Conclusion
In types Kh7G28 and Kh7G32 steels the carbon content must be limited to ∼0.06% since an increase in it to 0.2% leads to a sharp drop in plasticity at cryogenic temperatures.
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Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 1, pp. 23–25, January, 1991.
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Suvorova, S.O., Grikurov, G.N., Sarrak, V.I. et al. Mechanical properties of types Kh7G28 and Kh7G32 steels. Met Sci Heat Treat 33, 38–41 (1991). https://doi.org/10.1007/BF00775033
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DOI: https://doi.org/10.1007/BF00775033