Atmospheric corrosion resistance of steels prepared from the magnetic fraction of urban refuse.
Cramer-SD; Carter-JP; Covino-BS Jr.
Avondale, MD: U.S. Department of the Interior, Bureau of Mines, RI 8447, 1980 Jan; :1-32
The Bureau of Mines conducted a study in which the magnetic fraction of urban refuse was used as melting stock in the preparation of high- strength, low-alloy and carbon steel. Product steels, made from incinerated steel can scrap, nonincinerated-nondetinned steel can scrap, nonincinerated-detinned steel can scrap, and dilutions of these scraps with No. 1 Heavy melting scrap, were used in continuing tests in industrial, rural, and marine environments to determine the effect of residual elements and atmospheric pollutants on their atmospheric corrosion resistance. The respective commercial steels were exposed at the same time to establish baseline corrosion data for the test sites. Weight-loss data are reported for atmospheric exposures of 0.5, 1.0, 1.5, and 3.8 Years. The marine environment was the most corrosive; the industrial environment was the least corrosive. The atmospheric corrosion resistance of the carbon steel was improved 25 pct by using incinerated scrap and nonincinerated- nondetinned scrap in the steelmaking process. In no case was the atmospheric corrosion resistance of carbon steel degraded by using the magnetic fraction of urban refuse as melting stock. The presence of sulfur in the corrosion film was the most important factor affecting the corrosion resistance of the steels. With increasing sulfur concentration, the rate of the corrosion reaction was reduced and the corrosion film became more protective. The residual elements in the product steels most responsible for improving corrosion resistance were copper and tin.
Atmospheric corrosion; Carbon steels; Corrosion resistance; High strength steels; Low alloy steels; Metal scrap; Refuse; Steel making; Steels; Utilization
IH; Report of Investigations
NTIS Accession No.
Avondale, MD: U.S. Department of the Interior, Bureau of Mines, RI 8447