Core Technical Features

Steel Grade Matched to Your Production
UNIK molds are machined from 42CrMo for standard concrete mixes, with tool steel (Cr12MoV grade) available for highly abrasive mixes containing sharp sand or recycled aggregates. Steel selection is based on your daily output, concrete recipe, and expected total cycles-not on a one-size-fits-all formula.

Carburizing Heat Treatment
We apply a carburizing process that hardens the mold surface to HRC 58–62 while keeping the core at HRC 35–40. The hard outer layer resists abrasion from concrete aggregates. The tough inner core absorbs vibration and prevents cracking. This combination eliminates the brittle failure common in fully hardened molds.

Precision CNC Machining
All cavity surfaces are CNC‑finished to Ra 1.6 or better. A smooth surface allows concrete to release cleanly without sticking. It also reduces localized wear, extending the usable life of the cavity.

Engineered Corner Radius
Every internal corner receives a 3–5mm radius. Sharp corners concentrate vibration stress and develop fatigue cracks over time. Radiused corners allow stress to flow continuously, removing the primary initiation point for mold failure.

Exact Tolerance Control
Critical dimensions are held to ±0.1mm. This ensures that every paver leaving the mold matches the same length, width, and thickness. Tight tolerances reduce material waste and speed up on‑site laying because pavers fit together as designed.

Practical Benefits for Your Operation

80,000 to 100,000 cycles – Under normal production conditions with standard concrete mixes, a UNIK mold delivers between eighty thousand and one hundred thousand cycles.

Lower cost per paver – A mold with double the life reduces your cost per thousand pavers, even if the upfront price is higher than a budget alternative.

Less downtime – You replace molds half as often. Fewer mold changes mean more running hours and fewer interruptions to your production schedule.

Faster demolding – The Ra 1.6 finish and correct draft angles allow green pavers to release immediately after vibration, without sticking or edge damage.

Consistent interlock fit – Exact cavity dimensions produce pavers that lock together correctly. No gaps, no misalignment, no rework.