steel

1. An alloy of iron with small amounts of carbon;
   Widely used in construction;
   Mechanical properties can be varied over a wide range (synset 114826620)
   is a type of: alloy, metal - a mixture containing two or more metallic elements or metallic and nonmetallic elements usually fused together or dissolving into each other when molten
   subtypes:

   • alloy steel - steel who characteristics are determined by the addition of other elements in addition to carbon
   • austenitic steel - steel that has enough nickel and chromium or manganese to retain austenite at atmospheric temperatures
   • case-hardened steel - steel with a surface that is much harder than the interior metal
   • carbon steel - steel whose characteristics are determined by the amount of carbon it contains
   • crucible steel - steel made by the mixture of molten wrought iron, charcoal, and other substances in a crucible
   • damascus steel, damask steel - a hard resilient steel often decorated and used for sword blades
   • chisel steel - steel used in making chisels
   • hard steel - steel with more than 0.3% carbon
   • medium steel - steel with 0.15-0.3% carbon
   • low-carbon steel, mild steel, soft-cast steel - steel with less than 0.15% carbon
   • quenched steel - steel that has been hardened by immersing it in water or oil to cool it
   • structural steel - a strong steel that is rolled into shapes that are used in construction
   substance holonym:

   • atomic number 26, fe, iron - a heavy ductile magnetic metallic element; is silver-white in pure form but readily rusts; used in construction and tools and armament; plays a role in the transport of oxygen by the blood
   • pearlite - a lamellar mixture of cementite and ferrite formed during the cooling of austenite; a constituent of steel and cast iron
2. A cutting or thrusting weapon that has a long metal blade and a hilt with a hand guard (synset 104380981)
   is a type of: arm, weapon, weapon system - any instrument or instrumentality used in fighting or hunting
   subtypes:

   • backsword - a sword with only one cutting edge
   • broadsword - a sword with a broad blade and (usually) two cutting edges; used to cut rather than stab
   • cavalry sword, saber, sabre - a stout sword with a curved blade and thick back
   • cutlas, cutlass - a short heavy curved sword with one edge; formerly used by sailors
   • falchion - a short broad slightly convex medieval sword with a sharp point
   • fencing sword - a sword used in the sport of fencing
   • rapier, tuck - a straight sword with a narrow blade and two edges
   specific instances: excalibur - the legendary sword of King Arthur
   has:

   • blade - the flat part of a tool or weapon that (usually) has a cutting edge
   • foible - the weaker part of a sword's blade from the forte to the tip
   • forte - the stronger part of a sword blade between the hilt and the foible
   • haft, helve - the handle of a weapon or tool
   • hilt - the handle of a sword or dagger
   • peak, point, tip - a V shape
   same as: blade, brand, sword
3. Knife sharpener consisting of a ridged steel rod (synset 104318042)
   is a type of: sharpener - any implement that is used to make something (an edge or a point) sharper

1. Get ready for something difficult or unpleasant (synset 201810238)
   is a type of: brace, poise - prepare (oneself) for something unpleasant or difficult
   same as: nerve
2. Cover, plate, or edge with steel (synset 201617811)
   is a type of: cover - provide with a covering or cause to be covered

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