Information on the most widely used ASTM standards within the materials testing industry
Model: JBS-300B, JBS-500B
JBS-300B Pendulum impact testing machine features an electric pendulum lift that automatically returns after impact, making it particularly suitable for batch and continuous testing. The main unit is designed strictly in accordance with the national standard GB/T3808-2002 "Inspection of Pendulum Impact Testing Machines" and conducts impact tests on metal materials according to the national standard "Charpy Impact Test Method for Metals."
The test specimen has a cross-section of 10×10mm and is mainly used for testing ferrous metals, especially steel and its alloys, with relatively high impact toughness. This machine uses a cantilever beam structure to enhance the rigidity of the impact tester, ensuring the accuracy of test data and significantly extending the service life of the machine.
The machine is equipped with an axial positioning device, offering advantages such as simple specimen placement, high operational efficiency, high positioning accuracy, and reliable readings, making it particularly suitable for conducting cold impact tests in conjunction with an impact test low-temperature tank. The machine operates on a three-phase, four-wire 380V power supply.
It is designed and developed according to standard of ISO148, ASTM E23.
General Introduction
JBS-300B Pendulum impact testing machine features an electric pendulum lift that automatically returns after impact, making it particularly suitable for batch and continuous testing. The main unit is designed strictly in accordance with the national standard GB/T3808-2002 "Inspection of Pendulum Impact Testing Machines" and conducts impact tests on metal materials according to the national standard "Charpy Impact Test Method for Metals."
The test specimen has a cross-section of 10×10mm and is mainly used for testing ferrous metals, especially steel and its alloys, with relatively high impact toughness. This machine uses a cantilever beam structure to enhance the rigidity of the impact tester, ensuring the accuracy of test data and significantly extending the service life of the machine.
The machine is equipped with an axial positioning device, offering advantages such as simple specimen placement, high operational efficiency, high positioning accuracy, and reliable readings, making it particularly suitable for conducting cold impact tests in conjunction with an impact test low-temperature tank. The machine operates on a three-phase, four-wire 380V power supply.
It is designed and developed according to standard of ISO148, ASTM E23.

According to ISO 148, standard specimen sizes are 10 mm × 10 mm × 55 mm. Subsize specimens are: 10 mm × 7.5 mm × 55 mm, 10 mm × 5 mm × 55 mm and 10 mm × 2.5 mm × 55mm.
ASTM E23 “Standard Test Methods for Notched Bar Impact Testing of Metallic Materials”
ISO 148 “Metallic materials -- Charpy pendulum impact test”
BS EN 10045 “Charpy impact test on metallic materials. Test method (V- and U-notches)”
GOST 9454 “Metals. Method for testing the impact strength at the low, room and high temperature”
Key Features
1), Pendulum rising, impact, free releasing is realized as automatically by micro control meter or remote control box;
2), Safety pin guaranties the impact action, standard protection shell to avoid any accident
3), With two pendulums (big and small), digital display the energy loss, impact tenacity, rising angle, and test average value, meantime the dial scale show test result as well.
4), With two pendulums (big and small) and corresponding two Dial scales to read test result.
5), Built-in micro printer to print test result.
1). Operating Language Model: Chinese/English, switch freely between Chinese and English except Print interface
2). Automatic taking pendulum: first time taking pendulum by hand, after taking pendulum, the impact tester will taking pendulum again. The display area will display test result when each testing is finished. In groups of three tests, One group is finished, the average value of three impact tests can be available. New group test will be done after restarting
3). Store function: 100 test data will be stored, including test name, original test value, average value, test time etc
4). Print function: the present data and past data can be stored by USB, invented print the picture
5). Alarming functions: when the impact tester have trouble, touch screen will display and provide handing method.
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| Test result interface | Main interface |
Main Technical Specification
| Model | JBS-300B (JBS-300Z) | JBS-500B (JBS-500Z) | JBS-750B (JBS-750Z) |
| Display mode | Touching Screen | ||
| Impact energy | 300J/150J | 500J/250J | 750J |
| Distance between pendulum center to impact point | 750mm | 800mm | 750mm |
| Impact velocity | 5.2m/s | 5.4m/s | 5.24 m/s |
| Pendulum preparing angle | 150º | ||
| Span of specimen seat | 40+0.2mm | ||
| Round angle radius of Grips | R1-1.5mm | ||
| Round angle radius of striking edge | R2-2.5mm, R8±0.08mm | ||
| Angle of impact knife | 30° | ||
| Specimen size | 10 (7.5, 5, 2.5)mm*10mm*55mm | ||
| Power supply | 3 phases 4 lines, 50Hz, 380V | ||
| Weight | 600Kg | 900Kg | 2500Kg |
| *** JBS-Z series is fully automatic, with automatic sample feeding system. | |||
Main Accessories
| High Stiffness Frame | 1 set |
| Large pendulum 300J/500J | 1 set |
| Small pendulum 150J/250J | 1 set |
| Motor (on the loadframe) | 1 set |
| Rising pendulum driving device (on the loadframe) | 1 set |
| Automatic hitch pendulum device (on the loadframe) | 1 set |
| Safety pin (on the loadframe) | 1 set |
| Touching screen control box | 1 set |
| Micro-Printer | 1 set |
| Manual control box | 1 set |
| Supporting seat span adjusting device (L=40) | 1 set |
| Specimen center device ( L=40 V.U type) | 1 set |
| Safety cover | 1 set |
| Device to dismantle pendulum | 1 set |
| Terra anchor bolts (M16×300) | 1 set |
| Documents (Manual, packing list, certificate) | |
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