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Carbide teeth and a coarse pitch — for solid section

EZARC R678HM, carbide 6 in 8 TPI, 3-pack

The coarse-pitch carbide blade this shelf needs: 8 TPI for solid section, with each tooth ground and welded rather than cut from the body.

EZARC carbide tipped reciprocating saw blade with welded teeth

EZARC R678HM, carbide 6 in 8 TPI, 3-pack

The coarse-pitch carbide blade this shelf needs: 8 TPI for solid section, with each tooth ground and welded rather than cut from the body.

Amazon reference
B08FQQ52T8
EAN
0611553064410
  • An 8 TPI pitch, the only coarse blade on this shelf, which is what solid section needs
  • Carbide teeth, individually precision ground and welded, rather than hardened steel teeth
  • Claims "up to 50x longer life than bi-metal" with no test or condition behind it

Best for: Rebar, car beams and hardened steel, where a bi-metal blade dulls in one cut

≈ $25
Check price on Amazon

Specifications

Amazon reference
B08FQQ52T8
EAN
0611553064410

This is the blade the rest of the shelf is missing. Four of the American recip blades here are 14 TPI, which is a thin-to-medium pitch; this one is 8 TPI with carbide teeth, which is what solid bar, rebar and hardened steel actually want. At 8 teeth to the inch the spacing is about 3.2 mm (0.13 in) and the gullets are big enough to carry chips out of a deep cut instead of packing them.

The teeth are the other half. A bi-metal blade has hardened steel teeth that dull gradually; carbide teeth are separate tips, precision ground and individually welded, and they stay sharp through stainless, high-alloy steel and rebar long after a bi-metal blade has rounded over. EZARC puts it at up to fifty times the life, which is a number with nothing behind it — the direction is right, the multiple is a claim.

What carbide does instead of dulling is chip. A bind, a shock load or a trapped offcut takes a tooth off and it does not come back, which is why a carbide blade is a tool for the material it was bought for and not a general-purpose blade. And at 8 TPI it is the wrong blade for thin-wall tube: this hub’s rule cuts both ways, and a single coarse tooth catching the far wall of a thin section will strip.

Availability

Read on the day this page was built: $24 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

When is 8 TPI the right pitch?

On anything solid. This hub’s buying tip is to keep at least three teeth in the cut and to use a coarse pitch on solid bar: at 8 TPI the teeth are about 3.2 mm (0.13 in) apart, so three of them span nearly 10 mm (0.39 in), and the gullets between them are big enough to carry the chips out of a deep cut. On thin-wall tube the same blade is dangerous — a single tooth catching the far wall will strip. The 14 TPI blades on this shelf are the tube blades; this is the bar blade.

Carbide or bi-metal?

Carbide for hard material, bi-metal for everything else. A bi-metal blade has hardened high speed steel teeth welded to a spring steel body and dulls progressively; a carbide blade has separate carbide tips welded on, which stay sharp far longer in stainless, hardened steel and rebar — and chip instantly on a shock load or a bind. EZARC claims up to fifty times the life, which is a figure with no test behind it; the direction is right and the multiple is the maker’s.

More metal saw blades

  • Milwaukee 5-3/8 inch carbide metal cutting circular saw blade

    Milwaukee 48-40-4205, 5-3/8 in 30T carbide

    A cold-cut blade for a cordless metal saw, with cobalt in the carbide and vibration slots in the plate — and no arbor size, kerf or speed rating published.

    Amazon reference
    B0B4PBQ93R
    EAN
    0045242569199
    • Cobalt-infused tungsten carbide stated, which is a tougher grade than plain carbide for ferrous work
    • Laser-cut vibration damping slots in the plate, stated to reduce heat and noise
    • No arbor size published, on a circular blade — the one dimension that decides whether it fits

    Best for: A cordless metal-cutting circular saw on steel and stainless, where a cool, burr-free cut is the point

    ≈ $35
    Check price on Amazon
  • TOLESA 6 inch bi-metal reciprocating saw blades, five in a pack

    TOLESA T16141M, 6 in 14 TPI, 5-pack

    A five-pack of bi-metal blades that applies this hub’s three-teeth rule for you — it publishes the sheet thickness and the pipe diameter the pitch suits.

