Product Overview

Core Product Advantages

1. High Hardness Alloy Integrated Cutting Edge
   Adopts chrome-manganese tool steel as raw material, treated with high-temperature quenching to reach HRC 60 hardness. Integrated one-piece forming avoids splicing gaps; ultra-sharp polished inner edge cuts clean smooth samples without tearing or serrated edges, ensuring fracture occurs in the standard gauge section during tensile testing rather than cutting defects.
2. Micron-Level Dimensional Precision Control
   All contour sizes are processed by precision wire electrical discharge machining, overall dimensional tolerance controlled within ±0.1~0.2mm. Every finished die passes three rounds of caliper inspection to fully match the official dimension drawings of ASTM D412 Die C standard, meeting export laboratory compliance testing requirements.
3. Anti-Deformation Thick Wall Structural Design
   The die body adopts thickened wall layout to prevent bending and distortion under long-term stamping impact. Even after thousands of continuous punching cycles, the internal profile remains unchanged, effectively extending service life and reducing frequent mold replacement costs for mass sample preparation workshops.
4. Wide Material Compatibility & Multi-Standard Customization
   The standard D412 dumbbell die fits rubber, silicone, soft plastic film, leather and coated paper. We also provide customized molds compliant with ISO 37, ASTM D638, JIS K6301 and other global test standards, including tear dies, rectangular strip cutters and miniature dumbbell molds for micro samples.
5. Simple Matching & Easy Operation
   Can be directly placed on the platform of all common sample cutting machines, no complicated fixture modification required. After stamping, specimens separate smoothly from the mold cavity without sticking residue; the smooth inner surface is easy to wipe and clean to avoid cross-contamination of different formula materials.

Complete Technical Parameter Sheet

Standard Sample Stamping Operating Steps

1. Flat Material Placement
   Lay the vulcanized rubber/plastic sheet flat on the cutting machine platform, remove surface dust and particles to prevent indentations on specimens.
2. Mold Position Alignment
   Place the dumbbell die flat on the target cutting area with the sharp cutting edge facing down, align the die back with the stamping pressure head of the cutting equipment.
3. One-Time Stamping Molding
   Start the slicer/hydraulic press to apply uniform vertical pressure, complete one-shot cutting without repeated extrusion to avoid edge deformation.
4. Specimen Separation & Inspection
   Lift the mold and take out the dumbbell sample, check the edge for burrs or uneven cutting; discard defective specimens and re-stamp if dimensional errors exist.
5. Mold Daily Maintenance
   Wipe residual rubber/plastic debris from the inner cavity after use, store in a dry dust-proof box to prevent blade rust and passivation.

Wide Application Scenarios

Rubber & Silicone Manufacturing Plants

Flexible Plastic Film Factories

Leather & Composite Material Workshops

University Polymer Teaching Labs

Third-Party Accredited Testing Institutes

Global Distributor & After-Sales Support

Product Banner Marketing Text

Core Feature Labels For Product Pictures

Safety Operation Reminder