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2. Tool steel - Wikipedia

   en.wikipedia.org/wiki/Tool_steel

   Tool steel is any of various carbon steels and alloy steels that are particularly well-suited to be made into tools and tooling, including cutting tools, dies, hand tools, knives, and others. Their suitability comes from their distinctive hardness , resistance to abrasion and deformation, and their ability to hold a cutting edge at elevated ...

3. Shaft sinking - Wikipedia

   en.wikipedia.org/wiki/Shaft_sinking

   Shaft mining or shaft sinking is the action of excavating a mine shaft from the top down, where there is initially no access to the bottom. [1] Shallow shafts , typically sunk for civil engineering projects, differ greatly in execution method from deep shafts, typically sunk for mining projects.

4. Shaft (mechanical engineering) - Wikipedia

   en.wikipedia.org/wiki/Shaft_(mechanical_engineering)

   The material used for ordinary shafts is mild steel. When high strength is required, an alloy steel such as nickel, nickel-chromium or chromium-vanadium steel is used. Shafts are generally formed by hot rolling and finished to size by cold drawing or turning and grinding. [citation needed]

5. William Galloway (mining engineer) - Wikipedia

   en.wikipedia.org/wiki/William_Galloway_(mining...

   He also devised improved counterbalanced doors to cover the shaft top, speeding up operations and reducing the danger of injury to men, and damage to the shaft. He designed a steel bucket to carry the coal underground with wheels lubricated from hollow axle boxes and buffers, giving a smoother ride and lessening the amount of coal dust dropped ...

6. Shock-resisting steel - Wikipedia

   en.wikipedia.org/wiki/Shock-resisting_steel

   SVCM steel is a kind of shock-resisting steel. [5] SVCM steel is an alloy of carbon, silicon, chromium, magnesium, nickel, molybdenum and lead. [6] SVCM+ in addition is quenched and tempered achieving a high hardness (HRC 59). [6] SCVM+ has better torsional properties than chromium-vanadium steel (Cr-V). [7]

7. List of blade materials - Wikipedia

   en.wikipedia.org/wiki/List_of_blade_materials

   A variety of blade materials can be used to make the blade of a knife or other simple edged hand tool or weapon, such as a sickle, hatchet, or sword.The most common blade materials are carbon steel, stainless steel, tool steel, and alloy steel.