The MK-465D is MK Diamond's Premium Grade dry-cutting segmented blade for asphalt and green concrete, and this is the 12-inch size, part number 151417. It is bought by paving and utility crews, landscapers and maintenance departments cutting pavement, overlay and fresh slab. Asphalt and green concrete are soft and abrasive rather than hard, so the blade needs a hard bond that resists wear. The 12-inch size suits handheld cut-off saws and smaller walk-behind saws where an 18-inch blade is more than the job or the machine calls for.
Use cases
- Asphalt patch and trench cuts. Scoring and cutting out pavement sections for repair or utility work.
- Green concrete control joints. Cutting joints in a fresh slab before shrinkage cracking starts.
- Handheld cut-off saw work. Pavement cuts in tight areas a walk-behind saw cannot reach.
- Asphalt overlay. Cutting through overlay and into the course below.
- Curb and gutter repair. Cutting out damaged sections for replacement.
Specifications
- Diameter: 12 inches (305 mm)
- Blade width (kerf): 0.250 inch
- Arbor: 1 inch
- Segment height: 10 mm
- Construction: Laser welded
- Grade: Premium
- Cutting method: Dry
- Application: Asphalt and green concrete
- MK part number: 151417
Fits
The 151417 uses a standard 1-inch arbor and mounts on a handheld cut-off saw or walk-behind saw rated for a 12-inch blade. Confirm your saw's blade capacity, arbor size and shaft speed before ordering. MK also publishes the MK-465D in 0.125 inch and 0.187 inch widths in this diameter, so check that the 0.250 inch kerf is the one your work calls for.
Frequently asked questions
What does green concrete mean here?
Concrete that has not fully cured. It is softer and more abrasive than cured slab, so it takes a hard bond that resists wear rather than the soft bond a cured-concrete blade uses. Cutting green concrete early is how control joints get ahead of shrinkage cracking.
Can this blade be run wet?
It is classified as a dry-cutting blade, and a dry blade can be run wet where the saw supplies water. Running it wet removes heat and dust and often extends blade life. A wet-only blade, by contrast, must never be run dry.
Why is the kerf 0.250 inch rather than 0.125 inch?
A wider kerf gives the blade more steel behind the segments, which helps in abrasive material where the core is under attack. It also removes more material per pass, so it loads the saw harder. MK offers this diameter in narrower widths if you want a faster, lighter cut.
Will it cut cured concrete too?
It will cut, but it will glaze. The hard bond that protects it in asphalt does not wear back fast enough in cured concrete to keep fresh diamond exposed. For cured slab use a blade bonded for cured concrete.
How do I stop the blade wearing out from below?
Undercutting comes from abrasive slurry eroding the core beneath the segments. Keep the cut clear, step-cut instead of burying the blade, and use a blade built for asphalt rather than a general-purpose one.
MK Diamond Products is an American diamond-tool manufacturer whose family business traces back to 1868, when Joseph Musto founded the Musto Steam Marble Mill in San Francisco. Discount Cleaning Products is an authorized MK Diamond dealer and stocks MK blades and profiling tools alongside its surface preparation line, with US-based order support if you need help matching a blade to your saw.
