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Temper brittleness of steel 30Kh2N2SMK5

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Metal Science and Heat Treatment Aims and scope

Conclusions

  1. 1.

    Steel 30Kh2N2SMK5 has little susceptibility to temper brittleness. The ductile-brittle temperature shifts by 30°C-from −60° (ductile condition) to −30°C (brittle condition).

  2. 2.

    The range of temper brittleness is 450–550°C; the temperature of maximum brittleness is ∼500°C.

  3. 3.

    The range of temper brittleness and the temperature of maximum embrittlement can be reliably determined by means of secondary tempering. The beginning of softening of the quenched and tempered steel after secondary tempering coincides with the upper limit of the temper brittleness range.

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Literature cited

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Authors
  1. P. N. Nikitin
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  2. E. M. Murav'eva
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  3. N. F. Rudnev
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  4. G. I. Elyutina
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Additional information

Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 7, pp. 51–54, July, 1978.

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Nikitin, P.N., Murav'eva, E.M., Rudnev, N.F. et al. Temper brittleness of steel 30Kh2N2SMK5. Met Sci Heat Treat 20, 573–575 (1978). https://doi.org/10.1007/BF00780340

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  • DOI: https://doi.org/10.1007/BF00780340

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