Nanjing, China
T/T, Money Gram
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Eagle shear replacement blades
Hydraulic scrap shear knives
Demolition shear blades for excavators
Replacement cutting tools for mobile shears
Double-cylinder scissors blades
Hydraulic scissors blades for excavators
Upper Primary Blade
Upper Secondary Blade
Piercing Tips Blade
Guide Blade
Cross Blade
Lower Secondary Blade
Lower Primary Blade
Materials: 9CrSi, 6CrW2Si, Cr12MoV, H13, H13K, LD
Shape: Rectangular cross-section
Hardness: HRC50–62
Quality: Precise cuts, no burrs
Customization: Available by your drawings
H13 (4Cr5MoSiV1)Type: Hot Work Die Steel
Key Features: Good high-temperature strength and fatigue resistance
What It Cuts: Hot-rolled plate, iron plate, scrap metal, stainless steel thick plate
LD (7Cr7Mo2V2Si)Type: Cold Work Die Steel
Key Features: Strong, tough, wear-resistant, not easy to chip
What It Cuts: High-strength steel, stainless steel, thick plate, hard-to-cut metals
Hardness: HRC52–55 after heat treatment
Features: Resists impact and high temperature, tough core
Use for: ≥160T alligator shears; cuts ultra-thick steel (≥30mm), alloy steel, thick pipes
Pros: Good for heavy impact, no chipping/breakage, easy to use
Features: Better than H13; tougher, more stable at high temperatures
Use for: ≥180T large alligator shears; cuts extra-thick steel (≥40mm), heavy alloy steel, large structural steel
Pros: More durable than H13; 20–30% longer service life
Hardness: HRC60–64 after heat treatment
Features: Very wear-resistant, uniform hardness
Use for: 100T–160T alligator shears; cuts 10–30mm steel, rebar, rusty scrap
Pros: Most wear-resistant; fewer replacements, higher efficiency
Vacuum heat treatment: No surface oxidation; uniform hardness
Low-temperature tempering (180–220℃): Reduces internal stress; prevents deformation/cracking
Common choice: H13 (for crocodile/shear blades)
Complex scrap: Choose H13K
Higher requirements: Contact us for material upgrades
We don’t just sell replacements — we improve performance
Optimize blades for your machine (mobile/stationary) to lower costs
Precision blades: Less vibration, fewer replacements, more profit
Tough design: Cuts hard scrap without breaking (hard outer layer, tough core)
Resists impact: No chipping/cracking when cutting thick beams/pipes
Fits most machines: Perfect bolt holes: Easy to install
Precise alignment: Clean cuts even on thin/bundled scrap
Saves money: Reduces machine wear; lower cost per ton of scrap
China (GB) | USA(ASTM) | Japan (JIS) | Germany (DIN) | Germany (W-Nr) | France (NF) | Russia (ROCT) | U.K (BS) |
Cr12Mo1V1 | D2 | - | X155Cr12Mo12 | 1.2379 | X160CrMoV12 | - | BD |
4Cr5MoSiVI | H13 | SKD61 | X40CrMoV5-1 | 1.2344 | X40CrMoV5 | 4X5MO1C | BH13 |
LD | - | - | - | - | - | - | - |
Mechanical blades are (special wearing parts) due to different cutting products, correct and reasonable selection of materials, heat treatment hardness, grinding accuracy, packaging requirements. Please contact us before purchase and confirm whether the blade specifications materials you need are available goods.



French (Français): Lames de cisaille à ferraille | Couteaux pour recyclage de métaux
Italian (Italiano): Lame per cesoia rottami | Lame per riciclaggio metalli
Portuguese (Português): Lâminas para cisalha de sucata | Facas para reciclagem de metal
Polish (Polski): Noże do nożyc do złomu | Noże do recyklingu metalu
Turkish (Türkçe): Hurda Makas Bıçakları | Metal Geri Dönüşüm Bıçakları
Vietnamese (Tiếng Việt): Lưỡi dao cắt sắt vụn | Dao máy cắt phế liệu
Thai (ภาษาไทย): ใบมีดตัดเศษเหล็ก | ใบมีดเครื่องรีไซเคิลโลหะ
Arabic (العربية): شفرات قص الخردة | سكاكين إعادة تدوير المعادن
Hindi (हिन्दी): स्क्रैप शीयर ब्लेड | धातु पुनर्चक्रण चाकू
Indonesian (Bahasa Indonesia): Pisau Potong Besi Tua | Bilah Daur Ulang Logam
Malay (Bahasa Melayu): Bilah Pemotong Besi Buruk | Mata Pisau Kitar Semula
Dutch (Nederlands): Schroot schaarbladen | Messen voor metaalrecycling
Swedish (Svenska): Skrotsaxskär | Knivar för metallåtervinning
Hungarian (Magyar): Ócskavas vágó pengék | Fém újrahasznosító kések
Greek (Ελληνικά): Λεπίδες ψαλιδιού σκραπ | Μαχαίρια ανακύκλωσης μετάλλων



Nanjing Alas International Co., Ltd. is a professional industrial tooling manufacturer focused on shear blades, bending dies, shredder blades, and custom wear parts. We offer full application engineering, material selection, setup guidance, and after-sales support to global customers.
Tell us your requirements, and our engineering team will provide professional solutions for blade specification, tool life optimization, and cost-effective production.
