
1 1/2 Nickel turnings scrap (typically corresponding to 1.5 percent nickel low-alloy steel turnings, swarf, and lathe borings) consists of loose or compacted spiral metal turnings generated during the machining, drilling, and turning of low-alloy nickel steel components. Sourced primarily from automotive gear manufacturing, heavy machinery drive shafts, and general engineering workshops, this scrap is processed in metallurgical recycling to recover iron and nickel content economically.
Chemical Composition Range
Nickel: 1.25 to 1.75 percent
Manganese: 0.40 to 0.90 percent
Carbon: 0.15 to 0.45 percent
Silicon: 0.15 to 0.35 percent
Chromium: 0.30 to 0.80 percent (variable depending on source alloy)
Molybdenum: 0.15 to 0.30 percent (variable depending on source alloy)
Phosphorus: 0.035 percent maximum
Sulfur: 0.040 percent maximum
Iron: Balance
Physical Properties and Condition
Physical Form: Loose spiral turnings, small curls, fine swarf, and lathe borings; frequently processed through oil centrifuges or compressed into hydraulic briquettes.
Cleanliness Standard: Clean, dry material free from excessive cutting fluids, water emulsions, grinding dust, heavy oxidation, cast iron borings, and non-ferrous contaminants.
Solid Density: 7.85 grams per cubic centimeter.
Bulk Density: 0.8 to 1.5 metric tons per cubic meter in loose form; 3.0 to 4.5 metric tons per cubic meter when compressed into dense briquettes.
Magnetic Property: Strongly magnetic.
Melting Point Range: 1420 to 1500 degrees Celsius.
Industrial Applications
Electric Arc Furnace Charging: Serves as a low-cost scrap addition to Electric Arc Furnaces, typically charged in briquetted form to minimize oxidation loss and stack entrainment.
Briquetting Operations: Processed through de-oiling centrifuges and high-pressure hydraulic briquetting presses to produce high-density pucks for induction furnace melt operations.
Secondary Metallurgy Additive: Used in ladle refining and foundry melt operations to supplement nickel and iron levels economically without relying on virgin pure nickel.
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