Non-Standard Round Blades

Alloy Slitter Blade

Alloy slitter blade for heavy-duty slitting, delivering clean edges and durable cutting performance.

Customized sizes are available, according to your drawing or sample.

Fully Custom
Expedited Production Processing

The alloy slitter blade is a precision circular knife engineered for continuous longitudinal slitting of paper, film, foil, and nonwoven webs. Designed as a direct replacement or upgrade for OEM tooling on slitter rewinders and converting lines, these blades are manufactured from high-alloy tool steels including D2 (Cr12MoV), M2 high-speed steel, and H13, with hardness values ranging from HRC 58 to 65 after vacuum heat treatment. The combination of tight dimensional tolerances, typically within ±0.005 mm on thickness, and a fine-ground cutting edge ensures clean, burr-free cuts and extended service intervals in high-cycle production environments. Procurement engineers can specify outer diameters from 60 mm to 150 mm, bore sizes to match arbor requirements, and thicknesses as low as 0.5 mm, with full customisation accepted against drawings or physical samples.

Vacuum Heat-Treated Steel Grades
Available in D2 (Cr12MoV) for general-purpose wear resistance, M2 HSS for high-temperature edge retention, and H13 for tougher applications. Hardness is controlled to HRC 58–62 for D2 and HRC 62–65 for M2, ensuring a balance of toughness and cutting performance.
Tight Dimensional Tolerances
Thickness tolerance is held to ±0.005 mm and parallelism to within 0.002 mm for standard blades. Bore tolerances are machined to H7 or as specified, ensuring consistent runout and minimal vibration at line speeds exceeding 300 m/min.
Fine-Ground Cutting Edge Geometry
Blade edges are ground to a surface finish of Ra 0.2–0.4 µm, with standard edge angles of 30°, 45°, or 60° available. Custom edge profiles, including single-bevel, double-bevel, and radiused edges, are produced to match specific material separation requirements.
Full Customisation from Drawing or Sample
Non-standard OD/ID/thickness combinations, keyways, pin holes, and countersunk mounting features are machined in-house. Blades can be reverse-engineered from a worn sample or produced to a customer-supplied 2D drawing with a 3D CAD model provided for approval before production.
Multi-Layer Coating Options
Physical vapour deposition (PVD) coatings such as TiN, TiCN, and AlCrN are applied to increase surface hardness above HV 2500 and reduce friction coefficients, particularly beneficial when slitting abrasive or adhesive-coated substrates.

Take a Closer Look

Paper Converting
Flexible Packaging
Nonwoven and Textile Converting
Battery and Electrode Manufacturing
Label and Tape Slitting

Paper Converting
Top and bottom slitter blades for sheeting and slitting lines processing thermal paper, kraft paper, and lightweight coated papers. D2 blades at HRC 60–62 provide the edge stability needed for dust-free cuts on high-speed rewinders.
Flexible Packaging
Slitting of BOPP, PET, PE, and aluminium foil laminates on slitter rewinders. M2 HSS blades maintain edge sharpness when cutting through multi-layer structures with adhesive, reducing blade change frequency.
Nonwoven and Textile Converting
Circular slitting of spunbond, meltblown, and composite nonwovens. H13 blades offer the toughness required to withstand the abrasive nature of these materials without micro-chipping.
Battery and Electrode Manufacturing
Precision slitting of copper and aluminium foils for lithium-ion battery electrodes. Ultra-thin blades with thicknesses down to 0.5 mm and high-precision bores ensure minimal burr formation on critical battery components.
Label and Tape Slitting
Slitting of pressure-sensitive adhesive tapes and label stock. Coated D2 blades reduce adhesive build-up on the cutting edge, extending run times between cleaning cycles.

Our Team of Engineers Will Design the Best Solution for You

It has a variety of materials to choose from, sharp and wear-resistant, and supports customization.

After my company for a long time of continuous efforts and innovation, research and development to produce high-performance paper cutting big swing round knife, on the basis of the original greatly enhance the wear resistance, heat resistance, trace element to add also makes the blade has a stronger cutting force.

