ALAS Cr12MoV (Premium AISI D2) Rebar Blades Product Manual
1. What Is Cr12MoV Steel & Why It Is the Premier Choice for Rebar Shearing
Cr12MoV is a high-carbon, high-chromium cold-work die steel standardized under GB/T 1299. It matches international grades AISI D2, DIN 1.2601 and JIS SKD11, and is widely recognized as the top-grade material for heavy-duty rebar shearing across the industry.
Precise Chemical Composition: C: 1.45–1.70%, Cr: 11.0–12.5%, Mo: 0.40–0.60%, V: 0.15–0.30%. This balanced chemical structure forms dense, hard chromium carbides throughout the steel matrix, delivering exceptional wear resistance and compression strength for long-cycle, high-load rebar cutting.
Core Performance Advantages of ALAS Cr12MoV Blades
Built for continuous high-strength rebar cutting, ALAS Cr12MoV blades outperform regular alloy blades in four key areas, delivering more stable field performance and lower overall operational costs:
Stable, Uniform Hardness: Precision vacuum heat treatment delivers consistent hardness of HRC 58–62. Excellent hardenability ensures uniform hardness from surface to core, no soft spots, even on thick blade sizes.
Superior Wear Resistance: Fine, evenly distributed carbides effectively resist abrasive wear from high-tensile rebar ribs, delivering far longer service life than standard 9CrSi and ordinary alloy blades.
Minimal Heat Deformation: The steel maintains excellent dimensional stability during heat treatment. All ALAS blades are CNC precision ground, ensuring accurate edge geometry and precise bolt hole alignment for perfect machine fitting.
Longer Service Life & Lower Cost: In actual field conditions, Cr12MoV blades last 2–5 times longer than 9CrSi blades. Each blade features 4 indexable cutting edges, greatly reducing replacement frequency and unplanned machine downtime.
Field Technical Verification: We have tracked real blade consumption data from multiple large rebar processing yards. Although Cr12MoV has a higher upfront cost than 9CrSi, it cuts overall rebar shearing costs by 30%–50% per ton. The major savings come from fewer blade changes and much less production downtime. — Lead Technical Engineer, ALAS
2. What Are the Key Performance Specifications of ALAS Cr12MoV Rebar Blades?
| Performance Dimension | Specification | Technical Remarks |
| Material Grade | Cr12MoV(GB) / D2(ASTM) / 1.2601(DIN) / SKD11(JIS) | High-carbon high-chromium cold-work tool steel |
| Heat Treatment | Vacuum Quenching (980–1050°C) + Multi-Stage Tempering | Eliminates internal stress and prevents edge chipping |
| Surface Hardness | HRC 58–62 (Typical: 60HRC) | Rockwell C hardness standard |
| Bending Strength | ≥2500 MPa | Resists deformation and bending under heavy loads |
| Impact Toughness | ≥20 J/cm² (Unnotched) | Balanced toughness to avoid brittle fracture |
| Edge Precision | Precision Ground, Ra ≤ 0.8μm | Delivers clean, square, burr-free cuts |
| Indexable Edges | 4 usable cutting edges per standard square blade | Simply rotate for a fresh sharp edge |
| Single-Edge Lifespan | ≥100,000 cuts (HRB400 Φ25mm rebar) | Slight fluctuation according to actual field conditions |
| Total Blade Lifespan | ≥400,000 cuts (4 edges total) | Greatly reduces tool replacement frequency |
| Installation Accuracy | CNC Machined, bolt hole tolerance ≤±0.02mm | Perfect machine fit, eliminates gap impact damage |
3. Material Comparison: 9CrSi / Cr12MoV / H13
To help you select the most cost-effective blade material for your actual working conditions, below is a practical performance comparison between the three most commonly used rebar blade grades: 9CrSi, Cr12MoV and H13.
