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Custom precision guillotine shear blades for metal plate cutting

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Industrial Shearing Machine Blades

Shearing Machine Blade

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Nanjing, China
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The Ultimate Guide to Selecting Shearing Machine Blades

In metal fabrication, the shearing machine blade is key for clean, smooth cuts (no burrs). A bad blade ruins materials, wears down machines faster, costs more money, and hurts product quality. This guide breaks down the key things to know to pick the right shearing machine blade.

Material Grade: The Foundation of Durability

In metal fabrication, your shearing machine blade’s quality directly affects your finished product’s edge. A dull or poorly made blade causes excess burrs, bent plates, and more wear on your guillotine shear. At Alasmachinery, we offer special alloy steels for different cutting needs.

Shearing Machine Blade Materials & Their Traits

9CrSi Alloy Tool Steel

Traits: High hardness, good wear resistance, medium toughness, balanced performance, low cost, most widely used
Hardness: HRC 58-60 (after heat treatment)
Use for: Thin cold-rolled plate, galvanized plate, aluminum plate, copper plate; also plastic, leather, and other non-metals

6CrW2Si Alloy Tool Steel

Traits: Has tungsten and silicon; stays hard at high temps (red hardness), stronger/harder than 9CrSi, better toughness, less likely to chip
Hardness: HRC 60-62 (after heat treatment)
Use for: Hot shearing, light stainless steel, medium-strength steel

Cr12MoV / SKD11 High Carbon High Chromium Alloy Tool Steel

Traits: Great wear resistance and hardenability, medium toughness, little deformation after heat treatment, long life, handles small impacts
Hardness: HRC 58-60 (after heat treatment)
Use for: All thicknesses of low-carbon steel, Q235, aluminum plate, copper plate, thin low-carbon steel

H13 (4Cr5MoSiV1) Hot Work Die Steel

Traits: Strong at high temps, tough, resists heat fatigue; stays hard and works well in high-heat environments, won’t soften or deform easily
Hardness: HRC 50-55 (after heat treatment)
Use for: Hot shearing strip steel, thick hot plates, cold shearing high-strength alloy steel, thick stainless steel

D2 (American Standard)

Traits: High carbon and chromium; much better wear resistance and hardenability than regular alloy steel, resists deformation, won’t chip easily
Hardness: HRC 58-62 (after heat treatment)
Use for: Medium/low hardness plates (Q195/Q235/45# steel/40Cr), aluminum/copper/brass/red copper; plastic, rubber, paper, fiberboard, composites

LD (7Cr7Mo2V2Si) Cold Work Die Steel

Traits: High-performance; strong and tough; vanadium (V) and molybdenum (Mo) make it dense, super strong, tough, wear-resistant, and hard to chip
Hardness: HRC 58-62 (after heat treatment)
Use for: High-strength steel, thick plates, stainless steel, hard-to-cut metals; large hydraulic shears, heavy CNC shears

Blade Material Selection Guide & Key Tips

Use this simple guide to pick the right blade for your material. Follow the tips to avoid mistakes.

How to Choose Blade Material

Ordinary carbon steel (Q195, Q235, etc.): Choose 9CrSi or Cr12MoV. Low cost, good for basic shearing of all thicknesses.
Medium/low hardness steel, aluminum, copper (45# steel, 40Cr, aluminum/copper/brass/red copper): Choose SKD11 or D2. Wear-resistant, resists deformation, long life.
Light stainless steel, medium-strength steel: Choose SKD11 or D2. Balances wear resistance and chip resistance; stable performance.
Thick stainless steel, high-strength alloy steel, hard-to-cut thick plates (cold shearing): Choose H13 or LD. Strong, tough, hard to chip.
Hot shearing (strip steel, thick plates, high temps): Use H13 or H13K. Resists high-heat softening, handles heat fatigue and impacts well.

Key Tips for Blade Selection

Harder is not better. Balance hardness and toughness: Too hard = easy to chip; too soft = easy to dull. Choose based on your material and cutting load.
Heat treatment matters. Even good materials need professional quenching/tempering to work well (wear resistance, toughness).
Sticky materials (stainless steel, titanium alloy, aluminum, copper): Choose Cr12MoV or SKD11. Prevents sticking and chipping; faster, better cuts.

Don’t let low-quality blades slow your production. Choose high-performance shear blades from Alasmachinery for precision, speed, and long-term savings. Remember: Blade hardness (HRC) and size accuracy (tolerances, usually ±0.01mm) are key for consistent, straight cuts—even good materials fail if hardness or tolerances are wrong.

Blade Design: Match to Your Machine & Material

Blade design (thickness, angle, edge shape) must fit your shear type (guillotine, swing beam, hydraulic) and material. Key points:

Blade Thickness

Thicker blades: Stable for heavy cutting
Thinner blades: Good for precise cuts on thin sheets

Cutting Angle

Typically 1-3 degrees: Reduces cutting force, less material bending.
Smaller angle: Best for soft materials (e.g., aluminum).
Larger angle: Best for hard, high-strength steels.

Edge Geometry

Double-edged: Low cost (flip when one edge is dull).
Single-edged: More precise for special cuts.
Serrated: Prevents slippery materials (e.g., stainless steel) from sliding during cutting.

