The contact parts of the battery power adapter are generally alloy materials. Alloy is a substance with a variety of metals, indicating that it is composed of a variety of chemical elements. For example:

1. Phosphor bronze: copper, copper, tin, Sn, phosphorus, phosphorus, iron, lead, lead, zinc, zinc and other components, the main component is copper;

2, brass: copper Cu, iron Fe, lead Pb, zinc Zn and other components, the main component is copper;

3, stainless steel: by iron Fe, chromium Cr, nickel Ni, carbon C, silicon Si, manganese Mn, phosphorus P, sulfur S, aluminum Al, cobalt Co, the main component is iron.

What are the performance of the contact parts of the battery power adapter?

1. Yield strength, also known as yield strength, is the critical stress value of data yield. The so-called yield means that after reaching a certain deformation stress, the metal begins to transition from the elastic state to the elasto-plastic state, which marks the beginning of macroscopic plastic deformation. The influence of yield strength on the connector: the higher the metal data of yield strength is selected, the greater the positive force of the terminal is;

2. Tensile strength. When the data yield to a certain level, due to the rearrangement of internal grains, its resistance to deformation can be improved again. At this time, the deformation is indeed rapid, but it can only progress with the progress of stress, until the maximum stress. After that, the ability of the data to resist deformation is significantly reduced, and a large plastic deformation occurs at the thinest place, where the section of the specimen decreases rapidly, showing necking phenomenon, until fracture and destruction. The maximum stress (corresponding to point B) of the data before tensile fracture is called the ultimate strength or tensile strength.

3. Elongation refers to the percentage of the elongation length and the original length when the metal material is broken under the action of external force (tension);

4. Hardness. The ability of the data section to resist pressing a hard object against its surface is called hardness. Solid part of the invasion of external objects to resist the ability, is compared with a variety of data soft and hard indicators. Because all the metal data of the adapter is very thin, it is measured by Vickers hardness (HV). Vickers Hardness (HV) The Vickers Hardness (HV) value is obtained by pressing the data surface with a diamond square cone presser with a load of less than 120kg and a top Angle of 136° into it. The surface product of the data indentation pits is divided by the load value. Hardness is an important parameter for the material selection of the adapter.

5. R/T ratio. R (radius) means the inside diameter of the bend and T (thickness) means the thickness of the material. If you want to shape out of the product diameter is smaller, it is necessary to choose the R/T ratio is smaller data. Theoretically speaking, if R/T ratio is equal to zero, that is, the bending performance of this data is excellent, even if the inner R=0 of the bending, there will be no crack, but the ordinary data material proof or property table show are 90 degree bending data, rarely show 180 degree bending data. Of course, we want the R/T ratio to be as small as possible, which is beneficial to the miniaturization of battery connectors.