How to distinguish the material of the crimping structure for plug-in terminal blocks?

For plug-in terminal blocks, especially for 5.0/5.08 spacing terminal blocks, they are actually two common types in the market. One of them is a copper wire , which is also a common copper product in our industry; Another way to put it is iron pressed wire s, which are a product of iron or semi copper. If the wiring terminal itself is imported, it actually exists as an imported product. Originally, we only needed a product with one type of copper, and for localization, if it is to meet the diverse needs of our domestic and international markets, or directly for cost considerations, then iron products will also emerge. In most low-voltage environments, the difference between the two products is not significant in terms of usage. This may result in some of our wiring terminals being directly danced or being used incorrectly. For power and signal transmission components, if we make incorrect choices or use our wiring terminals, there is a high possibility of significant hidden dangers, which could result in significant losses. Here, we need to make a good judgment on the material of the wiring terminals. Firstly, we need to judge the material of the wiring terminal from its appearance, directly disassemble it, and then observe the shape of the wire pressing , which should correspond to its various wire pressing s; Furthermore, if we are to distinguish the material of the terminal wire pressing structure, we can also use a magnet attraction test. The iron wire that can be attracted is the copper wire that cannot be attracted.