Technical Parameters

Product Name	Alloy Slitter Blade
Size (mm)	60x40x1 100x66x0.8 100x70x1.2 102x75x1 105x70x1.2
	62x35x0.5 100x66x1 100x75x1.2 105x65x1.2 105x70x1.5
	65x40x0.6 108x75x1.2 110x75x1.2 142x116x1.2 150x80x2.2
	65x40x1 70x28x12 70x45x3 70x45x8 80x50x8
	68x46x0.5 90x60x10 90x65x10 105x60x15 150x120x12
	70x40x1 80x50x10 80x55x10 90x65x8 150x120x15

Technical Specifications

Dimensions	Outer diameter: 60–150 mm; inner diameter: 25.4–120 mm; thickness: 0.5–15 mm. Common sizes include 100×66×1 mm, 105×70×1.2 mm, and 150×80×2.2 mm. Non-standard dimensions manufactured to order.
Materials	D2 (Cr12MoV), M2 HSS, H13, SKD11, 9CrSi, tungsten carbide (upon request)
Hardness	HRC 58–62 (D2/SKD11), HRC 62–65 (M2 HSS), HRC 50–54 (H13). Carbide grades available with HRA 89–92.
Tolerances	Thickness: ±0.005 mm; parallelism: ≤0.002 mm; bore: H7 standard; runout: ≤0.01 mm. Tighter tolerances available on request.
Surface Finish	Cutting edge: Ra 0.2–0.4 µm; blade faces: Ra 0.4–0.8 µm. Mirror finish (Ra ≤0.05 µm) available for adhesive-sensitive applications.
Customisation	Buyers can specify OD, ID, thickness, edge angle, coating type, keyway dimensions, pin holes, and countersinks. Submit a drawing, sample blade, or OEM part number for a matched replacement.

Why Choose Yishi

YISHI Machinery operates an in-house heat treatment facility with vacuum furnaces, enabling precise control of hardness profiles and minimising distortion on thin-gauge slitter blades. All blades are inspected with a 0.001 mm resolution micrometer and a surface roughness tester, with inspection reports provided upon request. Engineering support includes material selection guidance based on your substrate type and line speed, and a CAD-confirmation step before production. Expedited lead times are available for standard semi-finished blanks, and no minimum order quantity is enforced for custom prototypes.

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Frequently Asked Questions

What steel grade should I select for slitting abrasive paper?

For abrasive paper or coated stocks, D2 (Cr12MoV) at HRC 60–62 is typically recommended due to its high chromium content (11–13%) which provides excellent wear resistance. If heat build-up is a concern at high line speeds, M2 HSS offers better hot hardness and can maintain its cutting edge at elevated temperatures.
Can you match an existing blade from a sample?

Yes. We can reverse-engineer a blade from a worn sample by measuring the OD, ID, thickness, and edge geometry on a coordinate measuring machine (CMM). We then produce a CAD drawing for your approval before manufacturing. Providing the OEM machine model and original part number, if available, helps expedite the process.
What is the typical lead time for a custom alloy slitter blade?

Standard custom blades are produced within 15–20 working days after drawing approval. For urgent requirements, we maintain a stock of semi-finished blanks in common D2 and M2 grades that can be finish-ground and shipped in 7–10 working days. Coated blades require an additional 3–5 days for PVD processing.
How do I specify the bore tolerance for my slitter blade?

The standard bore tolerance is H7, which provides a precise sliding fit on most arbors. If your application requires a tighter interference fit or a specific clearance, you can specify the exact bore dimension with a unilateral or bilateral tolerance on your drawing. We also machine keyways to DIN 6885 or customer-specified standards.
What coatings are available, and when should I use them?

We offer TiN (gold), TiCN (grey), and AlCrN (dark grey) PVD coatings. TiN is a general-purpose coating that reduces friction and adhesive wear. TiCN provides higher hardness (HV ~3000) for abrasive materials. AlCrN is recommended for high-temperature applications as it maintains hardness up to 900°C, making it suitable for dry slitting or high-speed lines.
Do you provide inspection reports with each batch?

A dimensional inspection report covering OD, ID, thickness, parallelism, and bore tolerance is available upon request. Hardness testing is performed on a sample basis per heat treatment lot using a calibrated Rockwell hardness tester, and the results can be included in the shipment documentation.