Nanjing Alas metal shear blades are premium industrial-grade guillotine cutting tools engineered for high-cycle sheet metal shearing operations. Precision-manufactured in our ISO 9001:2015 certified facility from elite tool steels—including 9CrSi, Cr12MoV, H13, and D2—our metal shear blades deliver a perfectly uniform hardness of HRC 50–62 and grinding tolerances strictly controlled within ±0.02 mm. They are explicitly developed to eliminate recurring shop-floor headaches like severe burr formation, premature edge chipping, and hydraulic stress—issues that typically force unplanned downtime and blade rotation every 2 to 6 months. As trusted heavy-duty metal shear blade manufacturers, we help steel service centers and metal fabricators protect machine bearings and minimize total operational expenditure.
Advanced Manufacturing Processes Ensuring Shear Blade Precision & Longevity
All Nanjing Alas metal shear blades undergo a dual-stage stabilization process to guarantee exceptional dimensional repeatability and prolonged edge life: proprietary computer-controlled vacuum heat treatment and ultra-precision cross-grinding. Our vacuum quenching eliminates thermal soft spots and structural micro-voids, maintaining absolute straightness even for customized, single-section metal shear blades up to 4 meters in length. Following thermal processing, every blade edge is CNC-ground to a flawless finish. This optimal edge geometry drastically reduces shearing friction,
slashes machine amperage draw, and ensures clean, burr-free separations across carbon steel, stainless steel, and non-ferrous plates. For maximum ROI, our standard profiles feature dual-edge or four-edge reversible configurations, doubling or quadrupling your working cycles before re-sharpening is required.
Premium Steel Grades Formulated for Diverse Shearing Conditions
We select and configure metal shear blade materials strictly based on actual working conditions, including workpiece material, plate thickness, shearing temperature, and daily production load. Each steel grade is professionally matched to specific cutting scenarios, ensuring balanced hardness, toughness, and wear resistance for metal shear blades, avoiding common problems like edge chipping, rapid dulling, and material sticking. Below are our mainstream high-performance blade materials and their targeted applications:
9CrSi (1.2108): HRC 58–60, cost-effective general-purpose steel, ideal for shearing thin galvanized steel, aluminum, copper, plastic, leather, and cold-rolled sheets under 6mm
6CrW2Si (1.2555): HRC 60–62, tungsten-silicon alloyed steel with excellent heat and wear resistance, suitable for hot shearing, light stainless steel, and medium-strength steel processing
Cr12MoV / SKD11 (1.2601): HRC 58–60, high-wear-resistance steel with excellent anti-galling properties and stable hardening performance. Specially optimized to resist material adhesion and edge buildup caused by stainless steel’s high surface viscosity, it remains sharp and burr-free during continuous stainless steel and full-range Q235 carbon steel shearing, avoiding frequent blade dulling.
D2 / Cr12Mo1V1 (1.2379): HRC 58–62, anti-deformation and anti-chipping properties, applicable for medium-low hardness alloy steel, aluminum, brass, rubber, and composite materials
H13 / 4Cr5MoSiV1 (1.2344): HRC 50–55, features outstanding high-temperature fatigue resistance and thermal stability. It effectively withstands continuous high-heat working conditions generated by hot-rolled plates and hot strip shearing, preventing edge softening and thermal wear under long-term high-temperature friction, ideal for thick stainless steel and hot processing scenarios.
LD (7Cr7Mo2V2Si): HRC 58–62, ultra-high toughness structural tool steel designed specifically for heavy-shock localized impact working conditions. It resists instantaneous cracking and edge chipping under the high tensile strength of thick high-strength steel plates, outperforming ordinary tool steels in heavy-duty shearing and long-cycle high-load production.
Powder Metallurgy Steel (ASP23/ASP60): HRC 62–65+, ultra-high hardness and extreme wear resistance, used for high-precision and heavy-duty long-cycle shearing scenarios
If you have special working conditions or customized material requirements, contact our engineering team for a free 24-hour professional solution and custom metal shear blade design.
International Tool Steel Grade Cross-Reference Table
To facilitate global customer procurement and material replacement, we have supplemented equivalent international grades for all domestic tool steels used for metal shear blades, eliminating blank parameter gaps and supporting global standard matching. All data covers mainstream American ASTM, Japanese JIS, German DIN, French NF and Russian GOST international standards, helping customers quickly select compatible metal shear blades for their equipment and working conditions.
Multi-Language Service Support (hreflang Localization): We provide localized page versions for English (en), German (de), French (fr), and Russian (ru) markets, adapting to regional steel standard search habits and helping global buyers quickly obtain accurate parameter matching and customized solutions.
