Flux-core vs. solid wire, polarity when you switch between them, and picking a diameter your machine will actually feed: MIG Welding Wire Buying Guide.
Stainless steel wire is rated 120,000 psi and ER70S-6 mild steel 70,000 psi on the label. Match the wire diameter to your machine's drive rolls and contact tip.
Aluminum wire is rated 33,000 psi on the label.
Related category: sanding belts.
Questions about MIG Welding Wire
What does this collection include?
Forney MIG welding wire: ER70S-6 and mild steel, stainless steel and aluminum, in .024, .030 and .035 in. diameters, on 1, 2 and 10 lb spools.
Solid wire or flux-cored wire?
Solid ER70S-6 wire needs a shielding gas. Flux-cored E71T-GS wire is self-shielded and runs without gas. Stainless and aluminum MIG wire are also listed. Match the wire diameter, 0.024 to 0.04 in. here, to your welder's drive roll and contact tip.
Which brands do you carry here?
This collection is Forney.
How fast does it ship?
Most items ship in 1–3 business days; special-order and drop-ship items vary by vendor.
Does shipping cost extra?
Freight depends on which supplier ships the item. Your cart shows each shipment's freight and any free-freight threshold before you check out.
Can I get a better price on a larger quantity?
Larger quantities often price lower. In your cart, use "Request a quote for this cart" (or our Request a Quote form) for a volume price.
How can I pay?
By card at checkout. ACH or check is accepted on invoiced orders, and Net 30 terms are available for approved business accounts.
What if something arrives damaged or wrong?
Tell us within 7 days of delivery, with photos and your order number, and we will replace it or refund it at our cost. Items you no longer want can only come back with prior approval, within 14 days, unopened, with a 20% restocking fee, and the buyer pays the return freight. Custom, opened and hazardous items, and chemicals and adhesives once shipped, cannot be returned. Details are in our Refund & Return Policy.
