Welcome
Please confirm your preferences
Update Preferences

Product Suggestions

Product Family suggestions

Contact a Kennametal Expert

Customer Support

Find customer support centers around the globe.

Quick Order
Item(s) successfully added to cart
View Cart
Turn up your volume for less with our limited-time offers! Shop Now

Kennametal EDM Blocks

Our globally renowned portfolio of grades for metalforming and stamping is based on over 80 years of research and development of tungsten carbide-based materials. 

We have a large selection of conventional and low-corrosion rectangular blanks in stock. Each is sinter-HIP processed and stress-relieved for optimum performance in EDM machining. Blocks are available in standard sizes, which are individually packaged for easy delivery and handling. 

EDM Blocks Portfolio:

  • All grades are proven in their application.
  • Products stocked globally for quick delivery
  • Standard and corrosion-resistant grades
  • 200 standard sizes with custom sizes available upon request
  • Application, metallurgical, and process optimization services
Blanks in Boxes

         

Withstand Extensive EDM

Our latest grades were developed with a proprietary binder system and maintain the hardness and mechanical properties of our conventional grades. They resist the corrosion, pitting, and cracking commonly experienced during electrical discharge machining, especially in thick punches and large die segments. 

Cemented Tungsten Carbide Grades

We offer a wide variety of carbide grades, including submicron, fine, medium, and coarse-grained tungsten carbides with a mixture of binders and additives to create the right balance of hardness, toughness, abrasion, and corrosion resistance for the application.

Hardness: Hardness is determined by the percentage of binder and the grain size of the tungsten carbide particles. Generally, the more binder, the lower the hardness, and the larger the grains, the lower the hardness.

Wear Resistance: Generally, grades with more binder or coarser grains (lower hardness) will have less wear or abrasion resistance. However, there will be an increase in strength. It is always necessary to balance high hardness/high wear resistance with lower hardness/high strength. To test the abrasion or wear resistance of our carbide grades, we typically conduct a dry sand (G65) or slurry tests (B611).

Strength: The amount of binder and the variation in grain size will also affect the impact strength (a shock load) and the fracture toughness (a measure of crack initiation and crack propagation). More binder and/or coarser grains will generally increase the impact strength and the fracture toughness. With submicron grained grades, impact strength and the fracture toughness decrease when compared to coarser grained grades of equal cobalt content; however hardness increases. 

cemented carbide with medium-coarse grains

EDM Blocks Grade Descriptions

Unlike other carbide manufacturers, we produce our powders from the raw materials. This guarantees the highest quality tungsten carbide throughout the process and maximizes performance for the end user. 

Corrosion Resistant Binder Grades Optimized for the Wire EDM Process

Cobalt Binder Grades Optimized for the Wire EDM Process

View NowEDM Blocks Brochure Cover


EDM Blocks Brochure

Check out our brochure for additional information on EDM Blocks.

