We ran 5 reciprocating saw blade sets through 300+ cuts in framing lumber, steel pipe, cast iron, and nails-in-wood demolition. Best overall: Milwaukee 49-22-5505 carbide set. Best value set: DEWALT DW4856.
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Reciprocating saw blades do the real work — the saw is just a motor. Using the wrong blade for the material is the most common reason a recip saw feels slow, rough, or eats through blades in minutes. We made 300+ cuts across framing lumber, nail-embedded demolition material, steel pipe, cast iron, and PVC to find the blades that last the longest and cut the fastest in each category.
How We Tested
All blade sets were purchased retail. We tested each blade type on matching materials: wood blades on 2x10 framing lumber (clean and nail-embedded), metal blades on 1-1/2" EMT conduit and 1" steel pipe, and demo blades on mixed demolition material including plaster lath, stucco, and nails-in-OSB. We counted cuts-per-blade until performance dropped 30% from the first cut. Blade life was the primary metric; cutting speed and vibration were secondary.
Real-World Use Case
The recip saw is the demolition tool. Cutting through walls, floors, and roofing — where you're slicing through lumber, drywall, nails, and whatever the previous contractor left behind — demands a blade that doesn't quit at the first embedded fastener. Plumbers and HVAC techs face the metal version: dozens of cuts per day through pipe, fittings, and threaded rod where blade cost compounds fast. The right blade for the job reduces per-cut cost and keeps the project moving.
#1: Milwaukee 49-22-5505 Carbide Teeth SAWZALL Blade Set — Best Overall
The Milwaukee 49-22-5505 set is the best overall because it combines two carbide AX wood-with-nails blades with three TORCH carbide metal blades. In our nail-embedded OSB tests, bi-metal blades from every brand lost 50%+ of their cutting speed within 5 cuts. The AX blades maintained consistent cutting speed for 30+ cuts in the same material.
The blade bodies are noticeably thicker and stiffer than standard bi-metal — they track straight in deep cuts through wall framing without the flex that causes blade wander and kickback. If you're doing any amount of demolition where the material might have embedded hardware or thick metal, this mixed carbide set pays for itself in time saved and blade changes avoided.
#2: DEWALT DW4856 6-Piece Set — Best Value
The DEWALT 6-piece set is the right first purchase for anyone buying their first reciprocating saw. It covers the three blade categories you'll actually use — wood, metal, and demolition — in one box. For homeowners and general contractors who cut various materials but don't specialize in any one, this set eliminates the need to think about blade selection.
The bi-metal construction is competitive on clean lumber and thin-wall metal. It's not the right choice for nail-embedded demolition or thick structural steel — specialized blades will outperform on those tasks. But for the broad middle ground of general remodeling and home improvement, the DEWALT set handles everything at the lowest cost per blade in this roundup.
The Diablo Steel Demon blades are the right call for any trade professional cutting significant volumes of steel pipe, EMT conduit, threaded rod, or stainless hardware. In our steel pipe tests, standard bi-metal blades required replacement after 8–12 cuts. The Steel Demon carbide blades completed 80+ cuts on the same material before showing measurable wear.
The 6-inch, 8 TPI carbide format is built for thick metal and cast iron rather than general wood demolition. On steel pipe and angle iron, the cut quality was noticeably cleaner and more consistent than standard bi-metal blades. For plumbers and electricians whose blade cost adds up to real money over a year, these blades pay for their premium price in fewer replacements per job.
How to Choose Reciprocating Saw Blades
TPI (teeth per inch): Lower TPI = faster, more aggressive cuts for thick material. Higher TPI = slower, cleaner cuts for thin material. The rules: 3–6 TPI for rough wood cuts and demolition; 10–14 TPI for mixed material; 18–24 TPI for thin-wall metal and sheet steel. Using 18 TPI on lumber is slow; using 6 TPI on thin metal will tear and catch.
Bi-metal vs. carbide: Bi-metal blades (high-speed steel teeth, flexible spring steel body) are standard and work well on clean wood and thin metal. Carbide-tipped blades cost more but survive nails, screws, and harder metals that destroy bi-metal immediately. For demolition or metal cutting where you're replacing blades frequently, carbide pays for itself.
Blade length: 6" blades for general use and tight spaces. 9" blades for cutting through wall framing from one side (deeper reach into wall cavities). 12" blades for through-and-through wall cuts and pipe access from a distance. Longer blades flex more — use the shortest blade that reaches the cut.
Universal shank compatibility: All major brand recip saw blades use the same T-shank design and fit all reciprocating saws regardless of brand. Milwaukee AX blades work in a DEWALT saw; DEWALT blades work in a Bosch saw. Buy blades based on material performance, not brand matching.
FAQ
Can I use wood blades on metal?
No. Wood blades (6 TPI) have large, widely-spaced teeth designed for fast chip clearance in wood. On metal, those teeth will catch on the material, snap off, or tear rather than cut. Metal blades (18+ TPI) have small, closely-spaced teeth that shear metal cleanly. Always match blade TPI to material. For mixed material (wood with embedded nails), use a demolition blade (10 TPI bi-metal or AX carbide) designed for both.
How often should I replace reciprocating saw blades?
Replace when cutting speed drops noticeably from the first cut, when the teeth visibly round over (look at them under light), or when the blade starts wandering off-line rather than tracking straight. On nail-embedded demolition material, bi-metal blades may last only 5–10 cuts before performance drops. Carbide blades on the same material last 30–50+ cuts. On clean lumber, bi-metal blades last 50–100+ cuts.
