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H13 maintains its hardness even when the blade edge gets hot from repetitive, high-speed shearing—unlike other steels that soften under frictional heat, ensuring consistent performance through thousands of cuts per shift.
Unlike "brittle" high-carbon steels, H13 can absorb the violent shock of snapping a 40mm rebar without cracking or shattering, addressing the common industry problem of brittle fracture when cutting high-strength rebar.
Our H13 blades undergo a rigorous vacuum quenching process, reaching a balanced hardness of HRC 50-55—the "sweet spot" that prevents both deformation and chipping. This precise heat treatment ensures uniform hardness distribution and superior edge retention.
Fine for light tasks, such as cutting ordinary round steel (low hardness, low cutting resistance). These materials meet basic cutting needs while controlling costs.
Common blade shapes are square (four sides usable) and rectangular. Square blades allow for the rotation of four cutting edges, significantly extending their service life and suiting large-scale processing scenarios; rectangular blades are mostly single-sided or double-sided, ideal for small-tonnage cutting machines.
Different tonnage cutting machines (such as GQ40, GQ50, GQ60) have specific standards for blade thickness, length, width, and bolt hole spacing. Selection must strictly follow the equipment's instruction manual.
| NO. | Product Name | Specification Dimensions (length x width x height/thickness) ） | Material | Remarks |
| 1 | rebar cutting blade size | 78*78*17 mm | H13 | Customization services are available; we can manufacture according to your drawings, with a minimum order quantity of 2 piece. |
| 2 | 80*80*17 mm | |||
| 3 | 80*80*30 mm | |||
| 4 | 83*83*16 mm | |||
| 5 | 83*83*26 mm | |||
| 6 | 83*83*26 mm | |||
| 7 | 90*90*20mm | |||
| 8 | 90*90*26 mm | |||
| 9 | 100*100*20mm | |||
| 10 | 100*100*30mm | |||
| 11 | 110*110*20 mm | |||
| 12 | 100*30*75 mm | |||
| 13 | 85x65x30mm | |||
| 14 | Portable Rebar Cutting Blades size | 26×20×10 mm | ||
| 15 | 30×24×11 mm | |||
| 16 | 36×28×14 mm | |||
| 17 | 40×30×15 mm | |||
Base Grade | Steel Category | Chinese Standard GB/T 1299 | American Standard ASTM | German Standard DIN (W-Nr.) | Japanese Standard JIS |
H13 | Hot Work Die Steel | 4Cr5MoSiV1 | H13 | 1.2344 | SKD61 |
Cr12MoV | Cold Work Die Steel | Cr12MoV | 1.2601 | SKD11 | |
9CrSi | Alloy Tool Steel (Cutting Tool Steel) | 9CrSi | 1.2108 |
Geka and Piranha (Ironworker shear stations)
Toyo and Schnell (Automatic rebar lines)
Generic hydraulic rebar cutters (Portable and bench-top models)
Based on different working conditions and budget requirements, we offer three general industrial-grade alloy steel materials:
9CrSi (Alloy Tool Steel): An economical choice. It has good hardenability and machinability, suitable for cutting ordinary medium-to-low strength rebar, and is widely used in small and medium-sized projects.
Cr12MoV (Cold Work Die Steel): High-end wear-resistant type. High carbon and high chromium content, after heat treatment, it has excellent wear resistance, making it an ideal choice for continuous cutting of high-strength rebar. Its service life is much longer than 9CrSi.
H13 (Hot Work Die Steel/Red Hard Steel): High toughness and high wear resistance. It exhibits excellent resistance to chipping and thermal stability in rebar cutting applications, especially suitable for high-speed production lines or online cutting of hot-rolled rebar, and cutting of ultra-thick rebar and composite materials of scrap rebar.
Chipping is usually caused by the following factors:
Insufficient toughness: Using ultra-hard but low-toughness materials to cut large-diameter or ultra-hard rebar can easily lead to brittle fracture. In this case, we recommend switching to H13 material, as its excellent toughness can effectively absorb impact forces.
Improper clearance: Too large or too small a gap between the upper and lower blades will lead to uneven stress, resulting in chipping.
Insufficient heat treatment: Internal stress is not completely eliminated. All our blades use vacuum heat treatment technology to ensure uniform hardness from the inside out, greatly reducing the chipping rate.
For high-strength or ribbed rebar, we strongly recommend H13:
If you are facing extremely high operating intensity and are concerned about downtime due to blade chipping, choose H13. Its impact fatigue resistance is top-notch in the rebar processing industry.
Question 4: Can you customize non-standard size blades according to drawings?
Yes. We understand that blade specifications vary among different equipment brands (e.g., from Italy, Germany, or China). We are equipped with a full set of CNC machining equipment, and you only need to provide the following information:
Detailed drawings (including length, width, thickness, and hole dimensions).
Material requirements (9CrSi, Cr12MoV, or H13).
Specifications of the workpiece to be processed (rebar diameter and strength grade).
We can provide a 1:1 precise customized solution.
Regular rotation: Our blades are usually designed with 4 or 8 cutting edges. Please rotate the blade promptly when one cutting edge becomes dull.
Tighten bolts: Ensure the blades are securely installed. Any slight looseness will cause destructive impact during the cutting process.
Control the gap: Adjust a reasonable blade gap according to the rebar diameter, usually about 10% of the rebar diameter.
Nanjing Alas International Co., Ltd. is a professional industrial tooling manufacturer focused on shear blades, bending dies, shredder blades, and custom wear parts. We offer full application engineering, material selection, setup guidance, and after-sales support to global customers.
Tell us your requirements, and our engineering team will provide professional solutions for blade specification, tool life optimization, and cost-effective production.
Choosing the ideal rebar cutting blade requires balancing hardness and toughness. Key factors include the grade of steel being cut (e.g., Grade 60 vs. Grade 80), the blade's material composition (such as Cr12mov, H13 steel), and the specific heat treatment process. This article breaks down the technical specifications you need to look for—from edge geometry to wear resistance—ensuring you select a tool that maximizes service life and safety on the job site
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