10 pin 3-2098269-1 Auto Pin Wire Cable Harness Auto Connector Housing Plug And Terminal 0.6 Series

2. High temperature softening resistance

High-temperature softening resistance refers to the ability to resist the reduction of material hardness (strength) in high-temperature environments. The working environment temperature of automotive connectors, especially in the engine compartment, is usually above 105°C and can reach hundreds of degrees Celsius in an instant. Therefore, this requires copper and copper alloy strips for automotive connectors to have excellent high-temperature softening properties, otherwise, the strength (hardness) of copper and copper alloy strips will be permanently and greatly reduced in high-temperature environments, thereby reducing the performance of connectors. reliability and service life.

This article lists the high temperature softening resistance properties of several typical copper and copper alloy strips at 500°C, as shown in Figure 5.

4. Anti-fatigue performance

Fatigue strength means that when the number of load cycles reaches a certain number, the sample still does not undergo fatigue fracture. The corresponding maximum stress at this time is the fatigue limit of the material.

This paper lists the fatigue ultimate strength of several typical copper and copper alloy strips under different bending times, as shown in Figure 8. 

It can be seen from Figure 8 that STOL76M, STOL94 and STOL95 still maintain high strength after millions of bending times.

As automobiles have increasingly stringent requirements for automotive connectors, when designing automotive connectors, it is necessary to consider the interrelation and interaction between material properties, design parameters, working environment and product performance throughout the product life cycle, so as to obtain The balance point of the design. Therefore, in the design and selection stage of copper and copper alloy strips, appropriate copper and copper alloy strips should be selected based on the design requirements of the automotive connector and the properties of copper and copper alloy strips.

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