Metal injection molded ammunition cartridge

A metal injection molded ammunition cartridge comprising:

• a metal injection molded metal mid-body comprising a nose connection surface at a first end opposite a primer insert end at a second end connected by a cylindrical propellant chamber wherein the primer insert end comprises a primer flash hole that extends from the propellant chamber into a primer recess adapted to accept a primer;
• a metal injection molded metal bullet-end component that mates to the metal injection molded metal mid-body comprising a projectile aperture at a first end adapted to receive a projectile, a neck that extends from the projectile aperture to a shoulder region, and a coupling end the extends from the neck and mates to the nose connection surface to enclose the propellant chamber, to form a metal injection molded ammunition cartridge, wherein the metal injection molded metal mid-body, the metal injection molded metal bullet-end component or both comprises
• a) 2-16 w % Ni;
• 10-20 w % Cr;
• 0-5 w % Mo;
• 0-0.6 w % C;
• 0-6.0 w % Cu;
• 0-0.5 w % Nb+Ta;
• 0-4.0 w % Mn;
• 0-2.0 w % Si and the balance Fe;
• b) 2-6 w % Ni;
• 13.5-19.5 w % Cr;
• 0-0.10 w % C;
• 1-7.0 w % Cu;
• 0.05-0.65 w % Nb+Ta;
• 0-3.0 w % Mn;
• 0-3.0 w % Si and the balance Fe;
• c) 3-5 w % Ni;
• 15.5-17.5 w % Cr;
• 0-0.07 w % C;
• 3-5.0 w % Cu;
• 0.15-0.45 w % Nb+Ta;
• 0-1.0 w % Mn;
• 0-1.0 w % Si and the balance Fe;
• d) 10-14 w % Ni;
• 16-18 w % Cr;
• 2-3 w % Mo;
• 0-0.03 w % C;
• 0-2 w % Mn;
• 0-1 w % Si and the balance Fe;
• e) 12-14 w % Cr;
• 0.15-0.4 w % C;
• 0-1 w % Mn;
• 0-1 w % Si and the balance Fe;
• f) 16-18 w % Cr;
• 0-0.05 w % C;
• 0-1 w % Mn;
• 0-1 w % Si and the balance Fe;
• g) 3-12 w % aluminum, 2-8 w % vanadium, 0.1-0.75 w % iron, 0.1-0.5 w % oxygen, and the remainder titanium;
• or
• h) about 6 w % aluminum, about 4 w % vanadium, about 0.25 w % iron, about 0.2 w % oxygen, and the remainder titanium.

A unitary metal injection molded ammunition cartridge comprising:

• a first end having a projectile aperture adapted to receive a projectile;
• a second end opposite the first end,
• a mid-body that connects the first end to the second end forming a cylindrical propellant chamber,
• wherein the second end houses a primer recess adapted to receive a primer and an extraction flange around a circumference of the second end to allow extraction of the cartridge and a primer flash hole positioned in the primer recess that connects the propellant chamber and the primer recess, wherein the mid-body comprises
• a) 2-16 w % Ni;
• 10-20 w % Cr;
• 0-5 w % Mo;
• 0-0.6 w % C;
• 0-6.0 w % Cu;
• 0-0.5 w % Nb+Ta;
• 0-4.0 w % Mn;
• 0-2.0 w % Si and the balance Fe;
• b) 2-6 w % Ni;
• 13.5-19.5 w % Cr;
• 0-0.10 w % C;
• 1-7.0 w % Cu;
• 0.05-0.65 w % Nb+Ta;
• 0-3.0 w % Mn;
• 0-3.0 w % Si and the balance Fe;
• c) 3-5 w % Ni;
• 15.5-17.5 w % Cr;
• 0-0.07 w % C;
• 3-5.0 w % Cu;
• 0.15-0.45 w % Nb+Ta;
• 0-1.0 w % Mn;
• 0-1.0 w % Si and the balance Fe;
• d) 10-14 w % Ni;
• 16-18 w % Cr;
• 2-3 w % Mo;
• 0-0.03 w % C;
• 0-2 w % Mn;
• 0-1 w % Si and the balance Fe;
• e) 12-14 w % Cr;
• 0.15-0.4 w % C;
• 0-1 w % Mn;
• 0-1 w % Si and the balance Fe;
• f) 16-18 w % Cr;
• 0-0.05 w % C;
• 0-1 w % Mn;
• 0-1 w % Si and the balance Fe;
• g) 3-12 w % aluminum, 2-8 w % vanadium, 0.1-0.75 w % iron, 0.1-0.5 w % oxygen, and the remainder titanium;
• or
• h) about 6 w % aluminum, about 4 w % vanadium, about 0.25 w $ iron, about 0.2 w % oxygen, and the remainder titanium.