Ideal Choice for Precision Stamping Progressive Dies
Corrosion-resistant carbide EDM, High-speed stamping die blocks, Custom carbide EDM blocks
Designed specifically for precision stamping dies, offering high accuracy and consistency, ensuring die life and product quality.
Ultra-High Hardness and Wear Resistance: Superior performance from WC-Co with added complex carbides — handles high loads and extended use, extending die life and reducing production costs.
Outstanding Corrosion Resistance: Resists various corrosive media, ensuring the die operates normally even in harsh environments.
Low Stress Characteristics: Reduces stress during die processing, minimizing deformation and cracking, ensuring die accuracy.
Double Crystal Structure: Unique structure enhances the strength and toughness of hard alloy, effectively improving the durability and reliability of the die.
Exceptional Impact Resistance: The toughness of hard alloy withstands the impact forces during stamping, preventing die damage.
- Customizable Service: Offers customized products and services based on specific customer requirements.
- Technical Support: Provides professional technical advice and after-sales service to assist customers in resolving issues during use.
What are tungsten carbide EDM blocks used for?
Tungsten carbide blocks (stress-free EDM blocks) are machined by electrical discharge machining into Punches, Inserts, Buttons, Blanking, precision carbide die stamping parts, etc.
The use of Cemented Carbide on appropriate tools can significantly improve efficiency and reduce costs by increasing tool lifespan, stability, and dimensional accuracy.
Tungsten Carbide EDM Blocks for Progressive Stamping Dies
Tungsten carbide for automotive stacked, skewed-rotor and stator stamping tools.
EDM Wire Cutting Blanking & Forming Tools, Carbide Blanks, Carbide Preform Stripper, Carbide Ring.
We offer corrosion resistant carbide suitable for EDM, providing you with high quality solutions.
Our tungsten carbide is designed for various punching materials, including: silicon steel sheet, SPCC, iron strip, beryllium copper strip, stainless steel, and beryllium copper.
Widely used by stamping die makers for motor cores, EI cores, LED brackets, lead frames and connectors, and recommended by optical profile grinding (OPG) shops.Material advantages: high hardness, high strength, high wear resistance, sharp cutting edge, suitable for precision high-speed progressive dies with stamping speed of SPM300-2000 per minute or more.
Tungsten Carbide Technology for Stamping Tools
- Corrosion resistant tungsten carbide EDM block.
- Add chromium, tantalum and other complex carbides to enhance the double grain tungsten carbide wear resistance and better impact resistance – longer life.
- Cold isostatic pressing + HIP sintering (1450°C) for more uniform density – more stable.
- Tempering + deep cold treatment (-200 degree Celsius), less stress – avoid cracking.
- Double endface grinding treatment to reduce wire cut cracking due to sintered microcracks.
►ISO 9001:2015 Certified
►RoHS Compliance
►Custom Material Traceability Reports
Cemented Carbide for Precision Stamping Dies — 2026 Catalog
Grade selection guide, YF / YA / YU series properties, the hardness–toughness grade map, EDM block stock sizes and cold-heading fastener grades — the complete technical reference behind this page, in one PDF.
Explanation of Carbide EDM Block Grades
We use primary tungsten carbide powder, unlike other carbide manufacturers, which guarantees the highest quality of tungsten carbide throughout the entire machining process and maximises consistent performance for the end user.
Corrosion-resistant binder grades optimized for WEDM processes, with excellent wear resistance and high edge sharpness.
YF series
The YF series (10–16.5% Co binder, submicron grain) is designed for heavy-duty stamping applications. It has a medium cobalt content and a blended tungsten carbide powder grain size for enhanced impact resistance, improved vibration resistance and corrosion resistance. This reduces corrosion and debris on the finished carbide surface.
Applications: Stamping dies for laminations, spring steel stampings, coining dies, motor cores, silicon steel sheets and high speed metal stampings.
YA series
Composition: 12%-15% corrosion-resistant binder mix with submicron grain structure, good general properties and toughness, medium cobalt and fine grain hard material. High wear resistance and good chipping resistance. Good electrical machinability.
Applications: YA series is ideal for high-speed stamping of SPCC, steel strip, beryllium copper strip and 304 stainless steel electronic components.
This series is well known in the leadframe and connector industries and is therefore recommended for PG component manufacturing.
lead frames, connectors, LED holders, high speed precision stampings.
YU series
Composition: 10%-12% corrosion-resistant binder with 0.4-0.8μm submicron grain structure. Very good wear resistance with high edge sharpness.
Applications: grades for case stretching dies, such as electric car battery case 18650 21700, 46800, round or square. Also suitable for micro motor case stretching die.
