Phone:
86-15852949220
NANJING ALAS INTERNATIONAL CO., LTD
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Carbon (C): 0.32–0.45%
Chromium (Cr): 4.75–5.50%
Molybdenum (Mo): 1.10–1.75%
Silicon (Si): 0.80–1.20%
Manganese (Mn): 0.20–0.60%
Vanadium (V): 0.80–1.20%
Phosphorus (P) & Sulfur (S): ≤ 0.030%
Rest: Iron (Fe)
Medium carbon: Balances strength and toughness to prevent chipping.
Cr + Mo + V: Makes it heat-resistant, less likely to crack, and stronger against impacts.
Silicon: Keeps it strong at high temperatures and stable over time.
Hardness: HRC 50–55 (up to HRC 58–60 with special heat treatment)
Tough and impact-resistant; not easy to chip or break
Handles heat well and resists fatigue from repeated use
Good for cutting thick, high-strength rebar
Square blades: 4 usable edges; rotate to extend life. Great for large-scale work.
Rectangular blades: 1 or 2 edges; best for small-tonnage cutters.
Cutters like GQ40, GQ50, GQ60 have specific requirements for blade thickness, length, width, and bolt holes.
Always follow the equipment’s instruction manual when choosing a blade.
Large projects (bridges, highways, dams)
Cutting thick, high-strength rebar (size #8 and above)
Fast, frequent cutting cycles
Choose blades made with full grinding and vacuum heat treatment.
These blades have even hardness, stay sharp longer, and don’t chip or dull easily.
H13’s “red hardness” keeps it strong even when it gets hot from continuous cutting—no softening or dulling.
H13 blades often have 4 precision-ground edges.
When one edge wears out, rotate the blade 90° to use a new edge—4 uses per blade.
Cuts cleanly, with no burrs or crushed ends. Processed rebar is ready to use right away.
| NO. | Product Name | Specification Dimensions (length x width x height/thickness) ） | Material | Remarks |
| 1 | rebar 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*20 mm | |||
| 8 | 90*90*26 mm | |||
| 9 | 100*100*20 mm | |||
| 10 | 100*100*30 mm | |||
| 11 | 110*110*20 mm | |||
| 12 | 100*30*75 mm | |||
| 13 | 85x65x30 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 |
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.
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.