Japanese Standard (5)

   STKM13A is a Japanese brand, equivalent to Q275 in China

  It has high strength, good plasticity and cutting performance, and certain welding performance. Small parts can be hardened and strengthened.

  In general, there is no hardness requirement, only strength requirement, tensile strength (b/MPa): 490-630

  Generally, 20 steel or 20Mn is used instead. If it is an important component, it is recommended to compare the mechanical properties and chemical composition of the two material samples.



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