Table 2.--Magnesium recovered from scrap processed in the United States, by kind of scrap and form of recovery (Metric tons) ---------------------------------------------------------------------------------------------------------- 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 ---------------------------------------------------------------------------------------------------------- KIND OF SCRAP New scrap: Magnesium-base-------------------- 3,381 2,295 3,579 2,998 3,368 2,811 3,048 2,068 2,788 2,884 Aluminum-base--------------------- 1,487 1,552 1,766 1,535 1,797 1,879 2,029 1,500 1,910 2,563 ---------------------------------------------------------------------- Total-------------------------- 4,868 3,847 5,345 4,533 5,165 4,690 5,077 3,568 4,698 5,447 ---------------------------------------------------------------------- Old scrap: Magnesium-base-------------------- 4,868 5,914 4,893 2,433 3,561 4,230 3,946 3,770 3,749 3,230 Aluminum-base--------------------- 720 651 585 518 569 632 645 561 706 711 ---------------------------------------------------------------------- Total-------------------------- 5,588 6,565 5,478 2,951 4,130 4,862 4,591 4,331 4,455 3,941 ---------------------------------------------------------------------- Grand total--------------- 10,456 10,412 10,823 7,484 9,295 9,552 9,668 7,899 9,153 9,388 ---------------------------------------------------------------------- FORM OF RECOVERY Magnesium alloy ingot1/------------- 5,136 5,816 6,087 3,249 3,032 3,694 3,810 2,700 3,521 3,473 Magnesium alloy castings------------ 1,519 650 396 262 232 187 68 71 199 94 Magnesium alloy shapes-------------- 23 1 3 3 4 5 -- 3 2 3 Aluminum alloys--------------------- 3,078 2,741 2,824 2,360 2,700 2,892 3,069 2,450 3,181 2,910 Zinc and other alloys--------------- 50 36 4 7 43 77 20 27 19 49 Chemical and other dissipative uses- 92 13 78 2 1 10 26 48 544 231 Cathodic protection----------------- 558 1,155 1,431 1,601 3,283 2,687 2,675 2,600 1,687 2,628 ---------------------------------------------------------------------- Total-------------------------- 10,456 10,412 10,823 7,484 9,295 9,552 9,668 7,899 9,153 9,388 ---------------------------------------------------------------------- 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 ---------------------------------------------------------------------- KIND OF SCRAP New scrap: Magnesium-base-------------------- 1,728 4,263 3,795 4,087 5,720 5,862 4,592 6,356 4,325 4,140 Aluminum-base--------------------- 1,361 1,606 2,584 2,882 3,305 3,744 3,870 4,581 5,182 4,262 ---------------------------------------------------------------------- Total-------------------------- 3,089 5,869 6,379 6,969 9,025 9,606 8,462 10,937 9,507 8,402 ---------------------------------------------------------------------- Old scrap: Magnesium-base-------------------- 3,865 2,377 1,043 2,720 2,025 3,013 2,697 1,917 1,542 1,377 Aluminum-base--------------------- 417 472 947 1,007 1,303 1,106 1,037 1,230 1,171 1,145 ---------------------------------------------------------------------- Total-------------------------- 4,282 2,849 1,990 3,727 3,328 4,119 3,734 3,147 2,713 2,522 ---------------------------------------------------------------------- Grand total--------------- 7,371 8,718 8,369 10,696 12,353 13,725 12,196 14,084 12,220 10,924 ---------------------------------------------------------------------- FORM OF RECOVERY Magnesium alloy ingot1/------------- 989 1,007 2,020 2,608 1,939 4,719 3,411 2,270 2,931 1,820 Magnesium alloy castings------------ 327 590 366 34 13 24 35 14 10 12 Magnesium alloy shapes-------------- 317 177 68 45 53 64 93 74 135 171 Aluminum alloys--------------------- 1,733 1,678 3,483 4,053 7,209 5,746 5,586 8,981 7,600 6,430 Zinc and other alloys--------------- 993 508 395 21 21 15 16 16 12 22 Chemical and other dissipative uses- 1,225 236 684 534 492 255 23 58 59 72 Cathodic protection----------------- 1,787 4,522 1,353 3,401 2,626 2,902 3,032 2,671 1,473 2,397 ---------------------------------------------------------------------- Total-------------------------- 7,371 8,718 8,369 10,696 12,353 13,725 12,196 14,084 12,220 10,924 ------------------------------------ See footnotes at end of table. Table 2.