Can you tell me what is the tensile strength of SK5? It is heat-treated, but other details are unknown. I would appreciate it if you could tell me the difference caused by the heat treatment. Thank you.
Thank you for your question!
If the spring is made of heat-treated material, the tensile strength will be approximately 1460 to 1700 N/mm^2.
In addition, when the spring is heat-treated after shaping, the tensile strength is determined by the hardness after the heat treatment. Even if there is a difference in the heat treatment method, the tensile strength is determined by the hardness after the heat treatment.
Thank you for your answer. Another question, is there no S-N diagram for fatigue stress? I tried to search but I could not find one. Can I use S-N diagrams (JIS B2709) for piano wires, etc.?
Hello!
■ Is there no S-N diagram for fatigue stress? → We have reference materials, so it would be greatly appreciated if you could visit the following URL. http://ad104z30zd.smartrelease.jp/consulting/
■ Can I use the S-N diagram (JIS B2709) of piano wire, etc.? →The fatigue strength diagram of JIS B2709 is a diagram of bending stress, so it can be used as a reference to estimate the service life of SK5 disc springs.