Maintenance Tips to Extend Blade Life

Even the best blades perform poorly without proper care. Follow these steps to make blades last and keep cuts consistent:

Keep blades clean: Remove metal shavings and dirt after each use. Prevents wear and rust.
Lubricate often: Use high-temperature lubricant on blade edges. Reduces friction, dulling, and heat buildup.
Sharpen when needed: Dull blades need more force, ruin materials, and strain machines. Sharpen when you see burrs, uneven cuts, or more force—use a professional service to keep the edge shape and HRC right.
Store properly: Keep blades in a dry, clean place when not in use. Use blade guards to protect the cutting edge from damage.

Common Mistakes to Avoid

Many fabricators make easy mistakes when choosing blades. These mistakes cost money and reduce productivity:

Wrong material grade: Using a low-HRC blade for hard materials = frequent dulling. Using a brittle high-HRC blade for soft materials = waste and chipping.
Ignoring tolerances: Poor size accuracy leads to uneven cuts and rework—especially for precise jobs.
Neglecting blade design: Using a blade with the wrong thickness or angle wears down the blade and machine.
Skipping maintenance: Not cleaning, lubricating, or sharpening blades shortens their life and hurts cut quality.

Conclusion: Choose the Right Blade for Success

Picking the right shearing machine blade is critical. It affects cut quality, machine life, and how efficiently you produce. Focus on material grade (HRC, tool steel type), tolerances, blade design, and maintenance. This ensures clean, smooth cuts, less downtime, and lower costs. Work with a trusted manufacturer (like Alasmachinery) that provides detailed specs and supports your needs—this gets the most out of your blade investment.

Shearing Machine Blade technical specifications

NO.	Product Name	Specification Dimensions (length x width x height/thickness) ）	Material	Remarks
1	shearing machine blade size	508x70X22	55CrSi， 9crsi，6crw2si ，cr12mov， H13	Customization services are available; we can manufacture according to your drawings, with a minimum order quantity of 1 piece.
2		508x80x25
3		1025x63x16
4		1025x80x20
5		L 1025x W 100 x T 25mm
6		L 1100 x W 64 x T 16mm
7		1100x80x20
8		1100x100x25
9		1300x63x16mm
10		1300x63x18
11		1300x80x20
12		L 1300x W 80x T 25mm
13		1300x100x25
14		1300x100x30
15	Manual Shearing Machine Blade szie	1703010
16		2053010mm
17		3503010

Common Material Overview of Shearing Machine Blade

The following table summarizes the type, core characteristics and main applicable shearing materials of common blade materials:

Blade Material	Material Type	Characteristics	Main Shearing Materials
9CrSi	Alloy Tool Steel	High hardness, high wear resistance, small quenching deformation, high cost performance	Thin cold-rolled plate, galvanized plate, aluminum plate, copper plate; non-metallic materials such as plastic and leather
6CrW2Si	Alloy Tool Steel	Contains tungsten element, excellent red hardness and wear resistance	Hot shearing operations materials, light stainless steel, medium strength steel
Cr12MoV/SKD-11	High Carbon High Chromium Steel	Excellent wear resistance and hardenability	Stainless steel, silicon steel, high strength steel, low carbon steel of various thicknesses, Q235, aluminum plate, copper plate
H13 (4Cr5MoSiV1)	Hot Work Die Steel	Excellent high temperature strength and thermal fatigue resistance	Hot-sheared hot rolled plate, iron plate, medium and thick plate, scrap metal, hot-sheared strip steel, cold-sheared high strength alloy steel, stainless steel thick plate
Cr12Mo1V1/ D2	High Carbon High Chromium Steel	High strength, good wear resistance, excellent chipping resistance	Stainless steel, high strength steel, silicon steel, medium and low hardness plates (Q195/Q235/45# steel / 40Cr, etc.), aluminum / copper / brass / red copper plate; non-metallic materials such as plastic / rubber / paper / fiberboard, composite materials
LD (7Cr7Mo2V2Si)	Cold Work Die Steel	High strength, good toughness, wear resistance and chipping resistance, excellent comprehensive performance	High strength steel, stainless steel, thick plate and hard-to-shear metal materials (for large hydraulic shearing machines, heavy CNC shearing machines)

Blade Metal Materials International Grade Corresponding Table

China (GB)	USA(ASTM)	Japan (JIS)	Germany (DIN)	Germany (W-Nr)	France (NF)	Russia (ROCT)	U.K (BS)
9CrSi	-	-	90CrSi5	1.2108	-	9XC	-
6CrW2Si	-	-	60WCrV7	1.255	55WC20	6XB2C	-
Cr12MOV	-	SKD11	X165CrMov12	1.2601	-	X12M	-
Cr12Mo1V1	D2	-	X155Cr12Mo12	1.2379	X160CrMoV12	-	BD
4Cr5MoSiVI	H13	SKD61	X40CrMoV5-1	1.2344	X40CrMoV5	4X5MO1C	BH13
LD	-	-	-	-	-	-	-
W18Cr4V	T1	SKH2	S18-0-1	1.3355	HS18-0-1	P18	BT1
W6Mo5Cr4V2	M2	SKH9	S6-5-2	1.3343	-	P6M5	BM2

metal-shear-blades-factory-inventory-01 Heavy-duty shearing machine blades in stock

Global Supply: High-Precision Shearing Machine Blades & Guillotine Knives

We manufacture industrial Shearing Machine Blades (Material: 9CrSi, 6CrW2Si, Cr12MoV, H13) designed for precision metal sheet cutting. Our guillotine knives feature exceptional toughness and wear resistance, suitable for hydraulic shearing machines, CNC cutters, and plate processing equipment. Available in custom lengths and multi-edge configurations for clean, burr-free cuts.