--Magnesium recovered from scrap processed in the United States, by kind of scrap and form of recovery--Continued (Metric tons) ---------------------------------------------------------------------------------------------------------- 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 ---------------------------------------------------------------------------------------------------------- KIND OF SCRAP New scrap: Magnesium-base-------------------- 6,098 6,344 6,729 3,045 3,698 2,574 3,051 4,204 4,559 5,379 Aluminum-base--------------------- 4,389 5,122 5,550 5,260 12,713 14,684 15,247 15,877 16,615 15,402 ---------------------------------------------------------------------- Total-------------------------- 10,487 11,466 12,279 8,305 16,411 17,258 18,298 20,081 21,174 20,781 ---------------------------------------------------------------------- Old scrap: Magnesium-base-------------------- 1,559 1,311 2,294 3,775 4,421 4,990 4,767 5,009 4,334 4,785 Aluminum-base--------------------- 1,292 1,400 1,426 1,413 4,454 5,469 6,595 7,775 8,259 11,140 ---------------------------------------------------------------------- Total-------------------------- 2,851 2,711 3,720 5,188 8,875 10,459 11,362 12,784 12,593 15,925 ---------------------------------------------------------------------- Grand total--------------- 13,338 14,177 15,999 13,493 25,286 27,717 29,660 32,865 33,767 36,706 ---------------------------------------------------------------------- FORM OF RECOVERY Magnesium alloy ingot1/------------- 3,543 3,277 2,364 2,452 2,567 3,238 3,434 3,875 3,392 3,815 Magnesium alloy castings------------ 13 8 11 13 680 758 779 867 717 758 Magnesium alloy shapes-------------- 453 249 153 4 1,145 304 846 1,732 1,974 2,852 Aluminum alloys--------------------- 6,734 7,974 8,352 8,451 18,441 21,405 22,871 24,767 26,178 26,864 Zinc and other alloys--------------- 15 13 28 14 11 14 19 17 12 12 Chemical and other dissipative uses- 434 720 514 40 40 25 39 44 43 8 Cathodic protection----------------- 2,146 1,936 4,577 2,519 2,432 1,973 1,672 1,563 1,451 2,397 ---------------------------------------------------------------------- Total-------------------------- 13,338 14,177 15,999 13,493 25,316 27,717 29,660 32,865 33,767 36,706 ---------------------------------------------------------------------- 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 ---------------------------------------------------------------------- KIND OF SCRAP New scrap: Magnesium-base-------------------- 2,570 2,227 2,606 2,896 1,510 991 845 2,641 3,951 3,992 Aluminum-base--------------------- 17,454 15,736 16,981 16,694 16,252 17,822 20,867 19,926 19,278 19,464 ---------------------------------------------------------------------- Total-------------------------- 20,024 17,963 19,587 19,590 17,762 18,813 21,712 22,567 23,229 23,456 ---------------------------------------------------------------------- Old scrap: Magnesium-base-------------------- 5,074 4,821 4,818 4,746 4,630 3,958 3,857 3,882 4,269 4,277 Aluminum-base--------------------- 16,865 16,435 17,624 19,533 18,906 19,036 19,595 23,758 23,702 26,796 ---------------------------------------------------------------------- Total-------------------------- 21,939 21,256 22,442 24,279 23,536 22,994 23,452 27,640 27,971 31,073 ---------------------------------------------------------------------- Grand total--------------- 41,963 39,219 42,029 43,869 41,298 41,807 45,164 50,207 51,200 54,529 ---------------------------------------------------------------------- FORM OF RECOVERY Magnesium alloy ingot1/------------- 3,838 3,835 3,839 3,837 3,838 3,925 4,001 3,930 4,494 4,290 Magnesium alloy castings------------ 731 677 864 889 438 551 447 438 795 857 Magnesium alloy shapes-------------- 12 -- -- -- -- 31 -- 1,065 635 301 Aluminum alloys--------------------- 35,158 33,191 35,789 37,260 35,797 37,293 40,711 43,827 43,125 46,528 Zinc and other alloys--------------- 8 10 18 11 8 3 W W W W Chemical and other dissipative uses- 50 3 4 8 3 W W 943 W W Cathodic protection----------------- 2,166 1,503 1,515 1,864 1,214 W -- W W W ---------------------------------------------------------------------- Total-------------------------- 41,963 39,219 42,029 43,869 41,298 41,807 45,164 50,207 51,200 54,529 ---------------------------------------------------------------------------------------------------------- W Withheld to avoid disclosing company proprietary data; included in "FORM OF RECOVERY: Total." 1/Includes secondary magnesium content of both secondary and primary alloy ingot.