Premium bi-metal hacksaw blades in 12 inch, available in 24 or 32 TPI. Cuts metal, plastic, conduit, pipe and more. Built to last longer than standard HSS blades and available in bulk quantities at trade prices.
Size
QTY
Price
QTY
12in - 24pi
100
£55.00£66.00
12in - 24pi
10
£5.90£7.08
12in - 24pi
2
£1.79£2.15
12in - 32pi
100
£55.00£66.00
12in - 32pi
10
£5.90£7.08
12in - 32pi
2
£1.79£2.15
Bi-metal hacksaw blades are the standard choice for anyone cutting metal regularly on site. These premium 12 inch blades combine a high-speed steel cutting edge with a flexible alloy steel body, which means you get the tooth hardness to cut cleanly without the brittleness that causes snapping mid-cut. If you’ve ever broken a cheap blade halfway through a piece of box section, you’ll appreciate the difference immediately.
Available in two tooth counts: 24 TPI for faster cutting through thicker sections, and 32 TPI for cleaner cuts on thin-wall tube, sheet metal, and smaller profiles. Choosing the right TPI matters more than most people give it credit for. Too coarse on thin material and you’re stripping teeth; too fine on thick steel and you’re there all day. The rule most tradespeople work to is having at least three teeth in contact with the material at any point, which guides you toward the right option pretty quickly.
Where Bi-Metal Hacksaw Blades Earn Their Keep
These blades suit a wide range of trades. Plumbers reach for them when cutting copper and steel pipe. Electricians use them on conduit and trunking. Fabricators and steel fixers keep a stock for general metalwork. The 32 TPI option is particularly useful for cutting threaded rod cleanly without distorting the thread profile, which saves a lot of foul language later when the nut won’t go on.
Because these are bi-metal rather than standard carbon steel, they flex under load rather than snapping, and the cutting edge holds its sharpness significantly longer. On site, that translates to fewer blade changes and less time hunting through the van for replacements. Available in packs of 2, 10, or 100, so whether you’re topping up the toolbox or stocking up for a longer job, the quantities make sense. Bulk buyers will find the 100-pack pricing hard to argue with.
Pro Tip: When cutting thin-wall tube or conduit, try angling the hacksaw slightly so you're cutting at a shallow diagonal rather than straight across — this keeps more teeth in contact with the material and dramatically reduces tooth stripping.
These blades are used across a wide range of trades and applications. Plumbers use them for copper, steel and plastic pipe. Electricians cut conduit, trunking and cable tray. General builders and maintenance engineers reach for them when an angle grinder is overkill and a hacksaw is the right tool for the job. The 24 TPI is well suited to solid bar stock, angle iron and thicker sections, while the 32 TPI comes into its own on thin sheet, small-diameter tube and threaded rod.
Best For
Cutting steel, copper and aluminium pipe
Conduit and cable trunking
Threaded rod and bolts
Thin sheet metal
Plastic pipe and profiles
Box section and angle iron
Available In
12in 24 TPI
12in 32 TPI
Packs of 2, 10 or 100
Key Features
Bi-metal construction for flexibility and durability
High-speed steel cutting teeth
Flexible alloy steel body resists snapping
Longer blade life than carbon steel alternatives
Standard 12 inch fit for most hacksaws
Not suitable for: Not suitable for cutting hardened steel, masonry, or glass. These are standard hacksaw blades and require a hacksaw frame — they are not compatible with power tools or reciprocating saws.
Fit the blade with the teeth pointing forward, away from the handle, so the blade cuts on the push stroke. Tension the blade firmly in the frame — a loose blade will wander off line and wear unevenly. For cleaner cuts, mark your cut line clearly and start the cut with a few gentle pull strokes to create a small groove before applying full pressure.
Let the blade do the work at a steady pace. Forcing it generates heat, dulls the teeth faster, and increases the chance of the blade drifting. On thin material, reduce downward pressure and keep the stroke smooth. A little cutting oil or general purpose lubricant on the blade when cutting steel extends blade life noticeably and keeps the cut running straight.
Select the correct TPI for your material: 24 TPI for thicker sections, 32 TPI for thin-wall tube and sheet
Fit the blade into the hacksaw frame with teeth pointing forward, away from the handle
Tension the blade until firm — there should be no flex or wobble when you press lightly on the side
Mark your cut line clearly with a scribe or marker
Start the cut with two or three light pull strokes to create a guide groove
Apply cutting oil or lubricant when cutting steel to extend blade life and reduce heat
Cut at a steady pace with moderate pressure — let the blade do the work
On thin-wall material, reduce downward pressure and keep the stroke long and smooth
What is the difference between 24 TPI and 32 TPI hacksaw blades?
TPI stands for teeth per inch. The 24 TPI blade has larger teeth and cuts faster through thicker, solid material like bar stock, angle iron and heavy-wall pipe. The 32 TPI has finer teeth suited to thin-wall tube, sheet metal, threaded rod and smaller profiles where a coarser blade would strip or snatch. A useful rule of thumb is to always keep at least three teeth in contact with the material — that tells you which TPI you need.
Why choose bi-metal blades over standard carbon steel hacksaw blades?
Bi-metal blades have a high-speed steel cutting edge bonded to a flexible alloy steel body. Carbon steel blades are hardened throughout, which makes them more brittle and prone to snapping if they twist or bind slightly. Bi-metal blades flex rather than snap, and the HSS teeth hold their edge longer, meaning fewer blade changes on longer jobs. The cost difference per blade is small; the difference in performance over a full day's cutting is noticeable.
Will these blades fit my existing hacksaw frame?
These are standard 12 inch blades and will fit the vast majority of hacksaw frames sold in the UK. Most frames accept blades via two pins at each end, and the 12 inch length is the universal standard for full-size hacksaws. Junior hacksaws use a shorter 6 inch blade, so these will not fit those smaller frames.
These bi-metal hacksaw blades are constructed with a high-speed steel cutting edge welded to a flexible alloy steel backing. This combination gives the teeth the hardness needed to cut ferrous and non-ferrous metals while allowing the blade body to absorb flex without fracturing. Available in 24 and 32 teeth per inch configurations to suit different material thicknesses. Standard 12 inch length fits all full-size hacksaw frames.
Blade Length
12 inch (300mm)
Tooth Configurations
24 TPI, 32 TPI
Blade Type
Bi-metal
Cutting Edge Material
High-speed steel (HSS)
Body Material
Flexible alloy steel
Compatible Frame
Standard full-size hacksaw frame
Size
12in – 24pi, 12in – 32pi
Box Quantity
10, 100, 2
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