Stainless steel seamless pipes and carbon steel seamless pipes are widely used in industry.
1. Stainless steel produces work hardening during cold working, such as anisotropy when bent, that is, the transverse and longitudinal properties are different. Cold working can be used to increase strength, but if the bending area is small relative to the total area and this increase is ignored, increasing strength can improve 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 small value stipulated 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 60.2 is used to represent the yield stress as a local value.
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