Please update your browser.

CarpenterTechnology.com doesn’t support this browser version any longer. Using an updated browser will provide a better experience.

Learn more about recommended browser requirements for CarpenterTechnology.com

A-21® & GNB200

Next-generation alloys for next-generation weapons

Carpenter Technology has been producing superior firepower since our armor-piercing alloys helped win the Spanish–American War in 1898. Our new A-21 and GNB200 alloys continue that tradition, offering SHOT Show attendees an exclusive strategic advantage.

Exclusive content for SHOT Show attendees

Meet the game-changing steels for rifle barrels and knife blades.

  • High strength, toughness and wear resistance
  • Industry-leading impact strength from 1000°F to -40°F
  • Built for existing mass production processes