SAE/AISI 4120 Steel, 4120 Chromium-molybdenum Alloy Steel

SAE/AISI 4120 steel is a chromium-molybdenum structural alloy steel. The alloy steel has high fatigue strength, abrasion and impact resistance, toughness, and torsional strength.

4120 chromium-molybdenum alloy steel has in a wide variety of applications including aerospace, oil and gas, automotive, agricultural and defense, rely on Alloy Steel 4120 for critical products and parts such as:

Piston pins

Crankshafts

Forgings

Structural tubing

Frames

Gears

Flywheel components

4120 Alloy Steel consists of a specific chemical composition that includes:

Fe Balance

C 0.15-0.20%

Si 0.20-0.35%

Mo 0.20-0.30%

P .040% max

S .040% max

AISI 4120 alloy steel has high ductility. It can be formed using conventional techniques in the annealed condition. It requires more pressure or force for forming because it is tougher than plain carbon steels.

BEBON can offer various sizes of 4120 alloy steel in form of round bars, flat bars and plates. Welcome to send you inquiry to [email protected]