JSTMT is a trusted China metal shear blades manufacturer since 1985, specializing in precision replacement knives and custom blades for hydraulic guillotine and swing beam shearing machines. Engineered from certified SKD11 (AISI D2), 6CrW2Si, H13, 9CrSi, and Cr12MoV tool steels, every blade undergoes controlled-atmosphere furnace or vacuum heat treatment (HRC 52–62) and CNC precision grinding within ±0.01mm parallelism tolerance for 100% compatibility with Durma, Amada, LVD, Trumpf, Accurpress, and Cincinnati shears.

Standard configurations include 2-edge blades for swing beam shears and 4-edge blades for guillotine shears across mild steel, stainless steel, and aluminum plate cutting. Alongside sheet metal shear knives, JSTMT also manufactures custom blades for hydraulic ironworkers and rotary slitters to customer drawings.

👉 Ready for a quick quote? Send us your machine details or drawing, and our engineering team will respond within 2 hours.

▶ Watch: JSTMT Precision Shear Blade Production & Cutting Test

PRODUCTS CORE  SOLUTIONS

Industrial Shear Blade Applications

JSTMT replacement shear blades are precision-engineered to meet demanding cutting requirements across diverse metalworking sectors. By matching blade geometry, clearance, and tool steel grades (9CrSi, 6CrW2Si, D2/SKD11, H13, and Cr12MoV) to your specific plate thickness and tensile strength, we deliver burr-free cuts and extended edge life.

Sheet & Plate Blanking (Mild & Carbon Steel)

Precision shearing of structural carbon plates and mild steel blanks using 9CrSi or Cr12MoV blades.

  • Structural steel fabrication
  • Heavy machinery base plates
  • General job shop blanking

Stainless Steel & Non-Ferrous Cutting

High-wear-resistance shearing of 304/316 stainless steel, aluminum, and copper sheets using D2 / SKD11 blades.

  • Electrical enclosures & cabinets
  • Elevator panels & architectural trim
  • HVAC ducting & kitchen equipment

Heavy-Duty Plate & High-Impact Shearing

Shock-resistant cutting of thick alloy plates and structural steel blanks using 6CrW2Si or H13 blades.

  • Shipbuilding & marine plates
  • Heavy construction & mining machinery
  •  Automotive chassis & structural frames

🔧 Machine Compatibility & Precision Customization

Blade selection depends on the material being cut, its thickness and strength, the required cutting quality, and the shearing machine design. JSTMT supplies standard and fully customized replacement shear blades compatible with major shearing machine brands:

Compatible Shearing Machine Brands:

Durma
Amada
LVD
Trumpf
Accurpress
Cincinnati
Custom / Homemade Shears

👉 How to Request the Right Replacement Blade?

Please provide: 1 machine brand and model, 2 blade dimensions(length × width × thickness), 3 material grade (SKD11/H13/D2), 4 typical cutting thickness, Our engineering team will match the exact specifications and recommend the optimal material and edge design

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Shear Blade Material & Hardness Selection Guide

Selecting the right tool steel grade and heat-treatment hardness prevents edge chipping and maximizes cutting life across different sheet thicknesses:

Tool Steel Grade Hardness (HRC) Recommended Plate Thickness & Material Core Performance Advantage
SKD11 / AISI D2 HRC 58–62 0.5mm – 8mm Stainless Steel & High-Tensile Sheet Ultra-high wear resistance and edge retention for high-volume precision shearing.
6CrW2Si HRC 54–58 6mm – 16mm Medium-to-Thick Carbon & Alloy Plates Balanced toughness and hardness; resists edge chipping under heavy impact loads.
H13 (4Cr5MoSiV1) HRC 52–56 12mm – 25mm+ Heavy Plate & Hot Shearing Superior shock resistance and thermal stability for heavy-duty plate shears.
9CrSi / Cr12MoV HRC 56–60 1mm – 6mm Mild Steel, Aluminum & Copper Cost-effective general-purpose tool steel for standard workshop blanking.

Features & Benefits of Our Replacement Shear Blades

Feature Benefit
Wear-Resistant Tool Steels SKD11, 6CrW2Si, H13, D2, 9CrSi, and Cr12MoV options matched to cutting conditions.
Precision Grinding Controlled parallelism (≤ ±0.01 mm) for consistent cut quality across the full length.
Furnace & Vacuum Heat Treatment Controlled-atmosphere furnace heat treatment for standard runs and vacuum heat treatment for high-alloy steels (HRC 52–62), ensuring uniform hardness and zero decarburization.
Multiple Cutting Edges 2-side edge design for swing-beam shears · 4-side edge design for guillotine shears.
Custom Solutions Exact dimensions, hole patterns, and edge configurations available.

