nickel steel(n = noun.substance) - an alloy steel containing nickel;
is a kind of alloy steel

   A kind of cast steel containing nickel, which greatly increases its strength. It is used for armor plate, bicycle tubing, propeller shafts, etc. [Webster 1913 Suppl.]

alloy steel, austenitic manganese steel, austenitic steel, basic steel, bessemer steel, bronze steel, buffalo nickel, carbon steel, case-hardened steel, cast steel, cement steel, chisel steel, chrome steel, chrome-nickel steel, chrome-tungsten steel, chromium steel, crucible steel, damascus steel, damask steel, drill steel, eutectoid steel, hard steel, high steel, high-speed steel, hot-work steel, hyper-eutectoid steel, hypo-eutectoid steel, india steel, ingot steel, low steel, low-carbon steel, manganese steel, medium steel, mild steel, molybdenum steel, native steel, natural steel, nickel, nickel alloy, nickel bronze, nickel note, nickel silver, oil-hardened steel, open-hearth steel, phosphorus steel, quenched steel, shear steel, siemens-martin steel, soft steel, soft-cast steel, spring steel, stainless steel, steel, steel arch bridge, steel band, steel blue, steel company, steel drum, steel engraving, steel factory, steel gray, steel grey, steel guitar, steel industry, steel mill, steel oneself against, steel onself for, steel plant, steel plate, steel production, steel trap, steel wool, structural steel, tool steel, tungsten steel, vanadium steel, weld steel, wolfram steel