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GOST R 57950 Cutting Die – Rheometer Disc
Rheometer disc · Oscillatory rheometry specimen — built to GOST R 57950. Hardened steel or economical ribbon steel.
Brand: Universal Grip | Model: / UGC-CDR-GOSTR57950 | ● Made to order
Cuts the GOST R 57950 rheometer Disc profile: diameter 25 mm, typical gap / thickness 1-2 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 R 57950
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Precision cutting die for GOST R 57950 rheometer Disc specimens
This Universal Grip die cuts the rheometer disc (oscillatory rheometry specimen) defined in GOST R 57950: Plastics - Determination of dynamic mechanical properties - Part 10: Complex shear viscosity using a parallel-plate oscillatory rheometer. Disc specimens are loaded between parallel plates and oscillated to measure complex shear viscosity and moduli of polymer melts. The 25 mm diameter matches the standard plate size.
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 R 57950 profile.
GOST R 57950 specimen dimensions
The die is cut to the nominal profile in GOST R 57950: diameter 25 mm, typical gap / thickness 1-2 mm and angular frequency range ~0.01 to 100 rad/s. Always check your current edition of the standard for tolerances and the test procedure.
Where it is used
Typical uses for GOST R 57950 specimens include polymer melt flow characterization, resin batch comparison, processing window studies and recycled material evaluation.
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 R 57950 Cutting Die Specifications
STANDARD
GOST R 57950
SPECIMEN
Rheometer disc
SPECIMEN TYPE
Oscillatory rheometry specimen
DIAMETER
25 mm
TYPICAL GAP / THICKNESS
1-2 mm
ANGULAR FREQUENCY RANGE
~0.01 to 100 rad/s
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
(hardened) · UGC-CDR-GOSTR57950 (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
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-GOSTR57950)
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 R 57950 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 R 57950 — Plastics - Determination of dynamic mechanical properties - Part 10: Complex shear viscosity using a parallel-plate oscillatory rheometer
Compatible Grips & Fixtures
Arbor press — Benchtop press for cutting rheometer Disc 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”
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GOST R 57950 Cutting Die FAQ
What is the GOST R 57950 test used for?
Disc specimens are loaded between parallel plates and oscillated to measure complex shear viscosity and moduli of polymer melts. The 25 mm diameter matches the standard plate size.
What are the GOST R 57950 specimen dimensions?
The die cuts the nominal GOST R 57950 profile: diameter 25 mm, typical gap / thickness 1-2 mm and angular frequency range ~0.01 to 100 rad/s. These values come from the standard; check your current edition for tolerances.
Hardened steel or ribbon steel: which GOST R 57950 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 GOST R 57950 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 R 57950 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.