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Metal Shear Blades FAQ

Q1: What are the best materials for metal shear blades?

A1: 9CrSi features good impact toughness for common mild steel cutting. D2, Cr12MoV and SKD-11 own strong wear resistance, perfect for cold cutting carbon steel, stainless steel and medium-thin plates. H13 delivers excellent heat resistance and toughness, fit for hot shearing and heavy thick plate cutting.

Q2: How to select proper shear blades for actual cutting work?

A2: Confirm cutting materials first. Choose 9CrSi or D2 for mild steel, D2 or Cr12MoV for stainless and alloy steel, H13 for hot rolled metal and thick plates. Pick high toughness blades for thick sheets to avoid chipping. Use wear resistant blades for long continuous cutting, and cost-effective 9CrSi for intermittent work. Match blade size and hole position with your shear machine.

Q3: Which blade material suits different metal types?

A3: Use 9CrSi and D2 for mild steel and carbon steel. D2, Cr12MoV and high speed steel work well on stainless steel and alloy steel. H13 is ideal for hot rolled metal and thick heavy plates with reliable anti-chipping performance.

Q4: What is the ideal hardness of shear blades?

A4: The standard hardness ranges from HRC 58 to 62. Over hard blades tend to chip easily, while overly soft blades wear quickly and produce cutting burrs.

Q5: How to set reasonable blade clearance?

A5: Basic clearance accounts for 5% to 10% of sheet thickness. Mechanical shears keep around 7% clearance, and hydraulic shears stay between 7% and 15%. Too small clearance causes blade collision and damage. Excessive clearance results in rough cuts and heavy burrs.

Q6: Can a single blade cut various kinds of metal?

A6: It is not recommended. Mixed cutting accelerates blade dulling and uneven wear, greatly shortening service life.

Q7: What leads to heavy burrs on cut surfaces?

A7: Blunt cutting edge, oversized blade clearance and misaligned blade installation are main reasons. Solve the problem by sharpening blades, adjusting clearance and correcting blade position.

Q8: Why do blade edges get chipped or cracked?

A8: Small clearance, mismatched blade material, over-thickness cutting and defective heat treatment will damage blades. Adjust clearance properly, adopt tough blade materials and avoid overload cutting.

Q9: How frequently should we inspect shear blades?

A9: Check blade sharpness and surface damage daily before operation. Examine alignment and clearance every week. Conduct comprehensive maintenance and grinding inspection monthly.

Q10: Is self sharpening of shear blades available?

A10: It can be done with professional grinding machines. Factory precision sharpening is more suggested to ensure flatness and edge accuracy.

Q11: When do we need to replace old shear blades?

A11: Replace blades when obvious cracks and chippings appear, burrs cannot be eliminated after sharpening, or uneven wear brings unstable cutting quality.

Q12: Do you offer customized shear blades?

A12: Yes. We customize blade size, material, hole location, heat treatment and surface coating according to client machine demands.

Q13: How long is the product delivery period?

A13: Standard blades take 7 to 10 working days. Custom blades need 10 to 15 working days.

Q14: What surface coatings can be applied on blades?

A14: TiN, TiCN and DLC coatings are available. They improve wear and corrosion resistance and prolong blade service time.

Q15: What is your product warranty rule?

A15: 3-month warranty applies under normal operation. We provide free replacement for quality defects. Damage from improper use and overload is not within warranty scope.

Q16: What safety rules apply during blade usage?

A16: Stop the machine completely before assembling or removing blades. Tighten fixing bolts with standard torque. Keep hands away from cutting zone while working. Remove metal scraps regularly to protect blades.

How to Choose Metal Shear Blades (No Cracks, Lower Costs)

In metalworking and scrap recycling, your production line’s efficiency depends entirely on your Metal Shear Blades. Low-quality or ill-fitting blades don’t just hurt output—they also damage expensive hydraulic cylinders and drive systems.

Types of Metal Shear Blades

• Hydraulic Shear Blades: These are the main cutting tools for hydraulic shearing machines, with two common styles: swing and Guillotine Shear Blades (gate type). Guillotine Shear Blades move straight up and down, delivering better precision and longer service life—they’re the go-to for medium/thick plates and high-precision cutting. They handle tough, large scrap and need to be strong and wear-resistant.

• Amada Shear Blades& Cincinnati Shear Blades: Made to fit specific machine brands, and built to match OEM standards for consistent, reliable performance.

• D2 Shear Blades,DC53 (D2’s upgrade), and H13 Metal Shear Blades are the best options for heavy-duty, high-demand cutting tasks.

Key Tips for Choosing Metal Shear Blades

• 1. Handle Friction and Shock

• Cutting metal is hard on blades—they face high friction and sudden energy surges. Brittle blades chip easily, while soft ones bend and leave rough edges (burrs).

• We use computerized vacuum furnaces for through-hardening. This keeps blades strong from surface to core, so they can be sharpened many times without losing performance.

• 2. Pick the Right Steel Grade

• D2 Shear Blades (and DC53, its upgrade): This hard steel resists wear and chipping, making it perfect for cold-cutting carbon steel and stainless steel. DC53 is tougher than standard D2, so it performs better in tough jobs.

• H13 Metal Shear Blades (also SKD61 or 4Cr5MoSiV1): Built for high heat, it stays hard and sharp even when hot. It’s great for hot-cutting thick steel or cold-cutting strong alloys. Hardness: HRC 50–55.

• 3. Precision Fit Protects Your Machine

• A sharp, precise blade cuts required force by 30%—that means less wear on your machine.

• All our Metal Shear Blades—Hydraulic, Guillotine, Amada, Cincinnati, D2, DC53, and H13—are ground to ±0.02mm precision, matching OEM standards for a perfect fit.

• Precision avoids uneven wear, keeps blade gaps tight, and delivers clean cuts—no expensive rework needed.

• 4. Heat Treatment Prevents Blade Failure

• Most Metal Shear Blades—D2, DC53, H13 included—break because of internal stress.

• Our heat treatment (multiple heating/cooling cycles, or differential tempering) fixes this. It removes stress and keeps blades stable.

• This means a strong core and cutting edge, flexibility under heavy loads, and longer blade life.