Why Choose JSTMT for Industrial Metal Shear Blades?

JSTMT has been in the Sheet Metal Fabrication Industry since 1985, with mechanical processing equipment: Multi-task Machine centers, Boring & Milling machines, and lathes facilities, our company delivers high-quality and reliable small press brake, hydraulic shears, and shear steel knife.

  • OEM & Universal Compatibility: Precision-engineered replacement blades fully compatible with major global brand shearers, including Durma, Amada, LVD, Trumpf, Accurpress, and Cincinnati.
  • Engineering & Metallurgy Customization: Our engineering team optimizes blade geometry, edge profiles, and heat-treatment hardness (HRC) tailored to your specific sheet material, plate thickness, and cutting volume.
  • Strict Quality & Tolerance Control: Every blade undergoes precision grinding and vacuum heat treatment, achieving strict parallelism tolerances ( <±0.01mm) and 100% heat-number material traceability.
  • Direct Industrial Shear Blade Manufacturer : As a primary OEM manufacturer, we offer full technical support, transparent lead times, and global export compliance across 50+ countries.

Contact our engineering team today for a custom quote on high-quality plate shear blades!

Send A Quote

What is industrial shear blade sharpening and material?

Sharpen or replace your shear knives for maximum wear resistance and impact strength. when hydraulic metal stomp shears blade sharpening is tough, it can be surface ground to the same precision tolerances to maintain a high level of productivity and ensure the finest cut quality.

The shear knife blades are made of special steel alloy, with full heat treated through the toughest conditions. The plate shear blade material can be SKD11, D2, or 6CrW2Si. Our blades are available in two-edge, and four cutting edges. We have manufactured blades for many shear brands: Accurpress, Amada, Trumpf, and LVD. We offer complete designs for unique, obsolete, as well as custom designs for homemade shears. we offer ironworker shear blades and replacement shear blades.

How Metal Shear Blades Work?

Metal shear blades operate by applying high shear force between a top moving blade and a fixed lower blade set at a relative angle. As the upper blade moves past the lower blade set (mounted on the blade holder) , the sheet metal material separates along the cutting line.

Three critical factors determine cutting performance:

  • Blade Clearance: The gap between the upper and lower blades must be appropriate for the material type and cutting thickness. Incorrect clearance can increase burrs, distortion, and blade wear.
  • Blade Angle(rake angle): Influences cutting force and material deformation. The optimal angle depends on machine design and cutting application.
  • Blade Condition and Material:Sharp edges, correct alignment and the right tool steel grade ensure consistent cut quality and longer service life.

For best results, always confirm the shearing machine type, blade dimensions, material being cut and required thickness before selecting a metal shear replacement blades.

Technical Resources & Troubleshooting Guides

To ensure the longest lifespan for your shear blades, correct setup and material selection are critical. Browse our technical library below to optimize your shearing production:

FAQ- Frequently asked questions

The replacement shear blade is a cutting blade for the metal shear machine.  It is composed of a top moving blade and a lower blade. The material is made of high chrome or high carbon steel for extended blade life. It works by clamping the material with the upper blade and the lower blades with a fixed cutting angle.

The shearing cutting blades are used for cutting steel plates into different strips with exacting tolerances. It is an important spare parts in the shearing machine. The shear knives include a top blade and bottom blade, and can be used for cutting different materials such as mild steel, stainless steel, and aluminum.

JSTMT manufactures high-performance shear blades utilizing premium SKD11, 6CrW2Si, and H13 tool steels with precise parallelism and vacuum heat treatment for optimal cutting performance.

What materials are often used for the blades of the shears

Shearing( die cutting) is a process that cuts stock without the formation of metal chips. If the cutting blades are straight the process is called shearing; if the cutting blades are curved then they are shearing-type operations.

The Hydraulic metal cutting shear is a kind of machine that uses the moving upper blade and fixed lower blade to apply shear force to metal plates of various thicknesses by using reasonable blade clearance, to break and separate the plates according to the required size.

The replacement shear blades are available in two-edge for swing beam shear and four-edge for guillotine shear. and the material of the shearing machine blade parts is hardened to ensure consistent hardness; The hardening and tempering furnace can handle shear blades up to 16 feet in length.

  1. Two side edge shear knife. It is used for swing beam shear with two sides flat and two sides inclinable edge. The movement route is a circular line.
  2. Four side edge shear knife. It is used for a guillotine shear. The movement route is a straight line.
    SwingBeam Shear blade design
    Swing Beam Shear blade design
Guillotine-shear blade design
Guillotine-shear blade design

 

 

 

Catalogue

JSTMT catalogue

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