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，又達到了新的高峰。隨后經過三年，在]976年又陳到了最低點。而此后在1979年到1980年，由于另外一些需求的增長又使人們對鈦棒短缺的擔心達到頂點，從而導致了擴大海綿鈦的生產計劃。由于無法準確預測將來的需要量，因此，將來完全有可能還會再鈦出現生產過剽或供應不足的現象，這種“繁榮和蕭條”足不可避免的。在經歷“蕭條”期后幸廳下來的那部分工業對較長期的研究和開發進行投資，自然就持謹慎和猶豫的態度。有繁榮期，鈦的棒價格猛漲，促若交貨期長，就會妨害鈦在新的特殊應用領域小及時地進行有效的競爭，從而影響有關技術全面發展的速度。
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.