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ISO 8256 Cutting Die – Tensile Impact Specimen Type 3
Tensile Impact Specimen Type 3 · Tensile impact specimen — built to ISO 8256. Hardened steel or economical ribbon steel.
Brand: Universal Grip | Model: UGC-CDH-ISO8256-T3 / UGC-CDR-ISO8256-T3 | ● Made to order
Cuts the ISO 8256 tensile Impact Specimen Type 3 profile: 10.0 × 10.0 mm narrow section, 80 mm overall length
Two styles: hardened steel for 0–5 mm, ribbon steel for 0–3 mm
Integral ejector (hardened) or foam pad (ribbon) pushes each specimen free
Fits manual, pneumatic and hydraulic sample-cutting presses
Free test cuts on your material before you order
Custom profiles, multi-cavity dies and nick/notch features on request
Downloads: Ribbon Steel Die Data Sheet (PDF)
Standards: ISO 8256
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Precision cutting die for ISO 8256 tensile Impact Specimen Type 3 specimens
This Universal Grip die cuts the tensile Impact Specimen Type 3 (tensile impact specimen) defined in ISO 8256: Plastics — Determination of tensile-impact strength. ISO 8256 measures the energy to break plastics under high-speed tensile impact, using a pendulum, for materials too flexible or thin for Charpy or Izod. The Type 3 short dumbbell is used for rigid and semi-rigid plastics and sheet.
We make it in two styles so the die suits the material you cut. The one-piece hardened steel die is machined from a single piece of steel and holds its edge on rigid & semi-rigid plastics, filled compounds, rubber, sheet & film from 0 to 5 mm thick. The ribbon steel (steel-rule) die uses a precision-bent hardened rule in a laser-cut plywood base with a foam ejection pad, an economical choice for rubber, elastomers, TPE, foams, soft plastics & films up to 3 mm. Both cut the same ISO 8256 profile.
ISO 8256 specimen dimensions
The die is cut to the nominal profile in ISO 8256: overall length 80 ± 2 mm, width of ends 15.0 ± 0.5 mm, length of narrow section 10.0 ± 0.2 mm, width of narrow section 10.0 ± 0.5 mm, transition radius 20 ± 1 mm and thickness 4 mm. Always check your current edition of the standard for tolerances and the test procedure.
Where it is used
Typical uses for ISO 8256 specimens include thin sheet & film, flexible thermoplastics, automotive trim and pipe & profile materials.
Cutting specimens with the die
Put the die on an arbor press or a pneumatic press, set your sheet on a nylon cutting plate and press through in one stroke; the ejector pushes the specimen out ready to test. No press yet? An adapter lets the die run on your universal testing machine. Send us a sample of your material and we will make test cuts free of charge, so you can confirm the edge quality before you order. Hardened dies can be re-sharpened with our die sharpening tool.
ISO 8256 Cutting Die Specifications
STANDARD
ISO 8256
SPECIMEN
Tensile Impact Specimen Type 3
SPECIMEN TYPE
Tensile impact specimen
OVERALL LENGTH
80 ± 2 mm
WIDTH OF ENDS
15.0 ± 0.5 mm
LENGTH OF NARROW SECTION
10.0 ± 0.2 mm
WIDTH OF NARROW SECTION
10.0 ± 0.5 mm
TRANSITION RADIUS
20 ± 1 mm
THICKNESS
4 mm
HARDENED STEEL DIE
One-piece machined steel, 0–5 mm material, integral ejector plate
RIBBON STEEL DIE
Steel rule in plywood base, 0–3 mm material, foam ejection pad
PRESS COMPATIBILITY
Manual, pneumatic & hydraulic sample-cutting presses
PART NUMBERS
UGC-CDH-ISO8256-T3 (hardened) · UGC-CDR-ISO8256-T3 (ribbon)
Models & Options
Hardened Steel Cutting Die — One-piece machined, hardened and precision-finished; rigid & semi-rigid plastics, filled compounds, rubber, sheet & film; 0–5 mm; integral ejector plate; re-sharpenable (UGC-CDH-ISO8256-T3)
Ribbon Steel Cutting Die — Precision-bent hardened steel rule in a laser-cut plywood base with closed-cell foam ejection pad; rubber, elastomers, TPE, foams, soft plastics & films; 0–3 mm; economical, fast turnaround (UGC-CDR-ISO8256-T3)
Press mounting — Matched to your press make and model, or an adapter for your universal testing machine (Specify at order)
Custom features — Custom profiles, multi-cavity dies and nick/notch features on request (Custom)
What's Included
ISO 8256 cutting die in your chosen style (hardened or ribbon steel)
Specimen ejection: integral ejector plate (hardened) or foam ejection pad (ribbon)
Mounting to suit your press — tell us the make and model
Data sheet with the nominal profile dimensions
Supported Test Standards
ISO 8256 — Plastics — Determination of tensile-impact strength
Compatible Grips & Fixtures
Arbor press — Benchtop press for cutting tensile Impact Specimen Type 3 specimens with this die
Sample die press — Specimen-preparation presses and tools
Die sharpening tool — Restore the cutting edge of a hardened steel die
Plastics testing — Grips and fixtures for plastic film, sheet and molded parts
“Customer quote”
Related Equipment
ISO 180 Type A Cutting Die
Notched Izod Bar · length 80 ± 2 mm, width 10.0 ± 0.2 mm
ASTM D1822 Type L Cutting Die
Tensile-Impact Dumbbell · 3.18 × 9.53 mm narrow section
GOST 19109 Type A Cutting Die
Notched Izod Bar · length 80 ± 2 mm, width 10.0 ± 0.2 mm
GOST 34250 Type 2 Cutting Die
Tensile-impact Dumbbell · 3.0 × 10 mm narrow section
ISO 8256 Cutting Die FAQ
What is the ISO 8256 test used for?
ISO 8256 measures the energy to break plastics under high-speed tensile impact, using a pendulum, for materials too flexible or thin for Charpy or Izod. The Type 3 short dumbbell is used for rigid and semi-rigid plastics and sheet.
What are the ISO 8256 specimen dimensions?
The die cuts the nominal ISO 8256 profile: overall length 80 ± 2 mm, width of ends 15.0 ± 0.5 mm, length of narrow section 10.0 ± 0.2 mm, width of narrow section 10.0 ± 0.5 mm, transition radius 20 ± 1 mm and thickness 4 mm. These values come from the standard; check your current edition for tolerances.
Hardened steel or ribbon steel: which ISO 8256 die should I choose?
For rigid and semi-rigid plastics, filled compounds and sheet up to 5 mm, choose the hardened steel die. The ribbon steel die is the economical option for soft plastics and films up to 3 mm.
Which press do I need for the ISO 8256 die?
The die fits manual, pneumatic and hydraulic sample-cutting presses. On our arbor press it mounts with a lateral screw, and an adapter lets it run on a universal testing machine. Tell us your press make and model and we will match the mounting.
Can you make test cuts on my material?
Yes. Send us a sample of your sheet and we will make test cuts free of charge, so you can see the edge quality and confirm the right die style before you order.
Can you make a custom or multi-cavity ISO 8256 die?
Yes. We make custom profiles, multi-cavity dies and nick or notch features on request. Send the drawing or standard, your material and thickness, and your press model.