Tungsten Carbide Blades for Packaging Industry | Precision Cutting
- HRA 87–92.5Hardness
by grade - 10–20×Edge life vs
tool steel - ±0.01 mmGrinding
tolerance - OEM / ODMSizes ground per
your drawing
Tungsten carbide blades from DEKEER are vacuum-sintered from 100% virgin WC powder, precision ground to ±0.01 mm and engineered for packaging lines where tool steel edges dull within hours.
- Hardness HRA 87–92.5 — edges stay sharp far longer than D2 / SKD11 tool steel
- Clean, burr-free cuts on corrugated board, plastic films, adhesive tapes and cartons
- Five grades from YG6 to YG20 — matched to your material, speed and impact level
- Custom sizes ground to your drawing, a used blade sample or just a machine model
Custom Carbide Blades in Every Shape and Size
Circular carbide blade — large bore ring Circular carbide blade, bolt-hole ring Circular carbide blade, four-bolt fixing Circular carbide blade set, small diameters Five-sided polygonal carbide blade Circular carbide blade, ground radius edge Polygonal carbide blade, multi-facet profile Circular carbide blade, precision ground face Heavy-section circular carbide blade Circular carbide blade on arbor Carbide blade, three-bolt fixing Polygonal carbide blade, custom ground Circular carbide blades, matched diameters Mixed carbide blade profiles to drawing Carbide slotter knife for corrugated board
Tungsten Carbide vs Tool Steel: The Real Cost Comparison
| Selection Factor | Tungsten Carbide (YG Series) | Tool Steel (D2 / SKD11) |
|---|---|---|
| Edge hardness | HRA 87–92.5 (approx. HV 1300–1600) | HRC 58–62 (approx. HV 650–750) |
| Wear resistance | Exceptional — designed for abrasive materials | Moderate — dulls quickly on kraft liner and film |
| Edge retention | 10–20× longer intervals between changes | Frequent sharpening and replacement |
| Resharpening interval | Weeks to months in typical service | Hours to days on abrasive webs |
| Cut quality over life | Stable, burr-free edge for most of its life | Degrades quickly as the edge wears |
| Heat resistance | Keeps hardness at high running temperatures | Softens and loses edge above ~200 °C |
| Edge toughness | Grade-dependent — YG15/YG20 for shock loads | Good — tolerates impact better than fine-grain carbide |
| Initial cost | Higher | Lower |
| Cost per cut | Far lower — the economical choice long term | Higher over the same production volume |
For high-volume packaging lines, carbide almost always wins on total cost. Send us your material and machine speed — our engineers will confirm whether a carbide upgrade pays back for your line.
Carbide Grades and Technical Specifications
| Grade | ISO Class | Hardness (HRA) | Density (g/cm³) | TRS (MPa) | Typical Application |
|---|---|---|---|---|---|
| YG6 (fine grain) | K10 / K20 | ≥89.5 | 14.6–15.0 | ≥1800 | High-wear finish cutting of film, foil and paper |
| YG8 | K20 / K30 | ≥88.0 | 14.5–14.9 | ≥2000 | General-purpose slitting of films, tapes and laminates |
| YG10X (fine grain) | K30 | ≥87.5 | 14.3–14.7 | ≥2200 | Corrugated slitter scorer wheels, board conversion |
| YG15 | K40 | ≥86.5 | 13.9–14.2 | ≥2400 | Slotting and impact-loaded carton applications |
| YG20 | K40 | ≥85.5 | 13.4–13.8 | ≥2600 | Stamping and heavy shock-load cutting |
Not sure which grade fits your material? As a rule: finer, harder grades (YG6/YG8) for abrasive light webs; tougher grades (YG15/YG20) where edges see impact or board edges. Send us your application and we will recommend the grade, thickness and edge profile.
Applications Across the Packaging Industry
Corrugated & Carton Lines
Carbide slotter and slitter blades that hold a clean edge through high-abrasion kraft liner, double-wall board and high-speed converting.
- Rotary slotter and scorer units
- Thin-blade slitter scorer stacks
- Box-making and die-cutting lines
Film & Foil Slitting
Razor-sharp carbide circular blades for BOPP, PET, PE and aluminum foil — clean web cuts without dust, burrs or edge wave.
- Slitter rewinders for flexible film
- Aluminium foil and laminated webs
- Razor-slitting and shear-cut units
Packaging & Sealing Machines
Multi-bolt carbide cutting and sealing blades for VFFS, HFFS and flow wrappers running long shifts on abrasive packaging films.
- VFFS, HFFS and flow wrappers
- Cross-cut and sealing jaw stations
- High-cycle pouch and sachet lines
Machine Compatibility
| Machine / Line Type | Blade Role | What We Match |
|---|---|---|
| Corrugated slitter scorer machines | Slitting and scoring wheels on the slitter shaft | Profile, bevel angle and concentricity for a clean score without board crush |
| Folder-gluer and slotting machines | Slotting and notching knives | Grade and thickness matched to board range (single to double wall) |
| Film and foil slitter rewinders | Circular razor and crush-cut blades | Edge polish and roundness for dust-free web cutting |
| Carton box cutting lines | Cross-cut and four-box knives | Toughness grade for stacked board at high line speed |
| Label and flexible packaging die-cutters | Straight and toothed cutting rules | Sharpness retention for long runs of adhesive label stock |
| Oscillating / vibrating knife cutters (AOL, CNC) | Vibrating cutting blades | Exact fit, rigidity and grade for oscillating holders |
Blades are supplied as finished pieces or blanks, ground to your diameter, bore, thickness and profile. Send the machine model or a used blade — we will reproduce the specification and improve on the edge quality.
Why Source Carbide Blades from DEKEER
01 — Factory Direct
Manufacturer, not a trading companyDekeer Precision Cutting Tools (Nanjing) sinters, grinds and inspects every carbide blade in-house — from virgin WC powder to final edge polish.
02 — Custom Grinding
Diameter, bore, profile and bevel to your specSend a drawing, a used blade or just the machine model. We grind matching dimensions and edge geometry, including single- and double-bevel profiles.
03 — Documented Quality
Certificate with every shipmentEach batch ships with hardness reports (HRA/HV), density data and dimensional inspection of thickness, bore and runout.
04 — After-Sales
12-month warranty and support12-month coverage against manufacturing defects, plus engineering support on grade selection, edge wear and regrind intervals.
How a carbide blade order works, from inquiry to delivery
- 1Send your specDrawing, machine model or a used blade
- 2Quote in 24 hGrade, size and edge profile confirmed
- 3Drawing confirmationYou approve the final specification
- 4ProductionSintering, precision grinding, edge polish
- 5Final inspectionHardness, tolerances and runout checks
- 6Export packingShock-proof sealed packs, worldwide shipping
Frequently Asked Questions
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Talk to a carbide blade engineer
Send your machine model, the material you cut or a photo of the blade you are replacing. Our engineering team will confirm the right grade, size and edge profile within 24 hours — free of charge and with no obligation.