Phone:
86-15852949220
NANJING ALAS INTERNATIONAL CO., LTD
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Top Material: We use high-grade H13 (SKD-61) alloy steel. Special vacuum heat treatment gives it a hardness of HRC 50-55. This ensures great wear resistance and durability.
Longer Service Life: Our special wear-resistant coating reduces friction. It prevents blades from chipping or dulling early—even when cutting hard rebar.
Precise Design: Each blade is CNC-ground for perfect alignment. This eases the load on your machine’s motor and saves energy.
Material selection
Machine matching
Rebar type adaptation
Manufacturing processes
Industry rules (including guidelines from the Ministry of Housing and Urban-Rural Development) require better cutting precision and more wear-resistant blades.
Old, surface-hardened blades chip often. They cause machine stops and fail to meet rebar end-face flatness requirements.
Carbon (C): 0.32~0.45%: Core element for base hardness and strength. It forms carbides with Cr, Mo, and V. Balances hardness and toughness to avoid brittleness.
Chromium (Cr): 4.75~5.50%: Improves hardenability, wear resistance, and high-temperature oxidation resistance. Forms a protective Cr₂O₃ film on the surface.
Molybdenum (Mo): 1.10~1.75%: Boosts high-temperature strength and resists temper softening. Maintains hardness (≥45 HRC) at 600℃. Refines grains and reduces brittle fracture risk.
Vanadium (V): 0.80~1.20%: Forms hard MC-type carbides (hardness up to 2800HV) for better wear resistance. Refines grain structure and prevents chipping.
Silicon (Si): 0.80~1.20%: Improves high-temperature oxidation resistance and matrix strength. Enhances thermal stability during continuous cutting.
Manganese (Mn): 0.20~0.50%: Helps deoxidize and improves hardenability. Low content avoids tissue segregation.
Impurities (P≤0.03%, S≤0.03%): Strictly controlled to prevent cold brittleness and cracks. Ensures overall toughness.
Wear Resistance: Uniform MC-type and Cr-rich carbides resist wear from ribbed rebar. Lasts 40% longer than regular blades.
Impact Toughness: Controlled C content and grain refinement prevent brittle fracture. Can cut multiple rebars at once without chipping.
Thermal Stability: Mo and Cr improve high-temperature performance. Maintains sharpness and hardness during high-speed cutting. Retains ≥45 HRC at 600℃.
Hardenability: Uniform hardness (HRC 58-62) from core to surface. Ensures consistent cutting performance.
Processability: Annealed H13 (hardness ≤229 HB) is easy to CNC grind. Achieves micron-level flatness and perfect machine alignment.
High-quality H13 (SKD-61) alloy steel—wear-resistant and suitable for all rebar cutting needs. Enhanced by our wear-resistant coating and CNC grinding.
Full-body vacuum heat treatment: Avoids oxidation and decarburization. Removes internal stress and brings out H13’s best performance.
H13 (American AISI standard): More vanadium. Better wear resistance and toughness—great for heavy-duty rebar cutting.
SKD-61 (Japanese JIS standard): More molybdenum. Better high-temperature strength—complements H13 in high-heat work.
Core-to-surface hardness of HRC 50-55. Enhanced by wear resistance, durability, and our wear-resistant coating.
Uniform hardness prevents breaking—even when cutting multiple rebars.
Solves brittle fracture when cutting high-strength rebar, thanks to H13’s toughness.
Blades stay sharp and wear-resistant during continuous high-speed cutting (which creates heat). Supported by H13’s Mo and Cr content.
Vacuum heat treatment avoids oxidation and decarburization. Removes gas from steel to boost thermal stability.
H13 stays hard (≥45 HRC) at 600℃ for stable performance during long work.
Each blade is CNC-ground and precision-ground on all four edges for perfect alignment.
Extends service life by 4x. Reduces inventory costs.
Great for large-scale processing (fast and low-cost).
