However, in 1972, titanium bar this growth interruption at least two years. At present, titanium bar industrial production is expected to at least more than the highest open that year dropped 20%. USA cancelled a large number of planned manufacturing titanium rods of supersonic aircraft, the UK, France and the Soviet Union also design and manufacture of speed is about 2 Maher supersonic aircraft to reduce the amount of titanium. After the rapid development of 60 years of the twentieth Century, the largest commercial aircraft titanium market entered rectify consolidation period.
到1974年，又达到了新的高峰。随后经过三年，在]976年又陈到了最低点。而此后在1979年到1980年，由于另外一些需求的增长又使人们对钛棒短缺的担心达到顶点，从而导致了扩大海绵钛的生产计划。由于无法准确预测将来的需要量，因此，将来完全有可能还会再钛出现生产过剽或供应不足的现象，这种“繁荣和萧条”足不可避免的。在经历“萧条”期后幸厅下来的那部分工业对较长期的研究和开发进行投资，自然就持谨慎和犹豫的态度。有繁荣期，钛的棒价格猛涨，促若交货期长，就会妨害钛在新的特殊应用领域小及时地进行有效的竞争，从而影响有关技术全面发展的速度。
By 1974, and reached a new peak. Then after three years, in the]976 years old to the lowest point. And then in 1980 to 1979, due to some other demand growth and make people worried about the shortage of titanium bar peaked, which led to the expansion of titanium sponge production plan. Unable to accurately predict the future demand, therefore, the future is likely to appear too nimble titanium production or supply shortage, the "boom and bust" is inevitable. Fortunately the industrial hall down to a long-term research and development investment in the experience of "depression" period, naturally cautious and hesitant attitude. A period of prosperity, titanium bar prices soared, and if a long delivery time, will hinder titanium small timely and effective competition in the new fields of application, thus affecting the relevant technical development speed.