AISI 4140
AISI 4140is a versatile chromium-molybdenum (chromoly) alloy steel renowned for its high strength, toughness, and fatigue resistance. It is widely used in applications requiring exceptional mechanical performance under stress, particularly after heat treatment.
Descriptions
1. Chemical Composition
AISI 4140 contains chromium and molybdenum for enhanced hardenability, strength, and wear resistance. Its composition allows for tailored properties through heat treatment.

2. Mechanical Properties
AISI 4140 forgings achieve exceptional mechanical properties through heat treatment. Values vary based on processing conditions (e.g., normalized, quenched, and tempered).

3. Key Advantages
High Strength & Toughness: Suitable for dynamic and impact loads.
Heat Treatability: Properties tailored via quenching, tempering, or annealing.
Wear Resistance: Ideal for abrasive environments.
Fatigue Life: Performs well under cyclic stress (e.g., rotating machinery).
4. Typical Product Names
Forged Gears
Heavy-Duty Axles
Hydraulic Cylinder Rods
High-Strength Fasteners
Turbine Shafts
Recent products



China 4145H Stabilizer forgings Reamer forgings

Hot rolled Carbon Steel Round Bar 1018 1008 1045 Forged Solid Round Bars
CONTACT US
Address
B-2007,Chuanmei Building,Taishan Street,Taian City,Shandong, China
Call Us
+86 0538 6368027
Email Address
Sales@tiptopforging.com
Applications
Landing gear parts, engine mounts, and structural fittings.
Crankshafts, axle shafts, gears, and suspension components.
Drill collars, valve bodies, and pump shafts.
Hydraulic rods, spindles, heavy-duty bolts, and dies.