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GOST 7912 Cutting Die – Brittleness Strip
Brittleness strip · Low-temperature brittleness specimen — built to GOST 7912. Hardened steel or economical ribbon steel.
Brand: Universal Grip | Model: UGC-CDH-GOST7912 / UGC-CDR-GOST7912 | ● Made to order
Cuts the GOST 7912 brittleness Strip profile: length 25 to 45 mm, width 6.0 ± 0.5 mm
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: GOST 7912
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Precision cutting die for GOST 7912 brittleness Strip specimens
This Universal Grip die cuts the brittleness strip (low-temperature brittleness specimen) defined in GOST 7912: Rubber - Method for determination of temperature limit of brittleness. Narrow strips are clamped as cantilevers, chilled and struck to find the lowest temperature at which the rubber does not crack. Width is set by the cutter and the long axis follows the calendering direction.
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 GOST 7912 profile.
GOST 7912 specimen dimensions
The die is cut to the nominal profile in GOST 7912: length 25 to 45 mm, width 6.0 ± 0.5 mm and thickness 2.0 ± 0.2 mm. Always check your current edition of the standard for tolerances and the test procedure.
Where it is used
Typical uses for GOST 7912 specimens include cold-climate seals, automotive rubber parts, compound low-temperature screening and aerospace elastomers.
Cutting specimens with the die
The die mounts on a benchtop arbor press with a simple lateral screw; the material sits on a hard nylon cutting plate so every stroke cuts cleanly through. With an adapter, the same die can also cut specimens 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.
GOST 7912 Cutting Die Specifications
STANDARD
GOST 7912
SPECIMEN
Brittleness strip
SPECIMEN TYPE
Low-temperature brittleness specimen
LENGTH
25 to 45 mm
WIDTH
6.0 ± 0.5 mm
THICKNESS
2.0 ± 0.2 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-GOST7912 (hardened) · UGC-CDR-GOST7912 (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-GOST7912)
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-GOST7912)
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
GOST 7912 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
GOST 7912 — Rubber - Method for determination of temperature limit of brittleness
Compatible Grips & Fixtures
Arbor press — Benchtop press for cutting brittleness Strip specimens with this die
Sample die press — Specimen-preparation presses and tools
Die sharpening tool — Restore the cutting edge of a hardened steel die
Elastomer testing — Grips, fixtures and dies for rubber and TPE testing
“Customer quote”
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GOST 7912 Cutting Die FAQ
What is the GOST 7912 test used for?
Narrow strips are clamped as cantilevers, chilled and struck to find the lowest temperature at which the rubber does not crack. Width is set by the cutter and the long axis follows the calendering direction.
What are the GOST 7912 specimen dimensions?
The die cuts the nominal GOST 7912 profile: length 25 to 45 mm, width 6.0 ± 0.5 mm and thickness 2.0 ± 0.2 mm. These values come from the standard; check your current edition for tolerances.
Hardened steel or ribbon steel: which GOST 7912 die should I choose?
For most rubber and TPE sheet around 2 mm thick, the ribbon steel die is the economical choice. Choose hardened steel for filled or harder compounds, sheet up to 5 mm, or high daily volumes, since it lasts longer and can be re-sharpened.
Which press do I need for the GOST 7912 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 GOST 7912 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.