    Amazon reference
    B089NWRKYJ
    EAN
    0630808000010
    • Publishes the material range the pitch is for — 2 to 8 mm (0.08 to 0.31 in) sheet, solid pipe and profile under 4 in
    • Publishes the body thickness, 0.9 mm (0.04 in), which decides whether the blade wanders or snaps
    • A 14 TPI pitch is for thin and medium work; solid bar wants a coarser blade and this hub says so

    Best for: Cutting 2 to 8 mm (0.08 to 0.31 in) sheet and small pipe with a reciprocating saw

    ≈ $13
    Check price on Amazon
  • TOLESA 9 inch bi-metal reciprocating saw blades, five in a pack

    TOLESA T19142M, 9 in 14 TPI, 5-pack

    The long version of the same blade, and the only figure that changes is the one that matters — the pipe diameter it will cut through in one pass.

    Amazon reference
    B089NV972C
    EAN
    0630808000027
    • Publishes the pipe diameter it will cut — under 7 in, against under 4 in for the maker’s 6 in blade
    • Same published material range for sheet, 2 to 8 mm (0.08 to 0.31 in), and the same 0.9 mm (0.04 in) body and 8 per cent cobalt
    • A longer blade flexes more and wanders more easily on a straight cut

    Best for: Cutting pipe up to 7 in across, where a 6 in blade cannot reach through

    ≈ $15
    Check price on Amazon

Elsewhere in the workroom

  • VEVOR ER70S-6 solid MIG welding wire on a ten-pound spool

    VEVOR ER70S-6, 0.030 in, 10 lb

    The only listing on this shelf that puts a number on the weld rather than on the spool — a stated tensile strength of 490 MPa or better.

    Amazon reference
    B0GCDRL8V4
    EAN
    0197988178002
    • Publishes a tensile strength — at least 490 MPa — which no other wire in this hub states
    • Names both shielding gas options: 100 per cent CO2, or 80 per cent argon with 20 per cent CO2
    • A ten-pound spool where two wires on this shelf give eleven for less

    Best for: General fabrication where the deposit strength matters and the gas is already decided

    ≈ $25
    Check price on Amazon
  • YESWELDER ER70S-6 copper-coated solid MIG wire on a ten-pound spool

    YESWELDER ZY-GHM-DYYL-2-319, ER70S-6, 0.030 in, 10 lb

    The only wire on this shelf whose listing states that it is copper coated — which is the property that decides whether it still feeds smoothly at the end of the spool.

    Amazon reference
    B07W3KR4XR
    EAN
    0658848701629
    • States that the wire is copper coated, which no other listing on this shelf does
    • Names both shielding gas options and explains the consequence: higher currents are possible with 100 per cent CO2
    • No tensile figure, where one wire on this shelf publishes 490 MPa

    Best for: A machine that runs 100 per cent CO2 at higher currents on sheet without burning through

    ≈ $36
    Check price on Amazon
  • YESWELDER gasless flux-core MIG wire on a two-pound spool

    YESWELDER E71T-GS gasless, 0.030 in, 2 lb

    The only flux-cored wire in this hub, and its listing says nothing about the polarity change this hub’s own introduction warns about.

    Amazon reference
    B07W41G6P3
    EAN
    0658848701643
    • Needs no shielding gas, which is what makes outdoor and windy work possible at all
    • Stated to weld over light rust and mill scale, where solid wire under gas will not
    • Says nothing about polarity, and self-shielded flux-cored wire normally runs electrode negative — the reverse of solid wire

    Best for: Outdoor and windy work, or a machine with no gas bottle at all

    ≈ $17
    Check price on Amazon

All metal saw blades