Fits perfectly in the blade seat. Eliminates "chatter" (wears machine cutting head and reduces blade wear resistance).
Meets JGJ107-2016 standards for rebar mechanical connection.
Ensures flat rebar end-faces (no bending, distortion, or horseshoe shape).
Mainstream high-quality material with a scientific composition (balances wear resistance and toughness).
Great wear resistance, toughness, and thermal fatigue resistance (from Cr, Mo, and V).
No deformation or chipping during long, intense cutting (uniform hardness and grain structure).
Ideal for high-strength rebar (Grade 60, 75), high-hardness cold-rolled rebar, and ordinary round steel.
Lasts 40% longer than regular blades (after vacuum heat treatment). Saves money.
Square blades: 4 usable edges (rotate to extend life). Great for large-scale processing and high-speed lines. Maximizes wear-resistant blade value.
Rectangular blades: 1 or 2 edges. For small-tonnage machines (e.g., below GQ40). Good for small projects with low cutting frequency.
Different machine tonnages (GQ40, GQ50, GQ60) have strict standards for blade thickness, length, width, and bolt hole spacing.
Parameters match mainstream machines (e.g., Topmac GQ40, GQ50).
Follow the machine manual for a perfect fit. Avoids safety risks, cutting defects, and reduced wear resistance.
Ordinary round steel: Low hardness and cutting resistance. Use H13 (SKD-61) — high wear resistance, cost-effective, fits non-mechanical connection projects.
High-strength ribbed rebar (Grade 60, 75): High hardness, ribbed surface wears blades. Use H13 (SKD-61) — superior wear resistance and toughness, less chipping, supports continuous cutting.
Uniform hardness: Vacuum heat treatment removes internal stress. No local brittleness or deformation. Enhances wear resistance.
Stable sharpness: Precision grinding ensures sharp edges and micron-level flatness. Reduces cutting resistance, improves efficiency, and maintains long-term wear resistance.
Low failure rate: Less chipping or dulling. Avoids costly machine stops and reduces downtime.
Optimized hardening depth and toughness. Solves brittle fracture when cutting high-strength rebar. Maintains excellent wear resistance (uses H13’s advantages).
Make non-standard blades from your drawings, dimensions (length x width x thickness + hole size/spacing), and performance needs.
Fits all machine brands and models.
Strict material and hardness testing. Ensures quality and stability. Verifies H13’s composition and performance meet cutting needs.
High-performance, maintenance-free wear-resistant spares (ready to install).
Our wear-resistant blades last 40% longer than standard options. Keeps projects on time and on budget (thanks to H13’s superior wear resistance).
Global supply. Reliable after-sales service and technical support.
Helps you meet industry standards and gain market advantages.
| NO. | Product Name | Specification Dimensions (length x width x height/thickness) ） | Material |
| 1 | rebar cutting blade size | 78*78*17 mm | 9crsi，SKD-11，H13 |
| 2 | 80*80*17 mm | ||
| 3 | 80*80*30mm | ||
| 4 | 83*83*16 mm | ||
| 5 | 83*83*26 mm | ||
| 6 | 83*83*26 mm | ||
| 7 | 90*90*20 mm | ||
| 8 | 90*90*26mm | ||
| 9 | 100*100*20 mm | ||
| 10 | 100*100*30mm | ||
| 11 | 110*110*20mm | ||
| 12 | 100*30*75mm | ||
| 13 | 85x65x30 mm | ||
| 14 | Handheld rebar cutting machine blade | 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 |
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.
Wear resistance: Cr12MoV has significantly better wear resistance than 9CrSi. Under the same working conditions, the number of cuts for Cr12MoV is usually 2-3 times that of 9CrSi.
Cost: 9CrSi is more cost-effective, suitable for projects sensitive to initial purchase costs; although the unit price of Cr12MoV is slightly higher, its lower replacement frequency results in a lower overall cutting cost per ton of rebar.
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.