Alloy Steel 4340 is a nickel-chromium-molybdenum alloy steel that demonstrates good toughness and good fatigue resistance. When heat treated, 4340 Alloy steel maintains good wear resistance along with good atmospheric corrosion resistance.

Material: Alloy Steel
Shape: Round Rod
Alloy: 4340
Temper: Annealed
Diameter: 0.750 (3/4 inch)
Finish: Cold Finished
Specifications: ASTM A108, UNS G43400
Tolerances: Diameter: (+/-0.004) | Length: -0/+0.999)