Stress corrosion cracking is a brittle fracture phenomenon that occurs in materials under the combined action of tensile stress and specific corrosive media. It has strong concealment and is prone to safety accidents. Stress corrosion testing machines are key equipment for evaluating the stress corrosion resistance performance of materials and revealing failure mechanisms, and are widely used in various fields such as aerospace, petrochemicals, and nuclear power.

The core of this device is to simulate the stress and corrosion coupling environment in the actual service of materials. By accurately applying a constant load or strain, combined with a controllable corrosion medium system, the crack initiation, propagation, and fracture process of materials can be observed, and the sensitivity of materials can be quantitatively or qualitatively evaluated. Common types include constant load, constant strain, and slow strain rate testing machines. Among them, slow strain rate testing machines can quickly detect slight corrosion tendencies of materials by the synergistic effect of low-speed stretching and corrosive media, improving detection efficiency.

High quality equipment has precise load control, stable medium environment regulation, and efficient data acquisition capabilities. It can adapt to various corrosive media such as NaCl solution and H ₂ S, and meet various standard requirements such as GB/T and ASTM. Its performance directly determines the reliability of material testing data, providing scientific basis for new material research and development, engineering component life prediction, and equipment safety assessment, helping various industries improve product reliability and avoid corrosion related safety risks.