Steel plate applied to extremely low temperature environment
An extremely low temperature and environmental technology, applied in the field of iron and steel metallurgy, can solve the problems of insufficient strength, toughness and impact energy, etc., achieve good welding adaptability, improve low temperature impact toughness, and improve welding adaptability
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Embodiment 1
[0012] A steel plate used in an extremely low temperature environment, the chemical composition of the steel consists of the following components in terms of weight percentage: C: 0.03, Si: 0.30, Mn: 1.60, Ti: 0.030, Nb: 0.2, Cr: 1.2, Ni : 1.3, N: 0.05, S≤0.008, P≤0.005, the balance is Fe and unavoidable impurities.
Embodiment 2
[0014] A steel plate used in an extremely low temperature environment, the chemical composition of the steel consists of the following components in terms of weight percentage: C: 0.05, Si: 0.10, Mn: 1.80, Ti: 0.010, Nb: 0.4, Cr: 0.8, Ni : 1.5, N: 0.03, S≤0.008, P≤0.005, the balance is Fe and unavoidable impurities.
Embodiment 3
[0016] A steel plate used in an extremely low temperature environment, the chemical composition of the steel consists of the following components in terms of weight percentage: C: 0.035, Si: 0.25, Mn: 1.65, Ti: 0.025, Nb: 0.25, Cr: 1.1, Ni : 1.35, N: 0.045, S≤0.008, P≤0.005, the balance is Fe and unavoidable impurities.
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