|
| TABLE 4 | ||||||||||||||
| REPORTED CONSUMPTION, BY END USE, AND STOCKS OF SILICON FERROALLOYS AND METAL IN THE | ||||||||||||||
| UNITED STATES IN 20151, 2 | ||||||||||||||
| (Metric tons, gross weight) | ||||||||||||||
| Silvery | Ferrosilicon, | Ferrosilicon, | Silicon | Miscellaneous | Silicon | |||||||||
| End use | pig iron3 | 50%4 | 75%5 | metal6 | silicon alloys7 | carbide8 | ||||||||
| Steel: | ||||||||||||||
| Carbon and high-strength, low-alloy | (9) | (10) | 34,500 | (10) | (10) | (10) | ||||||||
| Stainless and heat-resisting | -- | (10) | 44,700 | 286 | (10) | (10) | ||||||||
| Full alloy | -- | (10) | 8,880 | (10) | (10) | -- | ||||||||
| Electric steel | -- | -- | (10) | -- | -- | (10) | ||||||||
| Electric and tool | -- | -- | (10) | -- | -- | -- | ||||||||
| Unspecified | -- | 47,900 | 32,700 | 1,310 | 2,890 | 5,620 | ||||||||
| Total | -- | 47,900 | 121,000 | 1,600 | 2,890 | 5,620 | - | |||||||
| Cast irons | 14,400 | 18,600 | 21,100 | (11) | 9,720 | 17,400 | ||||||||
| Superalloys | -- | -- | (12) | 37 | -- | -- | ||||||||
| Welding | -- | (12) | -- | (11) | -- | -- | ||||||||
| Wear and corrosion | -- | (12) | (12) | (11) | (9) | -- | ||||||||
| Aluminum | -- | -- | (12) | (11) | -- | (9) | ||||||||
| Copper | -- | -- | -- | (11) | -- | -- | ||||||||
| Nickel | -- | -- | (12) | (11) | (9) | -- | ||||||||
| Tungsten | -- | -- | -- | (11) | -- | -- | ||||||||
| Other alloy | -- | -- | -- | -- | (9) | -- | ||||||||
| Chemical carbides | -- | -- | -- | -- | (9) | -- | ||||||||
| Alloys, excluding superalloys and alloy steel | -- | -- | -- | 27,800 | 13 | -- | -- | |||||||
| Miscellaneous and unspecified | -- | 1,320 | 275 | W | 14 | (9) | -- | |||||||
| Grand total | 14,400 | 67,800 | 142,000 | W | 12,600 | 23,000 | - | |||||||
| Consumers- stocks, December 31 | 170 | 897 | 8,640 | 12,700 | 541 | 922 | - | |||||||
| W Withheld to avoid disclosing company proprietary data. -- Zero. | ||||||||||||||
| 1Data are rounded to no more than three significant digits; may not add to totals shown. | ||||||||||||||
| 2Includes U.S. Geological Survey estimates. | ||||||||||||||
| 3Typically 18% silicon content but ranges between 5% to 24% silicon content. | ||||||||||||||
| 4Typically 48% silicon content but ranges between 25% to 55% silicon content; includes briquets. | ||||||||||||||
| 5Typically 76% silicon content but ranges between 56% to 95% silicon content; includes briquets. | ||||||||||||||
| 6Typically 98% silicon content but ranges between 96% to 99% silicon content. | ||||||||||||||
| 7Typically 48% silicon content. Primarily magnesium-ferrosilicon but also includes other silicon alloys. | ||||||||||||||
| 8Typically 64% silicon content but ranges between 63% to 70% silicon content. Does not include silicon carbide for abrasive or- | ||||||||||||||
| refractory uses. | ||||||||||||||
| 9Included with -Cast irons- to avoid disclosing company proprietary data. | ||||||||||||||
| 10Included with -Steel: Unspecified- to avoid disclosing company proprietary data. | ||||||||||||||
| 11Included with -Alloys, excluding superalloys and alloy steel- to avoid disclosing company proprietary data. | ||||||||||||||
| 12Included with -Miscellaneous and unspecified- to avoid disclosing company proprietary data. | ||||||||||||||
| 13Primarily aluminum alloys. | ||||||||||||||
| 14Primarily silicones and other chemicals. | ||||||||||||||
Source: United States Geological Survey Mineral Resources Program
See also: Mineral commodity prices