| Performance Dimension | 9CrSi Alloy Tool Steel | Cr12MoV Cold-Work Die Steel | H13 Hot-Work Die Steel |
| International Equivalent | — | D2, SKD11, 1.2601 | H13, SKD61, 1.2344 |
| Hardness (HRC) | 58–60 | 58–62 | 50–55 (Up to 56 for optimized cold shear) |
| Wear Resistance | Good | Excellent (High-hard carbides) | Moderate (Excellent high-temperature retention) |
| Impact Toughness | Moderate | Good (Ideal for standard rebar processing) | Extremely High (Anti-shock structure) |
| Thermal Stability | Low (Hardness drops above 200°C) | Moderate (Stable below 400°C) | High (Maintains hardness up to 600°C) |
| Typical Application | Light-duty carbon steel, small batches, low-budget projects | HRB400/500 high-strength rebar, high-volume continuous shearing | Extra-large diameter (>32mm) rebar, scrap metal, hot-rolling shearing |
| Relative Lifespan | 1× (Baseline) | 2–5× | 3–4× (Only under optimized impact conditions) |
| Tooling Cost | Low | Medium | High |
| ALAS Recommendation | ★★☆ | ★★★★★ | ★★★☆ (Site-specific) |
Key Takeaway: For over 90% of standard high-strength rebar processing sites, Cr12MoV offers the best lifespan-to-cost ratio and delivers the highest ROI. H13 is only recommended for extreme working conditions with continuous heavy impact or high-temperature hot-rolled material cutting.
4. How to Select the Right ALAS Blade Material for Your Operation?
Our material selection follows simple, field-proven logic: Working Conditions → Material Grade → Hardness Setup. Cr12MoV covers more than 80% of standard industrial rebar shearing applications worldwide.
Scenario A: HRB335/HRB400 Rebar (Φ16–32mm), Daily Output >50 Tons
Recommended Material: Cr12MoV (Primary Choice)
Why Choose Cr12MoV: The 4-edge reusable design delivers 2–5 times longer service life than standard blades, effectively lowering your per-ton processing cost in high-volume production.
Scenario B: HRB500/HRB500E High-Rib Rebar (Φ25–40mm)
Recommended Material: Cr12MoV (Preferred Choice)
Why Choose Cr12MoV: High hardness resists strong abrasive wear from high-rib HRB500 series rebar, while balanced toughness handles daily mechanical impact and prevents edge chipping.
Scenario C: Hot-Rolled Steel (>300°C) or Ultra-Thick Rebar (>40mm)
Recommended Material: ALAS H13 Hot-Work Blades (Mandatory)
Why Choose H13: Only H13 hot-work steel provides reliable thermal stability and anti-shatter performance to handle high-temperature rolled bars and super-thick rebar cutting.
Scenario D: Limited Budget, Low Production, Low-Strength Steel
Recommended Material: 9CrSi
Why Choose 9CrSi: Lower initial purchase cost for small-batch and low-strength steel processing. Not ideal for long-term mass production, as frequent replacements raise overall operational costs.
Scenario E: Maximize Machine Uptime & Eliminate Downtime
Recommended Material: Cr12MoV (Highly Recommended)
Why Choose Cr12MoV: It significantly extends blade replacement and maintenance cycles, reducing unplanned downtime and keeping your shearing line running at maximum efficiency during peak production.
ALAS provides both standard-sized stock and premium OEM/ODM custom manufacturing. We can provide a 1:1 precise dimensional match for your Cr12MoV blades based directly on your machinery model or engineering drawings.
5. Standard Dimensions, Machine Compatibility & Customization
ALAS offers a full lineup of standard, special-shaped, and portable rebar shear blades with verified global machine compatibility, eliminating buyers’ model mismatch risks. All in-stock blades adopt ±0.02mm CNC precision machining for perfect mounting. Low-MOQ OEM/ODM customization is available (minimum 2 pieces) per customer drawings and technical requirements.
