooth welds

🔥5% Silicon boosts weld fluidity

⚙️0.035'' diameter for precision control

$239.04

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Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Elevate your welds with SÜA ER4043 — where precision meets flawless shine!

OPTIMIZED MELTING RANGE - Melts smoothly between 1065°F and 1170°F, ensuring consistent weld puddle fluidity and superior bonding.
PRECISION DIAMETER CONTROL - 0.035'' wire thickness offers the perfect balance of strength and flexibility for professional-grade MIG welding.
CONVENIENT MULTI PACK SUPPLY - Four 1-lb spools keep your workflow uninterrupted—stock up and never miss a beat on your next big job.
SILICON ENHANCED PERFORMANCE - 5% silicon content reduces cracking and creates bright, shiny welds that stand out on every project.
VERSATILE ALLOY COMPATIBILITY - Ideal for welding popular aluminum grades like 6061, 6063, and cast alloys, making it your go-to for diverse applications.

SÜA ER4043 MIG Aluminum Welding Wire features a 5% silicon alloy that lowers melting point and enhances weld fluidity, making it less prone to cracking. With a 0.035'' diameter and a melting range of 1065°F–1170°F, it delivers bright, durable welds across a wide range of aluminum grades. Available in convenient 1-lb spools sold in packs of four, this wire is a trusted choice for professionals seeking reliable, high-quality aluminum welding performance.

Specifications

ASIN	B01DTLYQ7E
Best Sellers Rank	#27,144 in Automotive ( See Top 100 in Automotive ) #27 in Welding Wire
Brand Name	SÜA
Color	gray
Customer Reviews	4.6 4.6 out of 5 stars (356)
Finish Type	Unfinished
Global Trade Identification Number	00840338508683
Item Diameter	0.04 inches
Item Form	Solid
Item Shape	Cylinder
Item Thickness	0.04 inches
Item Weight	4 pounds
Manufacturer	TGB
Material	Aluminum
Model Number	4043W4x35
Number of Items	4
Number of Packs	4
Part Number	4043W4x35
UPC	840338508683 685867900801
Wire Diameter	0.04 inches

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$239.04

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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