Electronic universal testing machine and hydraulic universal testing machine are two types of material mechanical performance testing equipment, which can achieve various mechanical tests such as tension, compression, bending, and shearing of materials. They have significant differences in driving mode, accuracy, and application scenarios.

1. Advantages of electronic universal testing machine
   High precision: Adopting servo motor closed-loop control, with high resolution of displacement and force values, suitable for high-precision testing (such as elastic modulus measurement).
   Wide speed range: Low speed can reach 0.01 mm/min, high speed can reach 500 mm/min.
   Clean and environmentally friendly: No hydraulic oil, avoiding pollution, suitable for clean laboratory environment.
   Multifunctionality: It can integrate multiple testing modes such as tension, compression, bending, and peeling.
2. Advantages of hydraulic universal testing machine
   Large tonnage capacity: can easily reach over 2000 kN, suitable for testing heavy materials such as steel bars and concrete beams.
   High rigidity structure: The hydraulic cylinder has strong load-bearing capacity and is suitable for destructive testing of high hardness materials.
   Low cost (large tonnage): Under the same load, hydraulic presses are cheaper than electronic presses.
3. How to choose
   Choose electronic universal testing machine:
   (1) High precision is required (such as in scientific research and quality inspection laboratories).
   (2) Test small samples (such as metal foil, plastic film).
   (3) Require a wide speed range or clean environment.
   Choose hydraulic universal testing machine:
   (1) Test large tonnage materials such as steel bars, concrete, and large structural components.
   (2) The budget is limited and does not require extremely high precision.
   (3) Only static strength testing (such as compression and bending resistance) is required.