5.1 Standard Square Blades (4 Indexable Cutting Edges)
| No. | Product Name | Dimensions (L×W×T mm) | Available Materials | Technical Remarks |
| 1 | Rebar Cutting Blade | 78×78×17 | Cr12MoV / H13 / 9CrSi | Standard square blade, 4 usable edges |
| 2 | Rebar Cutting Blade | 80×80×17 | Cr12MoV / H13 / 9CrSi | Standard square blade, 4 usable edges |
| 3 | Rebar Cutting Blade | 80×80×30 | Cr12MoV / H13 / 9CrSi | Thickened type for large-diameter rebar |
| 4 | Rebar Cutting Blade | 83×83×16 | Cr12MoV / H13 / 9CrSi | Standard square blade, 4 usable edges |
| 5 | Rebar Cutting Blade | 83×83×26 | Cr12MoV / H13 / 9CrSi | Thickened type for large-diameter rebar |
| 6 | Rebar Cutting Blade | 90×90×20 | Cr12MoV / H13 / 9CrSi | Thickened type for heavy-duty cutting |
| 7 | Rebar Cutting Blade | 90×90×26 | Cr12MoV / H13 / 9CrSi | Thickened type for heavy-duty cutting |
| 8 | Rebar Cutting Blade | 100×100×20 | Cr12MoV / H13 / 9CrSi | Thickened heavy-duty model |
| 9 | Rebar Cutting Blade | 100×100×30 | Cr12MoV / H13 / 9CrSi | Ultra-thick type for super large rebar |
| 10 | Rebar Cutting Blade | 110×110×20 | Cr12MoV / H13 / 9CrSi | Large-size heavy-duty blade |
5.2 Special-Shaped Custom Blades
| No. | Product Name | Dimensions (L×W×T mm) | Available Materials | Technical Remarks |
| 11 | Special-shaped Blade | 100×30×75 | Cr12MoV / H13 / 9CrSi | Custom non-standard size |
| 12 | Special-shaped Blade | 85×65×30 | Cr12MoV / H13 / 9CrSi | Custom machine matching size |
5.3 Portable Handheld Cutter Blades
| No. | Product Name | Dimensions (L×W×T mm) | Material | Remarks |
| 13 | Handheld Cutter Blade | 26×20×10 | Cr12MoV | For portable electric cutters |
| 14 | Handheld Cutter Blade | 30×24×11 | Cr12MoV | For portable electric cutters |
| 15 | Handheld Cutter Blade | 36×28×14 | Cr12MoV | For portable electric cutters |
| 16 | Handheld Cutter Blade | 40×30×15 | Cr12MoV | For portable electric cutters |
5.4 Verified Global Machine Compatibility Whitelist
To eliminate model mismatch risks and accommodate global buyers’ search habits, we have verified blade fitment with mainstream international rebar cutter brands. Buyers can confirm compatibility by their machine model instead of manual measurement, while covering long-tail SEO keywords for global search:
5.4.1 Standard Square Blade Fitment
78×78×17mm / 80×80×17mm / 83×83×16mm: Compatible with GQ40 series cutters and mainstream portable mechanical rebar shears for light & medium-duty construction jobs.
80×80×30mm / 83×83×26mm / 90×90×20mm / 90×90×26mm: Thickened high-load design, perfectly suited for GQ50, EVANG, PEDDINGHAUS, GÖÇMAKSAN (GMS) full-series hydraulic rebar shearing systems for continuous industrial production.
100×100×20mm / 100×100×30mm / 110×110×20mm: Designed for heavy-duty automated cutting lines, rebar mesh welding lines and high-output precast concrete plants for super-thick rebar high-frequency shearing.
5.4.2 Portable Blade Fitment
26×20×10mm / 30×24×11mm / 36×28×14mm / 40×30×15mm: Exact fit for all mainstream portable hydraulic, electric and cordless handheld rebar cutters, ideal for on-site mobile construction and small-batch processing.
5.4.3 Custom Blade Compatibility
All non-standard special-shaped blades support exclusive OEM/ODM customization. We produce fully matched blades according to customer equipment drawings, hole positions and special machine models, covering all non-universal industrial rebar cutting equipment.
