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High-strength steel for cryogenic temperatures

  • Steels and Alloys for Cryogenic Technology
  • Published:
Metal Science and Heat Treatment Aims and scope

Conclusions

  1. 1.

    Quenched martensitic steel 000Kh11N10M2T (EP 678) retains its high ductility down to −253°, determined on standard samples and samples with a started crack, and it has a low notch sensitivity. The combination of mechanical properties of this steel at −253° is better than that of steel 30KhGSNA at 20°.

  2. 2.

    Comparatively slow cooling from 980 to 700° during welding has a negligible effect on the plasticity of the steel, which is due to the small change in the solubility of the carbides in this temperature range.

  3. 3.

    Weldments not heat treated after welding have stable strength characteristics and completely ductile fractures down to −253°.

  4. 4.

    Steel 000Kh11N10M2T is a promising material for cyrogenic technology, since it has a high yield strength at 20° (∼90 kg/mm2) and good working capacity down to −253°.

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Literature cited

  1. P. F. Koshelev and S. E. Belyaev, Strength and Ductility of Structural Materials at Low Temperatures [in Russian], Mashinostroenie (1967).

  2. E. A. Ul'yanin, Metal. i Term. Obrabotka Metal., No. 10 (1966).

  3. P. F. Koshelev et al., Metal. i Term. Obrabotka Metal., No. 10 (1968).

  4. G. A. Bersenev et al., Metal. i Term. Obrabotka Metal., No. 6 (1968).

  5. K. A. Belyakova et al., Metal. i Term. Obrabotka Metal., No. 3 (1971).

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Authors
  1. E. A. Kagan
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  2. Ya. M. Potak
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  3. V. V. Sachkov
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  4. V. I. Kozlovskaya
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  5. G. N. Grikurov
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Additional information

All-Union Institute of Aviation Materials. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 10, pp. 18–20, October, 1971.

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Kagan, E.A., Potak, Y.M., Sachkov, V.V. et al. High-strength steel for cryogenic temperatures. Met Sci Heat Treat 13, 821–822 (1971). https://doi.org/10.1007/BF00713814

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  • DOI: https://doi.org/10.1007/BF00713814

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