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XJU series Dial IZOD Impact Tester ISO 180 ASTM D256

Notched Izod Impact is a single point test that measures a materials resistance to impact from a swinging pendulum. Izod impact is defined as the kinetic energy needed to initiate fracture and continue the fracture until the specimen is broken. Izod specimens are notched to prevent deformation of the specimen upon impact. This test can be used as a quick and easy quality control check to determine if a material meets specific impact properties or to compare materials for general toughness.

United Test product both the IZOD and Charpy impact tester, in dial display, LCD screen display and computer control used determine the impact ductility of nonmetallic materials, such as Rigid thermoplastic and thermosetting plastic, thermosetting plastic and thermoplastic after fiber-reinforced. It is widely used in the industries of plastic products, plastic manufacture, petro chemical etc, University, scientific research institute and commodity inspection department.

Charpy Test: The specimen is mounted horizontally and supported unclamped at both ends. The hammer is released and allowed to strike through the specimen. If breakage does not occur, a heavier hammer is used until failure occurs. 
IZOD Test: The specimen is clamped into the pendulum impact test fixture with the notched side facing the striking edge of the pendulum. The pendulum is released and allowed to strike through the specimen. If breakage does not occur, a heavier hammer is used until failure occurs. Since many materials (especially thermoplastics) exhibit lower impact strength at reduced temperatures, it is sometimes appropriate to test materials at temperatures that simulate the intended end use environment. 

Feature of XJU series IZOD impact testing machine:
1, Dial display, Izod Test model;
2, This economical model is simple in structure, easy to operate.
3, Support vice, pendulum is nickel coating, good appearance and anti-corrosion.
4, Standard ISO 180, ASTM D256

 Plastic V notch impact sample 80*10*4mm             Organic glass V notch impact sample 80*10*4mm

Impact energy1J, 2.75, 5.5J5.5J, 11J, 22J
Impact speed3.5m/s3.5m/s
Pendulum center to impact blade distance322mm322mm
Distance from impact blade to upper surface22mm22mm
Blade angle radiusR=0.8mmR=0.8mm
Pendulum initial angle160°160°
Display typeDial analog display
Specimen clamping typeIZOD
Standard AccessoriesLoadframe, pendulum(1J, 5.5J), pendulum weight (2.75J), vice adjusting plate, spanner, manual etc.Loadframe, pendulum(5.5J, 11J, 22J), vice, impact standard plate, spanner, manual etc.

supporting vice jaws,
specimen centering plate,
manual etc.

ISO 179: “Plastics -- Determination of Charpy impact properties”

ASTM D6110: “Standard Test Method for Determining the Charpy Impact Resistance of Notched Specimens of Plastics”

ISO 180: “Plastics -- Determination of Izod impact strength”

ASTM D256: “Standard Test Methods for Determining the Izod Pendulum Impact Resistance of Plastics”

ISO 9854: “Thermoplastics pipes for the transport of fluids -- Determination of pendulum impact strength by the Charpy method”

ISO 8256: "Plastic Stretch Impact Intensity Determination" (method A)

ASTM D1822: "Plastic And Electric insulation Material Stretch Impact Performance test Method".


install impact pendulum video
install impact specimen, IZOD impact test procedure operation video
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