To fit global buyers’ search habits and avoid manual measurement errors, we match all blade sizes with mainstream international rebar cutter brands and models below, covering most global construction shear equipment and supporting long-tail SEO search:
5.4.1 Standard Square Blade Fitment
78×78×17mm / 80×80×17mm / 83×83×16mm: Compatible with GQ40 series cutters and mainstream portable mechanical rebar shears for light & medium-duty construction jobs.
80×80×30mm / 83×83×26mm / 90×90×20mm / 90×90×26mm: Thickened high-load design, perfectly suited for GQ50, EVANG, PEDDINGHAUS, GÖÇMAKSAN (GMS) full-series hydraulic rebar shearing systems for continuous industrial production.
100×100×20mm / 100×100×30mm / 110×110×20mm: Designed for heavy-duty automated cutting lines, rebar mesh welding lines and high-output precast concrete plants for super-thick rebar high-frequency shearing.
5.4.2 Portable Blade Fitment
26×20×10mm / 30×24×11mm / 36×28×14mm / 40×30×15mm: Exact fit for all mainstream portable hydraulic, electric and cordless handheld rebar cutters, ideal for on-site mobile construction and small-batch processing.
5.4.3 Custom Blade Compatibility
All non-standard special-shaped blades support exclusive customization. We manufacture fully matched blades according to customer equipment drawings, hole positions and special machine models, covering all non-universal industrial rebar cutting equipment.
6. Why Do Cr12MoV Blades Occasionally Chip and How to Prevent It?
Edge chipping is the most common issue in daily blade operation. According to long-term field data statistics, more than 90% of chipping problems are caused by incorrect operation and installation, not material defects. Standardized usage can effectively keep chipping rate below 0.5%.
| Root Cause | Field Manifestation | ALAS Preventive Solution |
| Improper Blade Clearance | Gap over 0.5mm or below 0.1mm causes severe stress concentration on blade edge | Set clearance to 10% of rebar diameter, keep standard gap between 0.2–0.5mm |
| Loose Mounting Bolts | Micro vibration and blade displacement lead to local edge fracture under heavy load | Check and fasten all bolts daily before operation, follow machine manual torque standard |
| Over-Capacity Shearing | Cutting rebar over 1.2 times blade thickness exceeds material bearing limit | Use multi-stage cutting or replace with H13 heavy-duty blades for oversized rebar |
| Rebar Impurities & Hard Spots | Weld joints, slag and hard inclusions cause instant impact overload and edge breakage | Pre-inspect raw materials or upgrade to shock-resistant H13 blades |
| Unrelieved Heat-Treat Stress | Low-quality blades with internal residual stress develop micro cracks during continuous cutting | ALAS blades adopt vacuum quenching + multi-stage deep tempering to eliminate internal stress completely |
7. What Is the Total Cost of Ownership (TCO) for ALAS Cr12MoV Blades?
Based on actual field data of a standard rebar processing plant: daily output 100 tons HRB400 Φ25mm rebar, factory downtime loss of $150 per hour. The following comparison clearly shows the cost advantage of Cr12MoV blades over traditional 9CrSi blades.
| Financial & Operational Metrics | 9CrSi Standard Blades | ALAS Cr12MoV Blades | Business Impact |
| Unit Purchase Price | $18.00 | $42.00 | Higher initial investment |
| Single-Edge Lifespan | 30,000 cuts | 100,000 cuts | 3× longer single-edge service life |
| Total 4-Edge Lifespan | 120,000 cuts | 400,000 cuts | Greatly extended tool cycle |
| Cost per 1,000 Cuts | $0.150 | $0.105 | 30% lower direct tooling cost |
| Annual Blade Consumption | 20.8 pcs | 6.25 pcs | Less procurement & inventory pressure |
| Annual Procurement Cost | $374.40 | $262.50 | Direct cost savings on consumables |
| Annual Downtime Hours | ~40 hours | ~12 hours | 70% downtime reduction |
| Downtime Labor Loss | $6,000.00 | $1,800.00 | Avoid massive idle labor & machine loss |
| Total Annual TCO | $6,374.40 | $2,062.50 | 65% total cost saved per machine |
ROI Conclusion: Although Cr12MoV blades require higher upfront investment, they reduce overall operating costs by more than 60%. The extra cost is fully recovered within 60 days through reduced downtime and replacement frequency.
