Key features
- Fine-grain tungsten carbide, hardness HRA 89–92
- Mirror-polished edge, Ra 0.05 μm on request
- Single bevel, chamfer and laminated edge types
- Thickness 0.05 – 0.5 mm, widths and lengths to your holder
- Service life many times longer than spring steel blades
Specifications
| Material | Fine-grain tungsten carbide; ceramic option |
| Hardness | HRA 89–92 |
| Thickness | 0.05 – 0.5 mm |
| Width | 10 – 80 mm |
| Length | Up to 4,000 mm |
| Edge | Single bevel, double bevel, chamfer, rounded |
| Straightness | ≤ 0.02 mm / 1,000 mm |
| Surface | Mirror polished, Ra 0.05 – 0.1 μm on edge side |
| MOQ | 1 pc |
Applications
Gravure printing
Ink doctor blades for rotogravure presses.
Coating lines
Coating metering blades for tape, battery and optical film.
Abrasive film slitting
Carbide circular knives for filled and abrasive webs.
Screen & display cutting
Carbide blades for precision display material cutting.
Blade types we make in this line
A partial list — if you do not see your blade, send us the drawing or a photo and we will confirm.
Ink doctor bladesCoating metering bladesCombined doctor bladesCeramic doctor bladesCarbide film slitting knivesLCD cutting bladesCarbide edge-trim knives
Materials used for this blade
Cr12MoV
HRC 58–62 · High
Widely used, well understood grade. Good balance of cost and life.
Read the full grade guideSKD-11 (D2)
HRC 60–64 · Very high
Longer life than Cr12MoV at higher cost. The default upgrade.
Read the full grade guide9CrSi
HRC 56–60 · Medium-high
Economical and forgiving. Common for large straight knives.
Read the full grade guideFrequently asked questions
Streaks usually mean a nicked or uneven doctor blade edge, or wrong blade pressure. Carbide holds a straight, even edge far longer than steel, so it removes streaking caused by edge wear. If streaks appear from day one, check the pressure setting and holder parallelism first.
Single bevel for standard ink doctoring, chamfered edges for high-line-speed coating, rounded edges where you need softer metering. Send us your coating or ink system and we will recommend the edge.
For abrasive and filled systems, yes — service life is commonly many times longer, changeovers drop, and the metered film weight stays stable. For short-run gentle inks, steel is still economical. Tell us your substrate and we will give an honest recommendation.