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Effect of chromium on the properties of high-strength steel 30N9K4MF

  • Structural Steels
  • Published:
Metal Science and Heat Treatment Aims and scope

Conclusions

  1. 1.

    Additional alloying of steel 30N9K4MF with chromium (up to 3%) increases its resistance to tempering, the hardenability, and the quench hardness.

  2. 2.

    The optimal Cr addition is 1–2%, ensuring a good combination of strength and toughness after oil quenching and high-temperature tempering (550°): σb > 155 kgf/mm3, σ0.2 ≥ 130 kgf/mm3, δ5 > 15%, ω>55%,a 1>7 kgf-m/cm2,a 1 −196=4–5 kgf-m/cm2,a 0.25=3.5–4.5 kgf-m/cm2,a p=2–3 kgf-m/cm2, T50=−140 to −165°.

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Literature cited

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Authors
  1. V. N. Zikeev
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  2. R. K. Guseinov
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Additional information

I. P. Bardin Central Scientific-Research Institute of Ferrous Metallurgy. Azerbaidzhan Polytechnic Institute. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 5, pp. 47–50, May, 1979.

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Zikeev, V.N., Guseinov, R.K. Effect of chromium on the properties of high-strength steel 30N9K4MF. Met Sci Heat Treat 21, 383–386 (1979). https://doi.org/10.1007/BF00780783

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  • DOI: https://doi.org/10.1007/BF00780783

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