4340 steel is quenched and tempered steel typical chromium nickel. Because chromium and nickel cooperate, can make the hardenability of the steel is greatly improved, the cross-sectional area of less than 80mm of AISI 4340 round steel can be fully hardened when the oil quenching.
Nickel alloy elements do not form carbides. Nickel role is when the increase of the content, can increase the strength of steel, and has a good effect on the plasticity and toughness of steel, especially the low temperature impact toughness of high.
AISI 4340 steel adding chromium and nickel, in addition to enhance the effect of Cr, good effect can also keep nickel, obtain high mechanical properties of. The interaction of chromium and nickel, makes the hardenability of the steel increased much, far more than the role of a single element.
AISI 4340 steel while joining the 0.15%~0.25%Mo, in order to eliminate the sensitivity of steel on the temper brittleness, but adding quantity is not large, so the high temperature tempering still cooling in water or oil.
The above article from Songshunsteel official website (http://www.songshunsteel.com/)
The original address: http://www.songshunsteel.com/news_show_27_15_73.html, reproduced please specify. songblog1504
Nickel alloy elements do not form carbides. Nickel role is when the increase of the content, can increase the strength of steel, and has a good effect on the plasticity and toughness of steel, especially the low temperature impact toughness of high.
AISI 4340 steel adding chromium and nickel, in addition to enhance the effect of Cr, good effect can also keep nickel, obtain high mechanical properties of. The interaction of chromium and nickel, makes the hardenability of the steel increased much, far more than the role of a single element.
AISI 4340 steel while joining the 0.15%~0.25%Mo, in order to eliminate the sensitivity of steel on the temper brittleness, but adding quantity is not large, so the high temperature tempering still cooling in water or oil.
The above article from Songshunsteel official website (http://www.songshunsteel.com/)
The original address: http://www.songshunsteel.com/news_show_27_15_73.html, reproduced please specify. songblog1504
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