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The cheapest ER70S-6 on this shelf

BIG RED AER70S602R, ER70S-6, 0.035 in, 11 lb

The same AWS classification as six other wires on this shelf, in the same diameter and the same spool weight, at less than half the price of the most expensive.

BIG RED ER70S-6 solid MIG welding wire on an eleven-pound spool

BIG RED AER70S602R, ER70S-6, 0.035 in, 11 lb

The same AWS classification as six other wires on this shelf, in the same diameter and the same spool weight, at less than half the price of the most expensive.

Amazon reference
B0DNLM27PC
EAN
0810151423296
  • ER70S-6 to the same AWS classification as every other solid wire on this shelf
  • Eleven pounds, the largest spool weight here
  • Publishes nothing beyond the classification — no tensile figure, no copper coating statement, no deoxidiser levels

Best for: General steel fabrication from 2 mm (0.08 in) upwards, bought on price with the classification understood

≈ $18
Check price on Amazon

Specifications

Amazon reference
B0DNLM27PC
EAN
0810151423296

This is the least expensive solid wire in this hub, and it is the same thing as the most expensive: ER70S-6, the standard copper-coated mild steel MIG wire, on an eleven-pound spool in 0.035 in.

What makes that worth saying plainly is how little separates the seven ER70S-6 wires on this shelf on paper. The AWS classification fixes the chemistry and the mechanical properties of the deposit; the diameters are .023, .030 and .035 in; the spools are ten or eleven pounds. The published specifications are therefore nearly identical, and the prices run from under nineteen dollars to over forty.

What this listing adds beyond the class is nothing — no tensile figure, no statement about the copper coating, no deoxidiser levels, and no named shielding gas, where three competitors here specify 100 per cent CO2 or an 80/20 argon mix. Its five bullets describe a stable arc, a smooth feed and a sturdy spool in five different ways. At 0.035 in it is the general-to-heavy end of the range: fine from about 2 mm (0.08 in) of steel upwards, and the wrong choice for car-body panel, which is what this shelf’s buying tip is about.

Availability

Read on the day this page was built: $19 at the American Amazon shop.

Read from Keepa on the day this page was last revised; stock and price both move without notice.

Prices quoted in this text were read on 2026-10-07. The live price is at the top of the page.

The questions welders ask

If it is the same classification, why is it cheaper?

That is the real question on this shelf, and no listing answers it. AWS A5.18 defines what ER70S-6 is: its composition, including the manganese and silicon that do the deoxidizing, and the mechanical properties of the deposit. Seven wires here carry that classification at prices from under nineteen dollars to over forty. What varies between them is not the specification — it is copper coating quality, winding consistency, tolerance on the diameter and how well the spool is packed, and almost none of that is published anywhere.

What gas does it need?

The listing says only "gas welding". For ER70S-6 that means either 100 per cent CO2 or an argon-CO2 mix, usually 80/20 — the first is cheaper and spatters more, the second gives a cleaner bead and costs more. Three wires on this shelf name both options explicitly; this one does not name either.

More mig wire

  • Blue Demon ER70S-6 MIG welding wire on an eleven-pound spool

    Blue Demon ER70S6-030-11, ER70S-6, 0.030 in, 11 lb

    The only wire on this shelf that claims X-ray quality welds and the highest as-welded tensile strength of any plain carbon steel wire — with no figure attached to either.

    Amazon reference
    B00F429W7G
    EAN
    0652426111251
    • Claims porosity-free, X-ray quality welds, which is a specific and testable standard of soundness
    • States that the shielding gas is required — CO2 or a CO2 mix — rather than leaving it implied
    • Claims "the highest tensile strength (as welded) of all the plain carbon steel wires" without a figure or a comparison

    Best for: Work that will be inspected, or castings and forging salvage where the deposit has to be sound

    ≈ $40
    Check price on Amazon
  • PGN ER70S-6 solid MIG welding wire, 0.023 inch, on a ten-pound spool

    PGN Bearings WW-ER70S6-023-10LB, ER70S-6, 0.023 in, 10 lb

    The finest wire in this hub by a clear margin — the 0.6 mm (0.02 in) class this shelf's buying tip says car-body sheet needs, and the only one of its size here.

