Rapid Identification of Stainless Steel and Superalloy Scrap.
Brown-RD Jr.; Riley-WD; Zieba-CA
Avondale, MD: U.S. Department of the Interior, Bureau of Mines, RI 8858, 1984 Jan; :1-23
This Bureau of Mines report describes a new methodology for identifying and sorting scrap metals using two modern portable instruments: a thermoelectric sorter and a hand-held emission spectroscope. The method, tested on a 27-sample stainless steel and superalloy array, makes it possible to group and/or identify a typical mixture of high-value metal scrap in two or three steps, whereas as many as seven or eight steps are needed to perform the same separations using chemical spot tests. A portable fluorescent X-ray analyzer identified 19 of the 27 alloys in the sample array by name or type; these alloys are included in the microprocessor memory. The remaining alloys were identified by using the analyzer in its elemental analysis mode and comparing the results with alloy specification chemistry.
Stainless-steels; Heat-resistant-alloys; Chemical-analysis; Metal-scrap; X-ray-analysis; X-ray-fluorescence; Portable-equipment
IH; Report of Investigations
NTIS Accession No.
Avondale, MD: U.S. Department of the Interior, Bureau of Mines, RI 8858