Global Tool Steel Grade Cross-Reference Table
| Chinese GB Grade | ASTM (USA) | JIS (Japan) | DIN (Germany) | W-Nr | NF (France) | GOST (Russia) | BS (UK) | Application |
| 9CrSi | Equivalent O1/A2 | Equivalent SKS3 | 90CrSi5 | 1.2108 | — | 9XC | — | Thin plate general shearing blades |
| 6CrW2Si | Equivalent L6 | Equivalent SKS41 | 60WCrV7 | 1.2555 | 55WC20 | 6XB2C | — | Hot shearing & medium-strength steel blades |
| Cr12MoV | — | SKD11 | X165CrMoV12 | 1.2601 | — | X12M | — | Stainless steel dedicated shearing blades |
| Cr12Mo1V1 (D2) | D2 | Equivalent SKD12 | X155Cr12Mo12 | 1.2379 | X160CrMoV12 | — | BD | High wear-resistant precision shearing blades |
| 4Cr5MoSiV1 (H13) | H13 | SKD61 | X40CrMoV5-1 | 1.2344 | X40CrMoV5 | 4X5MØ1C | BH13 | High-temperature resistant hot working blades |
| LD (7Cr7Mo2V2Si) | Equivalent A8 | Equivalent SKD2 | — | — | — | — | — | Heavy-duty high-strength plate shearing blades |
| W18Cr4V | T1 | SKH2 | S18-0-1 | 1.3355 | HS18-0-1 | P18 | BT1 | High-speed steel customized cutting blades |
| W6Mo5Cr4V2 | M2 | SKH9 | S6-5-2 | 1.3343 | — | P6M5 | BM2 | High-wear customized cutting blades |
| 45# | 1045 | S45C | C45E | 1.1191 | C45E | 45 | C40E | Common carbon steel workpiece matching |
| 42CrMo | 4140 | SCM440 | 42CrMo4 | 1.7225 | 42CD4 | — | 708M40 | Alloy structural steel workpiece matching |
We support custom material formula and international grade matching services, and can manufacture tailored industrial shear tooling strictly according to customer drawings and global standard requirements.
Standard Dimensions & Customization Capabilities of Metal Shear Blades
We provide a full range of standard-size guillotine knives compatible with mainstream hydraulic guillotine shears and manual shearing equipment, with full non-standard customization support for personalized industrial production needs. All tooling supports custom length, width, thickness, mounting hole layouts, T-slot structures, and dual-edge/four-edge reversible cutting configurations. (Inch conversion available for all millimeter specifications to serve North American buyers)
Our in-stock standard tooling covers light, medium, and heavy-duty shearing scenarios, achieving direct OEM replacement for most industrial shearing machines without on-site modification. All dimensional data complies with universal industrial standards:
Light-Duty Small Sizes (Manual & Mini Shears)
170×30×10mm, 205×30×10mm, 350×30×10mm
Medium Standard Sizes (General Sheet Metal Fabrication)
508×70×22mm, 508×80×25mm, 1025×63×16mm, 1025×80×20mm, 1025×100×25mm, 1100×64×16mm, 1100×80×20mm, 1100×100×25mm
Heavy-Duty Large Sizes (Thick Plate & Industrial Shearing)
1300×63×16mm, 1300×63×18mm, 1300×80×20mm, 1300×80×25mm, 2030×80×25mm, 3200×100×30mm
We support custom fabrication with a 1-piece minimum order, while standard tooling is available for fast 3-day shipping. Manufactured from premium 55CrSi, 9CrSi, 6CrW2Si, Cr12MoV, and H13 grades, our products adapt to diverse cutting loads. Backed by a 500,000-piece annual output and 50 tons of raw steel inventory, we deliver stable bulk order fulfillment. Send us your drawings now to get a tailored shearing tooling quotation.
Optimized Hardness Matching to Reduce Total Cost of Ownership (TCO)
Most premature failures of industrial shearing tooling stem from unbalanced hardness and toughness configuration. Overly hard tool segments are susceptible to edge chipping and cracking under impact loads, while softer-grade shearing knives lose sharpness rapidly and generate excessive burrs, triggering frequent replacements and elevated operational costs. The Nanjing Alas R&D team specializes in precise hardness-toughness balancing for all custom shear tooling, effectively lowering overall total cost of ownership (TCO) for sheet metal processing workshops.
Scientific material matching eliminates unplanned production downtime caused by tool failure, reduces re-grinding and replacement frequency, and prevents secondary abrasion to shearing machine hydraulic systems and core components. Cost-effective 9CrSi tooling delivers stable performance for routine carbon steel cutting; anti-galling Cr12MoV shearing knives are professionally configured for sticky stainless steel processing; high-toughness H13 and LD industrial blades extend service life from 2–3 months to 5–6 months for heavy-gauge and high-strength plate shearing, maximizing long-term production profitability.
Improper hardness matching is the top cause of short blade lifespan and unstable cutting quality in sheet metal workshops. Our material matching scheme balances abrasion resistance, impact toughness and cost input for each customer’s actual cutting load to minimize overall operational expenditure. — Nanjing Alas R&D Team
Scientific Blade Clearance Calibration for Burr-Free Cutting & Extended Service Life
Blade clearance is the decisive technical parameter that governs cutting finish quality and tool service life, referring to the precise gap between upper and lower shearing knives. Accurate clearance calibration eliminates workshop burr defects and slows down tool abrasion significantly. The standard clearance is set at 5%–10% of the workpiece thickness for ordinary metal sheets, while stainless steel materials require an optimized 8%–10% clearance to avoid edge tearing and uneven cuts.
