air-hardened steel
31Armour — (or armor) is protective covering, most commonly manufactured from metals, to prevent damage from being inflicted to an individual or a vehicle through use of direct contact weapons or projectiles, usually during combat. While early armour tended …
32M18 Claymore mine — M18A1 Claymore mine The M18A1 Claymore mine with the plastic trigger and detonator wire Type Direction fragmentation anti personnel mine …
33Tank — For other uses, see Tank (disambiguation). Tank A former British Arm …
34Tallboy bomb — Infobox Weapon name=Tallboy bomb caption=Modern replica of a Tallboy origin=United Kingdom type= Conventional is ranged= is bladed= is explosive=yes is artillery= is vehicle= is UK=yes service=June 8 1944 April 25 1945 used by=No. 617 Squadron… …
35Casting (metalworking) — Casting iron in a sand mold In metalworking, casting involves pouring liquid metal into a mold, which contains a hollow cavity of the desired shape, and then allowing it to cool and solidify. The solidified part is also known as a casting, which… …
36History of ferrous metallurgy — Iron (material) redirects here. For the chemical element Fe, see Iron. Bloomery smelting during the Middle Ages. The history of ferrous metallurgy began far back in prehistory. The earliest surviving iron artifacts, from the 5th millennium BC in… …
37surface hardening — ▪ metallurgy treatment of steel by heat or mechanical means to increase the hardness of the outer surface while the core remains relatively soft. The combination of a hard surface and a soft interior is greatly valued in modern engineering… …
38M16 rifle — Rifle, 5.56 mm, M16 From top to bottom: M16A1, M16A2, M4A1, M16A4 Type Assault rifle Place  …
39Battleship — For other uses, see Battleship (disambiguation). The firepower of a battleship demonstrated by USS Iowa (ca. 1984) A battleship is a large armored warship with a main battery consisting of heavy caliber guns. Battleships were large …
40Glock pistol — Infobox Weapon name=Glock caption=The Glock 17 (recent production model) origin=flag|Austria type=Semi automatic pistol is ranged=yes service=1980–present used by=See Users wars= designer=Gaston Glock design date=1980 manufacturer=Glock GmbH unit …