EDM Block Grades Physical Properties
| Series | Grade | Cobalt content Co% | Density (g/cm³) | Hardness (HRA) | KIC (MNm-3/2) | TRS (MPa) | Compression Strength (MPa) | Young's modulus (GPa) | Grain Size (μm) |
| YF | YF22H | 10.0 | 14.35 | 89.0 | 14.5 | 3400 | 4500 | 550 | 2.0-5.0 |
| YF30P | 12.0 | 14.15 | 90.0 | 12.5 | 3600 | 4900 | 580 | 1.0-2.0 | |
| YF40H | 12.5 | 14.20 | 89.5 | 13.5 | 3700 | 4700 | 570 | 1.0-2.0 | |
| YF50H | 14.0 | 14.00 | 88.5 | 14.5 | 3800 | 4600 | 550 | 1.5-3.0 | |
| YF55HH | 16.5 | 13.80 | 87.4 | 15.5 | 3500 | 4200 | 540 | 1.0-4.0 | |
| YA | YA50 | 15.0 | 13.95 | 90.5 | 17.0 | 4000 | 4800 | 580 | 0.6-0.8 |
| YA47S | 12.0 | 14.20 | 91.3 | 14.2 | 3800 | 4600 | 550 | 0.6-0.8 | |
| YA40S | 10.0 | 14.45 | 91.8 | 12.6 | 4000 | 4800 | 580 | 0.6-0.8 | |
| YA10H | 6.0 | 14.85 | 90.5 | 13.0 | 3000 | 5200 | 620 | 0.5-5.0 | |
| YA18 | 12.0 | 14.17 | 89.2 | 13.5 | 3600 | 5500 | 570 | 1.0-2.0 | |
| YA20 | 13.5 | 14.05 | 90.0 | 12.0 | 3700 | 5300 | 560 | 0.5-1.5 | |
| YA30 | 12.0 | 14.15 | 91.2 | 10.5 | 3600 | 5400 | 590 | 0.4-0.8 | |
| YU | YU20 | 10.3 | 14.40 | 91.5 | 10.5 | 3800 | 5600 | 600 | 0.8 |
| YU25UF | 12.0 | 14.05 | 92.2 | 8.5 | 4400 | 6000 | 570 | 0.5 |
Recommendations for the use of carbide grades for stamping dies
Confirmed by many precision high-speed die makers and users.
| Stamped Material | Thickness (mm) | Stamping speed (SPM) | Punch | Dies | Remark |
| Copper Alloys | <0.3 | 400-1500 | YA30/YA50 | YA30/YA50 | Best |
| <0.5 | 150-1500 | YA50/YA20 | YA20 | General | |
| 0.5-1.0 | 100-300 | YA18 | YA18 | Thick material | |
| Stainless steel | <0.2 | 400-1200 | YA30 | YA20 | Best |
| 0.2-0.5 | 300-800 | YA30/YA18 | YA18 | - | |
| 0.5-1.2 | 100-500 | YA18 | YA18 | - | |
| Pure Copper / Pure Iron | <0.6 | 200-600 | YA30/YF22 | YA20 | - |
| Silicon Steel Sheet | <0.3 | 100-400 | YF40H | YF50H | |
| <0.5 | 100-300 | YF50H | YF55H |
Carbide Standard Blocks (mm)
Ready-to-Ship EDM Blocks in 105x105mm to 305x305mm Sizes – In Stock Now
*Standard Size Carbide EDM Blocks in Stock
| L (+0.6-+2.0) | W (+0.6-+2.0) | H (+0.2-+0.5) |
|---|---|---|
| 105 | 105 | 1.5-60 |
| 125 | 112.5 | 1.5-60 |
| 150 | 150 | 1.5-60 |
| 205 | 205 | 15-40 |
| 255 | 255 | 15-40 |
| 305 | 305 | 15-40 |
The cemented carbide series developed by us are mainly used in various high-precision stamping dies, high-precision connector terminal stamping dies, chip lead frame dies, LED bracket dies, high-precision multi-station dies, etc.
EDM Block Lifecycle Cost Analysis
Cost per 100k Strokes = (Block Price ÷ Total Strokes) × 100,000
Yatech Carbide EDM Blocks: $0.18 vs Industry Avg. $0.27
Carbide Precision Stamping Die Solution Partner
Carbide EDM Blocks Stock List
125 × 112 mm
25 sizes| H (mm) | YA20 | YA30 | YA20N | YF40H |
|---|---|---|---|---|
| 1 | ||||
| 1.5 | ||||
| 2 | ||||
| 2.5 | ||||
| 3 | ||||
| 3.5 | ||||
| 4 | ||||
| 4.5 | ||||
| 5 | ||||
| 5.5 | ||||
| 6 | ||||
| 6.5 | ||||
| 7 | ||||
| 7.5 | ||||
| 8 | ||||
| 8.5 | ||||
| 9 | ||||
| 9.5 | ||||
| 10 | ||||
| 12 | ||||
| 13 | ||||
| 14 | ||||
| 15 | ||||
| 16 | ||||
| 17 |
105 × 105 mm
19 sizes| H (mm) | YA20 | YA30 | YA20N | YF40H |
|---|---|---|---|---|
| 18 | ||||
| 20 | ||||
| 22 | ||||
| 25 | ||||
| 28 | ||||
| 30 | ||||
| 35 | ||||
| 40 | ||||
| 45 | ||||
| 50 | ||||
| 52 | ||||
| 53 | ||||
| 55 | ||||
| 56 | ||||
| 57 | ||||
| 58 | ||||
| 60 | ||||
| 62 | ||||
| 65 |
In stock, ready to shipNot stocked in this gradeOther sizes are produced to drawing — request a quote