Insufficient clearance creates excessive frictional heat, leading to micro-chipping and localized edge wear on industrial tooling. Excessive clearance results in jagged cutting surfaces and heavy burrs, requiring time-consuming secondary deburring procedures. Nanjing Alas provides professional clearance adjustment guidelines with every batch of custom shear knives. Daily lubrication and weekly precision calibration can extend tool lifespan by an average of 30%, sustaining consistent, burr-free cutting results for long-term mass production.
OEM-Compatible Replacement Blades for Global Shearing Machinery
Nanjing Alas manufactures fully compatible aftermarket shear machine spare knives and guillotine parts for global industrial equipment, covering mainstream brands and popular series including Amada HFE, Amada RG80, LVD hydraulic guillotine lines, and Accurpress 7-series shearing machines. All custom industrial blades match original mounting dimensions precisely, requiring no field adjustment. We support customized hole spacing, counterbore layouts, T-slot positioning, and reversible dual/four-edge cutting structures for full model compatibility.
We provide professional reverse engineering services based on worn tool samples or customer dimensional sketches. Every finished set of shear knives undergoes strict multi-layer quality inspection before delivery, including spectral composition testing, MPI magnetic particle crack detection, and micron-level dimensional calibration. Certified by ISO 9001 and CE standards, our precision tooling delivers superior stability and wear resistance compared with ordinary OEM parts, helping global manufacturers reduce equipment maintenance costs and spare part replacement frequency. Contact us to confirm tool compatibility with your specific machine model.
(Insert Blade Installation & Machine Matching Image Here) — Image SEO: OEM Compatible Metal Shear Blades Installation, Replacement Shear Knives for Amada LVD Accurpress Shearing Machine
Frequently Asked Questions (FAQ)
1. What is your Minimum Order Quantity (MOQ)? Can I request test samples?
We support a 1-piece minimum order for both standard stock tooling and custom engineered guillotine knives. Small-batch trial samples are offered for workshop performance testing, and sample fees can be fully credited toward subsequent bulk order settlements upon formal contract confirmation.
2. What are your standard production and shipping lead times?
In-stock standard profiles ship within 3 working days. Custom-sized or special-alloy tooling requires 7–15 working days based on drawing complexity and heat-treatment requirements. With a 500,000-piece annual production capacity, we ensure stable, on-time delivery for high-volume industrial buyers.
3. Do your products come with official Material Test Certificates (MTC)?
Absolutely. Every batch of our industrial tooling comes with complete, traceable Material Test Certificates (MTC), including chemical composition analysis, HRC hardness verification, and CNC dimensional inspection reports. These official documents support global customs clearance and strict industrial quality traceability standards.
4. What is the quality guarantee and replacement policy?
We stand firmly behind our industrial tooling with a 12-month manufacturer warranty covering all factory defects under standard operating conditions. If premature cracking, micro-chipping, or abnormal wear occurs due to material or machining errors, we provide free re-production and expedited DHL/FedEx air-freight replacement at our expense, eliminating long ocean shipping delays and extra logistics costs. Warranty excludes damage caused by incorrect clearance settings, machine overload, or improper manual operation.
5. What routine maintenance practices optimize blade service life?
Maximize the service life of your guillotine knives with our data-driven three-tier maintenance routine. Perform daily lubrication and visual edge inspections before startup, and conduct weekly precision clearance micro-calibrations to sustain cutting accuracy. Re-sharpen edges immediately once burr height exceeds 10% of the processed plate thickness, adapting to light, medium, and heavy production loads. Store spare industrial blades in a dry, temperature-controlled environment with protective edge covers to prevent rust, deformation, and impact damage.
Conclusion: Engineering Profitability into Every Cut
High-performance metal shear blades are the fundamental anchor of consistent, high-precision sheet metal processing. Substandard raw tool steels, volatile heat-treatment cycles, and loose grinding tolerances are the root causes of jagged edge burrs, rapid blade failure, and catastrophic, unplanned factory downtime that erodes your production profits.
Nanjing Alas industrial-grade metal shear blades bridge the gap between premium durability and cost-efficiency. Through rigorous computer-controlled vacuum heat treatment and strict ±0.02mm precision grinding, we engineer solutions that balance extreme wear resistance with optimal impact toughness, successfully driving down your shop-floor's total cost of ownership (TCO).
Whether your upcoming project demands standard replacement stock or highly specialized, custom-tailored geometries built from international equivalent steel grades, our R&D engineering team is standing by to deliver targeted solutions within 24 hours.
Quick Inquiry Form (Instant Quote Request)
Blade Specifications: Length / Width / Thickness
Processing Material: Carbon Steel / Stainless Steel / High-Strength Steel / Others
Working Thickness Range: ____ mm
Attachment: Upload PDF/DWG/STEP Drawing Files
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Fill in the simple information above and submit your project requirements. Our professional engineering team will deliver a targeted quotation and customized technical solution within 24 hours, including free drawing optimization and parameter matching services.
