Summary
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1.
Kh14G14N3T steel has an austenitic structure with a small amount of the α-phase; the amount of this phase is determined by the ratio between the ferrite and austenite-forming elements.
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2.
At room temperature Kh14G14N3T steel has a higher strength than Kh18N9T steel.
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3.
Kh14G14N3T steel can easily be welded by different methods and is recommended as a substitute for Kh18N9T steel in manufacturing welded apparatus subject to high pressures at temperatures as low as −196°C.
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4.
Preliminary cold working (up to 20%) increases the strength of the steel without impairing its ductility at low temperatures in any significant way.
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5.
The use of Kh14G14N3T steel in place of Kh18N9T steel makes it possible to decrease the use of nickel considerably and decrease the cost of the equipment.
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Literature cited
N. I. Kakhovskii and V. G. Fartushnyl, Avtomaticheskaya svarka (1962), No. 7.
L. M. Pevzner. Zavodskaya laboratoriya (1947), No. 9.
Additional information
All-Union Scientific Research and Design Institute of Machine Construction Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 12, pp. 19–24, December, 1965
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Chekmareva, P.P. Low-nickel austenitic KH14G14N3T steel. Met Sci Heat Treat 7, 796–799 (1966). https://doi.org/10.1007/BF00666968
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DOI: https://doi.org/10.1007/BF00666968