View Now
Select Filters
Filters
Filters
    View filters in
    Metric
    Inch
    Key Filters
    Over All Length [L]
    Over All Length [L]
    • 4.134 in(197)
    • 4.724 in(28)
    • 5.906 in(8)
    • 5.969 in(14)
    • 7.941 in(2)
    Over All Length [L] MintoOver All Length [L] Max
    Over All Length [L]
    Over All Length [L]
    • 105.0 mm(197)
    • 120.0 mm(28)
    • 150.0 mm(8)
    • 151.6 mm(14)
    • 201.701 mm(2)
    Over All Length [L] MintoOver All Length [L] Max
    Overall Width
    Overall Width
    • 2.205 in(28)
    • 2.803 in(2)
    • 3.988 in(14)
    • 4.134 in(197)
    • 5.906 in(8)
    Overall Width MintoOverall Width Max
    Overall Width
    Overall Width
    • 56.0 mm(28)
    • 71.2 mm(2)
    • 101.301 mm(14)
    • 105.0 mm(197)
    • 150.0 mm(8)
    Overall Width MintoOverall Width Max
    Thickness
    Thickness
    • 1.0 mm(4)
    • 1.5 mm(6)
    • 2.0 mm(5)
    • 2.5 mm(6)
    • 3.0 mm(6)
    • 3.5 mm(5)
    • 4.0 mm(5)
    • 4.5 mm(5)
    • 5.0 mm(6)
    • 5.5 mm(5)
    • 6.0 mm(4)
    • 6.5 mm(7)
    • 7.0 mm(5)
    • 7.5 mm(5)
    • 8.0 mm(6)
    • 8.5 mm(8)
    • 9.0 mm(4)
    • 9.5 mm(5)
    • 10.0 mm(6)
    • 10.5 mm(6)
    • 11.0 mm(3)
    • 11.5 mm(2)
    • 12.0 mm(8)
    • 12.5 mm(5)
    • 13.0 mm(1)
    • 13.5 mm(2)
    • 14.0 mm(2)
    • 14.5 mm(3)
    • 15.0 mm(6)
    • 15.5 mm(2)
    • 16.0 mm(4)
    • 16.5 mm(2)
    • 17.0 mm(1)
    • 17.5 mm(1)
    • 18.0 mm(3)
    • 18.5 mm(1)
    • 19.0 mm(3)
    • 19.5 mm(1)
    • 20.0 mm(6)
    • 20.5 mm(4)
    • 21.0 mm(3)
    • 22.0 mm(2)
    • 23.0 mm(4)
    • 24.0 mm(1)
    • 25.0 mm(6)
    • 25.5 mm(2)
    • 26.0 mm(2)
    • 28.5 mm(2)
    • 30.0 mm(5)
    • 30.6 mm(2)
    • 32.0 mm(2)
    • 35.0 mm(4)
    • 38.0 mm(1)
    • 40.0 mm(2)
    • 41.5 mm(1)
    • 44.5 mm(1)
    • 45.0 mm(1)
    • 50.0 mm(3)
    • 50.801 mm(2)
    • 51.0 mm(3)
    • 52.0 mm(1)
    • 53.0 mm(1)
    • 53.5 mm(1)
    • 54.0 mm(1)
    • 55.0 mm(3)
    • 55.5 mm(2)
    • 57.0 mm(2)
    • 58.0 mm(1)
    • 60.0 mm(4)
    • 60.5 mm(2)
    • 63.2 mm(2)
    • 63.5 mm(2)
    • 65.0 mm(1)
    • 70.0 mm(2)
    • 76.5 mm(2)
    • 85.5 mm(2)
    • 89.0 mm(2)
    Thickness MintoThickness Max
    Thickness
    Thickness
    • 0.039 in(4)
    • 0.06 in(6)
    • 0.079 in(5)
    • 0.098 in(6)
    • 0.119 in(6)
    • 0.138 in(5)
    • 0.157 in(5)
    • 0.177 in(5)
    • 0.197 in(6)
    • 0.217 in(5)
    • 0.237 in(4)
    • 0.256 in(7)
    • 0.276 in(5)
    • 0.295 in(5)
    • 0.315 in(6)
    • 0.335 in(8)
    • 0.354 in(4)
    • 0.374 in(5)
    • 0.394 in(6)
    • 0.414 in(6)
    • 0.433 in(3)
    • 0.453 in(2)
    • 0.473 in(8)
    • 0.492 in(5)
    • 0.512 in(1)
    • 0.531 in(2)
    • 0.551 in(2)
    • 0.572 in(3)
    • 0.591 in(6)
    • 0.61 in(2)
    • 0.63 in(4)
    • 0.65 in(2)
    • 0.669 in(1)
    • 0.69 in(1)
    • 0.709 in(3)
    • 0.728 in(1)
    • 0.748 in(3)
    • 0.768 in(1)
    • 0.787 in(6)
    • 0.807 in(4)
    • 0.828 in(3)
    • 0.866 in(2)
    • 0.906 in(4)
    • 0.946 in(1)
    • 0.984 in(6)
    • 1.004 in(2)
    • 1.024 in(2)
    • 1.122 in(2)
    • 1.181 in(5)
    • 1.205 in(2)
    • 1.26 in(2)
    • 1.379 in(4)
    • 1.496 in(1)
    • 1.575 in(2)
    • 1.635 in(1)
    • 1.752 in(1)
    • 1.772 in(1)
    • 1.969 in(3)
    • 2.0 in(2)
    • 2.008 in(3)
    • 2.047 in(1)
    • 2.087 in(1)
    • 2.106 in(1)
    • 2.126 in(1)
    • 2.165 in(3)
    • 2.185 in(2)
    • 2.244 in(2)
    • 2.283 in(1)
    • 2.362 in(4)
    • 2.382 in(2)
    • 2.488 in(2)
    • 2.5 in(2)
    • 2.559 in(1)
    • 2.757 in(2)
    • 3.012 in(2)
    • 3.366 in(2)
    • 3.504 in(2)
    Thickness MintoThickness Max
    No filters matching ""
    EDM Block • KMSB • 105mm x 105mm
    (213)

    EDM Block • KMSB • 105mm x 105mm

    EDM Block • KMFA • 56mm x 120mm
    (28)

    EDM Block • KMFA • 56mm x 120mm

    EDM Block • KMLD • 150mm x 150mm
    (8)

    EDM Block • KMLD • 150mm x 150mm

    Have Questions For Us?

    Our skilled staff is ready to help.

    Request More Information
    You are about to add to your My Solutions page. Do you want to proceed?
    Select the destination where you want to move to.
    New Folder
      • Applied Filters:
      • Clear All

    A folder with the name already exists.

    Please enter a valid name
    product-image
    Please adjust the following properties from

    ISO Catalog Number

    ANSI Catalog Number

    to find similar products.

    The following files are available

    Please select a file to download

    Models

    I have read and accepted the Terms & Conditions of use

    Can’t find the file type you’re looking for?

    You should be logged to see your dashboard information
    Session expired due to inactivity, please login again
    The product/s () you were trying to add to the cart is/are not available, please contact customer service
    item(s) successfully added to the cart
    View Cart

    . Please enter the desired qty for the material(s) you want to include in your promotion or Proceed Without Promotion and only your base materials will be added to the cart.

    Minimum quantity should be

    SAP Material Number ISO Catalog Number Grade  

    You are about to leave the Solution building process.

    Are you sure you want to leave?

    Workpiece Selection

    Standard

    ALL

    Material

    Select a Value

    Hardness

    --

        Hardness Scale

        --

          Permitted Groups :

          Group

          SubGroup

          Hardness (HB)

          Hardness (HRC)

          CancelOk