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NANJING ALAS INTERNATIONAL CO., LTD
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Carbon (C): 0.32~0.45%
Silicon (Si): 0.80~1.20%
Manganese (Mn): 0.20~0.50%
Chromium (Cr): 4.75~5.50%
Molybdenum (Mo): 1.10~1.75%
Vanadium (V): 0.80~1.20%
Phosphorus (P): ≤0.03%
Sulfur (S): ≤0.03%
Carbon (C): The main element for hardness and strength. It mixes with other elements to make the blade wear-resistant. 0.32~0.45% is the right amount—too much makes the blade brittle (easy to chip), too little makes it wear fast.
Chromium (Cr): Makes the blade easier to harden, more wear-resistant, and better at fighting rust. It forms a protective layer on the blade surface to reduce wear and rust.
Molybdenum (Mo): Boosts toughness and keeps the blade strong at high temperatures. It stops the blade from bending or losing hardness during long, heavy cutting (up to 540℃).
Vanadium (V): Makes the blade’s structure finer, harder, and more tough. It forms hard particles that keep the blade sharp longer, reducing how often you need to replace it.
Silicon (Si) & Manganese (Mn): Silicon helps harden the blade and fight rust; manganese makes it tougher and easier to shape into the right size.
Phosphorus (P) & Sulfur (S): Impurities that we keep low (≤0.03%). Too much makes the blade brittle and easy to break.
Wear-Resistant: Hard particles from chromium, molybdenum, and vanadium keep the blade from wearing down, even on tough rebar.
Tough: Doesn’t chip or break easily during heavy cutting. Can handle long hours of use without bending.
Heat-Stable: Stays hard and strong even at high temperatures (up to 540℃), so it doesn’t bend or lose sharpness.
Easy to Harden: Hardens evenly, so the whole blade works the same. Doesn’t bend much during heat treatment, making it easy to shape precisely.
Long-Lasting: Lasts much longer than regular blades. Saves money on shipping and customs for international orders.
Square blades: Can use all 4 sides, lasts longer. Good for large-scale work.
Rectangular blades: Usually 1 or 2 sides usable. Good for small cutting machines.
Ordinary Round Steel: Soft and easy to cut. H13 lasts long and works steadily, so you don’t need to replace blades often.
High-Strength Ribbed Rebar: Hard, with rough surfaces that wear blades. H13’s wear resistance and toughness prevent chipping, perfect for heavy cutting.
Scrap Rebar: Rusty and dirty, which wears blades fast. H13 resists wear and rust, making it last longer.
Have even hardness
Stay sharp longer
Don’t chip or dull easily
Ensure consistent cutting quality
| NO. | Product Name | Specification Dimensions (length x width x height/thickness) ） | Material | Remarks |
| 1 | Steel Bar Cutting Blade size | 78*78*17 mm | 9crsi，SKD-11，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*26mm | |||
| 9 | 100*100*20mm | |||
| 10 | 100*100*30mm | |||
| 11 | 110*110*20 mm | |||
| 12 | 100*30*75 mm | |||
| 13 | 85x65x30 mm | |||
| 14 | Handheld steel bar 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): 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.
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.