Wolfram carbide EDM blocks
Tungsten carbide EDM blocks
Carbide EDM blocks

Wolfram carbide EDM blocks for stamping molds and stamping dies

  1. Raw material selection: High quality tungsten carbide powder is preferred. 100% virgin material.
  2. Imported German PVA sintering furnace. HIP sintering. Which can keep wolfram carbide edm blocks in high density, High wear resistance, excellent resists electrochemical corrosion high-performance.
  3. The EDM block is subjected to cryogenic treatment, which effectively relieves internal stress in the material and prevents workpiece cracking or deformation caused by stress release during processing.
  4. Professional engineers and quality inspection teams ensure product process inspection and acceptance inspection to ensure stable product quality and prevent unqualified products from being shipped.
  5. More than 40 years of manufacturing experience.
  6. The wolfram carbide edm blocks performance and service life are close to 90-97% of Guhringg, Ceratizitt, Boehleritt and Kennametall.
  7.  Wolfram carbide edm blocks are suitable for Impacting punches, Coining dies, Forming dies, Can die punches, Swaging dies, Cold forming, Back extrusion punches & dies, high-impact extrusion dies.
Category:
Wolfram carbide EDM blocks grades:
Grade Composition (%) Density (g/cm3) Hardness (HRA) T.R.S (N/mm²)
YG6A 6%co 94%wc 14.85 ≥92.5 ≥2000
YG8 8%co 92%wc 14.7 ≥89.8 ≥2800
YG10X 10%co 90%wc 14.35 ≥91.5 ≥3600
YG11 11%co 89%wc 14.4 ≥88.5 ≥2900
YG15 15%co 85%wc 14 ≥87.0 ≥3000
YG20 20%co 80%wc 13.5 ≥85.5 ≥2800
YG13X 13%co 87%wc 14.2 ≥90.0 ≥3200
BT15 10%co 90%wc 14.35 ≥92.2 ≥3900
YG6A Fine grain alloy, good wear resistance. It is suitable for manufacturing forming cutter, wear-resistant parts etc.
YG8  

High bending strength, wear resistance lower than YG6A, suitable for manufacturing forming cutter, wear-resistanparts etc.
YG11
YG15 Suitable for manufacturing punching dies, wear-resistant parts etc.
YG20  

High bending strength, suitable for manufacturing progressive dies and other punching dies.
YG13X
BT15 Submicron grain size, High performance, making cutting tools, suitable for cutting ordinary alloy steel, aluminum alloy, heat resistant alloy, cast iron, etc.
Wolfram carbide EDM blocks sizes:
Tungsten carbide EDM blocks sizes
Length
(mm)
(L)		 Tolerance Width
(mm)
(W)		 Tolerance Thickness
(mm)
(T)		 Tolerance
100 +2.0/0 100 +2.0/0 1.0-70.0 +0.5/+0.2
105 +2.0/0 105 +2.0/0 1.0-70.0 +0.6/+0.2
110 +2.0/0 110 +2.0/0 1.0-70.0 +0.8/+0.2
120 +2.0/0 120 +2.0/0 1.0-70.0 +1.0/+0.2
135 +2.0/0 135 +2.0/0 1.0-70.0 +1.2/+0.2
150 +2.5/0 150 +2.5/0 1.0-70.0 +1.2/+0.2
200 +2.5/0 200 +2.5/0 3.0-70.0 +1.2/+0.2
250 +5.0/0 250 +5.0/0 15.0-60.0 +1.2/+0.2
300 +7.0/0 300 +7.0/0 20.0-60.0 +1.2/+0.2

Carbide EDM blocks details:

Carbide EDM blocks

EDM blocks

 

 

FAQ for carbide EDM blocks:
Q1: What is a tungsten carbide EDM block?

A: Tungsten carbide EDM blocks are ground solid sintered carbide blanks specially made for wire cut EDM (WEDM) and sinker EDM. They are used as raw material to fabricate mold inserts, punches, dies and wear-resistant precision parts via electrical discharge machining.

 

Q2: Do you apply cryogenic treatment to your carbide blocks?

Yes, all our carbide EDM blocks go through deep cryogenic treatment to eliminate internal residual stress and minimize cracking during wire cutting.

 

Q3: What’s your MOQ for standard / custom carbide EDM blocks?

A: Standard stock sizes: small MOQ, sample order acceptable (1–2 pcs for testing). Non-standard customized shapes require higher MOQ to cover mold & sintering cost.

 

Q4: What’s your production lead time?

A: Stock ground plates: 2–3 working days.
Standard custom carbide EDM blocks: 10–25 days

 

Main applications of carbide EDM blocks:

Processing of High-Hardness and Difficult-to-Machine Materials: This is the core advantage of cemented carbide EDM blocks. They enable efficient machining of hard-to-process materials such as cemented carbide (tungsten carbide), titanium alloys, and high-temperature alloys using conventional methods. They are particularly suitable for manufacturing high-hardness, high-precision molds and parts, including injection molds, stamping dies, engine turbines, and medical devices.

Core Conductive Component of EDM Machines: In wire-cut EDM machines, it serves as a critical conductive block responsible for stably transmitting high-frequency current to the electrode wire. Thanks to its ultra-high hardness, it withstands high-speed friction from the electrode wire while preventing deflection, ensuring machining accuracy.

Manufacturing of High-Precision Complex Molds: Used in the production of molds for precision electronic components (e.g., connectors, semiconductors), it can machine extremely narrow slots, tiny holes, and other complex geometries beyond the capability of conventional cutting tools. Our company offers over 100 standard sizes and supports custom customization to meet diverse machining requirements.

Fabrication of Mold Core Components: Featuring a combination of ultra-high hardness and favorable toughness, it is widely used to produce punches, dies, drawing dies, as well as various wear-resistant inserts, guide bushes, guide pillars, and other key parts for stamping molds.

 

Please send us inquiries for quotations and free samples for testing:

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