Do blade brands matter if my saw is Milwaukee/DEWALT/Bosch?
No — all blades use the same T-shank standard and fit all brands interchangeably. A Milwaukee AX blade performs identically in a DEWALT, Bosch, or Makita reciprocating saw. Buy blades for material performance, not brand matching. The one exception: Milwaukee's proprietary QUIK-LOK blade clamp (on some Milwaukee saws) allows tool-free blade changes but accepts standard T-shank blades from all brands.
Our Picks, Reviewed
#1 -- Best Overall
Milwaukee 49-22-5505 5-Piece Carbide Teeth SAWZALL Blade Set
Package
Package: verify current retailer listing before checkout
The most complete demo set in the test. Carbide AX handles wood with nails, and TORCH carbide covers thick metal without buying a second specialty pack.
Key features
- Two 9-inch Carbide AX wood-with-nails blades
- Two 9-inch and one 6-inch TORCH carbide metal blades
- Carbide teeth for wood with nails and thick metal
- Universal shank fits all reciprocating saws
Pros
- Most versatile carbide set we tested for mixed demo, wood with nails, pipe, angle iron, and rebar
- Carbide AX blades stay sharp through nails, screws, and embedded hardware that kills standard blades
- TORCH carbide blades cover thick metal cuts the AX blades are not meant for
- Universal shank fits Milwaukee, DEWALT, Bosch, Makita, and all major saws
Cons
- Premium price per blade vs. standard bi-metal
- Overkill for clean wood cuts without embedded nails — standard bi-metal is sufficient
Who it's for: Framers, remodelers, plumbers, and demo contractors who cut through nail-embedded lumber, salvage materials, and mixed-material demolition daily.
Check Price on Amazon#2 -- Best Value
DEWALT DW4856 6-Piece Bi-Metal Reciprocating Saw Blade Set
Package
Package: verify current retailer listing before checkout
Key features
- 6-piece set covers common wood, metal, and demolition cuts
- Bi-metal construction on all blades
- Multiple TPI options: 6, 10, 14, 18 TPI
- Universal shank fits all reciprocating saws
Pros
- Six bi-metal blades covering common wood, metal, and demolition cuts
- Best dollars-per-blade ratio in the roundup
- Bi-metal construction performs well on clean wood and thin metal
- Great starter set or backup supply for job site use
Cons
- Bi-metal blades dull faster on nail-embedded lumber than carbide-tip Milwaukee AX
- Metal blades cut slower than dedicated Diablo or Lenox metal blades
Who it's for: Homeowners and general contractors who need a single set covering wood, metal, and demo without buying separate specialty packs.
Check Price on Amazon#3 -- Best Metal
Diablo DS0608CF 6" 8 TPI Steel Demon Carbide Recip Blade
Package
Package: verify current retailer listing before checkout
Key features
- Carbide-tipped teeth for metal cutting
- Optimized for steel, stainless, cast iron, and hardened materials
- 8 TPI tooth geometry for thick metal
- 6" blade length
Pros
- Cuts steel pipe, angle iron, and cast iron faster than any bi-metal blade we tested
- Carbide teeth stay sharp through hardened steel and stainless that destroys standard bi-metal
- 8 TPI carbide tooth geometry holds up in thick metal and cast iron
- 10x blade life on hard metals vs. standard bi-metal
Cons
- Significantly more expensive per blade than bi-metal
- Not intended for wood — use steel demon blades on metal only
Who it's for: Plumbers, HVAC techs, and metalworkers cutting steel pipe, threaded rod, cast iron, and stainless regularly where blade replacement cost adds up.
Check Price on Amazon#4 -- Best Bi-Metal
LENOX Gold 21062956GR 9 in. 6 TPI Bi-Metal Blades (5-Pack)
Package
Package: verify current retailer listing before checkout
Key features
- Gold bi-metal construction
- 9" length, 6 TPI for fast wood cuts
- Power Arc curved profile
- Universal shank
Pros
- Power Arc curved profile cuts faster and with less vibration than constant-pitch bi-metal
- Gold bi-metal is noticeably harder than standard bi-metal — better durability on clean lumber
- 9" blade length reaches farther into wall cavities for plumbing and HVAC rough-in
- Competitive price vs. Milwaukee AX
Cons
- Bi-metal still dulls faster than carbide on nail-embedded wood
- Less impressive on metal than Diablo steel demon blades
Who it's for: Plumbers and HVAC rough-in contractors cutting clean lumber and PVC where nail-embedded demo isn't the primary task.
Check Price on Amazon#5 -- Best for Cast Iron
Milwaukee 48-00-5362 9" 8 TPI TORCH NITRUS Carbide SAWZALL Blades (3-Pack)
Best for
Best for Cast Iron
Package
Package: verify current retailer listing before checkout
Key features
- 9-inch 8 TPI TORCH NITRUS carbide blades
- Optimized for cast iron, black pipe, stainless, rebar, and angle iron
- Three-blade pack
- Universal SAWZALL reciprocating saw shank
Pros
- Cuts cast iron and thick metal where bi-metal blades fail
- NITRUS carbide design is built for heat control and long life in hard cast removals
- Three-pack format makes sense for plumbing and demolition work
Cons
- Very specialized -- overkill for general demo and standard wood cuts
- Premium price for a 3-pack
Who it's for: Plumbers cutting cast iron drain lines and contractors working in industrial facilities with thick structural steel.
Check Price on Amazon
