The difference between stainless steel quick coupling and carbon steel quick coupling
The design rules of stainless steel quick coupling and carbon steel quick coupling are not universal. There are mainly the following 3 main differences, which are summarized as follows:
1. Stainless steel undergoes work hardening during cold working, for example, it has anisotropy during bending, that is, the transverse and longitudinal properties are different. The increased strength by cold working can be used, but if the bending area is small compared to the total area and this increase is neglected, the increased strength can increase the safety factor to a certain extent.
2. The shape of the stress/strain curve is different.
The elastic limit of stainless steel is about 50% of the yield stress. As far as the value specified in the standard is concerned, the yield stress value is lower than that of medium carbon steel.
3. Stainless steel has no yield point. Usually ó0.2 is used to indicate that the yield stress is regarded as an equivalent value.