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86-15852949220
NANJING ALAS INTERNATIONAL CO., LTD
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When it comes to portable hydraulic rebar cutters, the RC-20 and RC-25 series are the industry workhorses. However, the machine is only as good as its cutting edge. To maintain peak performance and avoid damaging your tool's hydraulic pump, choosing the right replacement rebar cutter blade is essential.
Our blades are precision-engineered to meet the exact OEM specifications of RC series cutters. Whether you are using a standard electric model or a cordless version, these blades ensure a seamless fit. The bolt-hole alignment and thickness are strictly controlled to prevent "blade play," which is the leading cause of jagged cuts and tool vibration.
Mould | Blade dimensions (length × width × thickness) mm |
HBC-19N / HBC-19R | 26×20×10 |
HBC-22 | 30×24×11 |
HBC-25N / HBC-225 | 36×28×13 |
HBC-232 | 44×36×16 |
RC-16 | 22×17×8.5；26×20×9；26×20×9.5；26×20×10 |
RC-20/22 | 30×24×11mm |
RC-25 | 36×28×14mm；36×28×15mm；31.8×27×12mm |
RC-32 | 40×30×15 |
I will provide you with usage suggestions based on material selection, equipment matching, cutting material, and manufacturing process:
The blade material directly determines its hardness, toughness, and service life. Choose the material according to your cutting needs:
C: 0.32–0.45%Cr: 4.75–5.50%Mo: 1.10–1.75%Si: 0.80–1.20%Mn: 0.20–0.60%V: 0.80–1.20%P, S ≤ 0.030%Balance Fe
Medium C: Balances strength and high toughness to avoid chipping.
Cr + Mo + V: Greatly improves heat resistance, hot cracking resistance and impact strength.
Si: Improves high-temperature strength and temper stability.
Hardness: HRC 50–55
Excellent toughness, impact resistance and chipping resistance,outstanding heat resistance and thermal fatigue resistance.
Application: Hot shear blades, thick blades, and high-impact rebar cutting conditions.
Currently the mainstream high-quality blade material on the market, possessing both extremely high wear resistance and toughness, with outstanding resistance to thermal cycling. Even during long-term, high-intensity continuous cutting, it is not prone to deformation or chipping, making it suitable for large-scale processing of high-strength rebar.
C: 1.45–1.70%Cr: 11.00–12.50%Mo: 0.40–0.60%V: 0.15–0.30%Si ≤ 0.40%Mn ≤ 0.40%P, S ≤ 0.030%Balance Fe
Effects of Chemical Composition
High C + high Cr: Forms massive hard carbides for extremely high wear resistance.
Molybdenum (Mo): Refines grains, reduces brittleness, improves toughness and fatigue resistance.
Vanadium (V): Further refines microstructure, enhances wear resistance and edge retention.
High compressive and bending strength,excellent wear life and chipping resistance.
High-hardness, high-wear-resistance tool steel. Its hardness far exceeds that of ordinary alloy blades, and it can handle the cutting needs of high-hardness cold-rolled rebar. Note that its toughness is relatively weaker; it is recommended to avoid using it in high-impact, large-gap cutting conditions.
C: 0.85–0.95%Si: 1.20–1.60%Cr: 0.95–1.25%Mn: 0.30–0.60%P, S ≤ 0.030%Balance Fe
Carbon (C): Increases hardness and wear resistance for a sharp cutting edge.
Silicon (Si): Improves temper stability and red hardness, preventing softening during continuous shearing.
Chromium (Cr): Enhances hardenability for uniform hardness across the blade.
Manganese (Mn): Improves toughness and reduces quenching cracking risk.
Hardness: HRC 60–62
High compressive strength, good wear resistance,moderate toughness and impact resistance.
Application: Economical small-to-medium rebar cutting blades.
An economical and practical choice. It has good hardenability and machinability, suitable for cutting ordinary medium- and low-strength rebar, and is widely used in small and medium-sized projects.
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, suitable for large-scale processing scenarios; rectangular blades are mostly single-sided or double-sided, suitable for small-tonnage cutting machines.
Different tonnage cutting machines (such as RC-16,RC-2O,RC-25) have specific standards for blade thickness, length, width, and bolt hole spacing. Selection must strictly follow the equipment's instruction manual.
Ordinary Round Steel: Low hardness and low cutting resistance. 9CrSi or Cr12MoV materials are sufficient, meeting basic cutting needs while controlling costs.
High-Strength Ribbed Rebar : High hardness, and the ribbed surface structure easily wears down the blade. It is recommended to use H13 material. Its excellent wear resistance and toughness can effectively reduce the risk of chipping, making it suitable for high-strength continuous cutting.
Blades processed through full grinding and vacuum heat treatment are preferred. These blades have a uniform hardness distribution, good edge retention, and are less prone to chipping or dulling during cutting.
Our blades, through optimized hardening depth and toughness, address the common industry problem of brittle fracture when cutting high-strength rebar
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.
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.
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.