8. Daily Maintenance Guide for Maximum Blade Lifespan
Correct daily maintenance can maximize blade performance and multiply service life. All operations follow on-site construction standards:
Regular Edge Rotation: Rotate the blade immediately when burrs, uneven cutting or increased shearing resistance appears. Make full use of 4 indexable edges to achieve 4 times the total service life.
Daily Bolt Inspection: Check and retighten all mounting bolts before daily startup. Loose bolts cause micro vibration and are the main cause of edge chipping.
Clearance Calibration: Readjust blade clearance every time you change rebar specifications. Maintain a 0.2–0.5mm gap to reduce friction and premature wear.
Seat Surface Cleaning: Clean iron filings, scale and grit on the blade seat during every replacement or rotation, ensuring flat mounting and uniform force bearing.
Mechanical Lubrication: Keep machine guide rails and moving parts well lubricated to reduce frictional heat, avoiding thermal softening of blade edges.
9. Packaging, Logistics & FAQ
9.1 Export-Grade Packaging & Shipping
All ALAS blades adopt standard export packaging to ensure zero damage during long-distance sea and air transportation:
Anti-Rust Treatment: Each blade is coated with high-performance industrial anti-rust oil for long-term storage and marine transportation.
Vacuum Sealing: Single blade vacuum packed with thick waterproof film to isolate moisture and oxidation.
Impact-Proof Packing: Packed in padded ISPM-15 standard plywood cases to prevent extrusion and collision deformation.
Lead Time: Standard in-stock sizes ship within 48 hours. Custom OEM/ODM orders take 10–15 working days for precision processing.
9.2 Frequently Asked Questions
Q1: What is the difference between ALAS Cr12MoV and ordinary D2 blades?
A1: Cr12MoV is equivalent to D2 in chemical composition, but ALAS adopts strict vacuum heat treatment and grain refinement process. Uniform carbide distribution improves overall wear resistance and stability, obviously better than ordinary commercial D2 blades.
Q2: Can Cr12MoV blades cut HRB500 / Grade 60 high-strength rebar?
A2: Yes. With stable HRC 60 hardness, our blades fully adapt to HRB500 high-tensile rebar. With correct clearance and firm installation, single edge can reach 20,000 to 60,000 cuts depending on the rebar diameter.
Q3: Is blade chipping caused by material quality problems?
A3: Almost not. All ALAS blades pass ultrasonic flaw detection and full hardness inspection before delivery. 90% of on-site chipping is caused by loose bolts, incorrect clearance or over-load cutting. We provide free remote calibration support.
Q4: Can Cr12MoV cut hot-rolled rebar directly?
A4: It is safe for rebar below 300°C with slight lifespan reduction. For materials over 400°C, H13 hot-work blades are mandatory to avoid rapid wear and edge fracture.
Q5: When to rotate the blade edge?
A5: Replace the working edge once obvious rebar burrs, skewed cutting surface or sudden hydraulic pressure increase occurs, which indicates edge dulling.
Q6: Is Cr12MoV worth the extra cost compared with 9CrSi?
A6: Absolutely. For regular-scale rebar processing plants, Cr12MoV reduces comprehensive operating costs by 65% annually. The investment can be fully recovered within 2 months.
Q7: Do you support sample testing?
A7: Yes. We provide paid sample evaluation service. If the sample meets the promised lifespan standard on your site, the sample fee will be fully deducted from your bulk order payment.