    Amazon reference
    B089LVH45M
    EAN
    0760655019337
    • A 0.023 in diameter — the 0.6 mm (0.02 in) class — which is what this hub’s buying tip says the thin end of the range needs
    • The only wire of this size anywhere in this hub, in either half
    • The highest price per spool on this shelf, for the least metal per meter

    Best for: Car-body panel and thin sheet, where a 0.8 mm (0.03 in) wire blows holes

    ≈ $41
    Check price on Amazon
  • PGN ER70S-6 solid MIG welding wire, 0.030 inch, on a ten-pound spool

    PGN Bearings WW-ER70S6-030-10LB, ER70S-6, 0.030 in, 10 lb

    The general-purpose diameter from the same maker and at the same price as its 0.035 in wire — which makes the choice purely about the metal you weld.

    Amazon reference
    B082P65XL3
    EAN
    0760655018903
    • 0.030 in is the general-purpose diameter, per this shelf's buying tip
    • The same price as the maker’s 0.035 in wire on this shelf, so diameter is a free choice rather than a cost
    • No tensile figure, no named shielding gas and no copper coating statement

    Best for: The one spool to own if you weld mostly 2 to 5 mm (0.08 to 0.20 in) steel

    ≈ $33
    Check price on Amazon

Elsewhere in the workroom

  • PFERD 4-piece cutting and flap disc set, product photograph

    PFERD 4-piece cutting and flap disc set

    Three cutting discs and a flap disc from a professional abrasives maker — the two jobs, in the right proportion.

    Cutting discs
    3 × 125 × 1.0 mm (0.12 × 4.92 × 0.04 in), straight
    Flap disc
    1 × polishing/finishing disc
    Diameter
    125 mm (4.92 in)
    Amazon reference
    B0B33M94D5
    EAN
    4007220422618
    • A professional abrasives manufacturer rather than a hardware brand
    • Three-to-one is roughly the real consumption ratio of cutting to finishing
    • Four discs is a small quantity for €17

    Best for: Trying a better grade of abrasive before committing to a box

    Search Amazon for this model
  • Sägeband-Manufaktur M42 1638 × 13 × 0.9, 10/14 TPI, 3-pack, product photograph

    Sägeband-Manufaktur M42 1638 × 13 × 0.9, 10/14 TPI, 3-pack

    A 10/14 pitch: the one to fit when the work is tube and thin wall rather than solid bar.

    Type
    Premium M42 HSS bi-metal
    Dimensions
    1638 × 13 × 0.9 mm (64.5 × 0.51 × 0.04 in)
    Pitch
    10/14 TPI, variable
    Quantity
    3 blades
    Amazon reference
    B07N89PKT8
    EAN
    4251413656469
    • 10/14 keeps three teeth in a thin wall, where a 6–10 blade strips
    • German blade maker specializing in bands rather than a general accessories brand
    • Fine pitch cuts more slowly in solid bar

    Best for: Cutting tube, box section and thin-walled stock accurately

    Search Amazon for this model
  • Sägeband-Manufaktur M42 1440 × 13 × 0.65, 14/18 TPI, 5-pack, product photograph

    Sägeband-Manufaktur M42 1440 × 13 × 0.65, 14/18 TPI, 5-pack

    Fourteen to eighteen teeth per inch — for thin-wall tube and sheet, where anything coarser tears.

    Type
    Premium M42 HSS bi-metal
    Dimensions
    1440 × 13 × 0.65 mm (56.7 × 0.51 × 0.03 in)
    Pitch
    14/18 TPI, variable
    Quantity
    5 blades
    Amazon reference
    B07VMRV9GQ
    EAN
    4251413656964
    • 14/18 is the pitch for thin-wall tube and sheet stacks
    • A thinner 0.65 mm (0.03 in) backing flexes more easily around small wheels
    • Very slow in solid material — the gullets fill and the blade rubs

    Best for: Thin-wall tube, conduit and light section on a small saw

    Search Amazon for this model

All mig wire