AISI 4140 Round Bar

Product Description

AISI 4140 Round Bar

Introduction:
AISI 4140 is a chromium-molybdenum alloy steel renowned for its high strength, toughness, and excellent fatigue resistance. It is versatile, durable, and suitable for various applications, especially where high torsional strength and wear resistance are critical. AISI 4140 round bars are widely used in automotive, engineering, and manufacturing industries due to their ability to perform under high-stress conditions.

Key Features and Benefits

1. High Strength and Toughness:

   • AISI 4140 is known for its superior mechanical properties, offering high tensile strength and toughness.

2. Excellent Hardenability:

   • This steel is capable of achieving a wide range of hardness levels through heat treatment.

3. Wear Resistance:

   • Enhanced resistance to wear and abrasion makes it ideal for demanding applications.

4. Fatigue Resistance:

   • Exceptional fatigue strength ensures durability under cyclic loading conditions.

5. Good Machinability:

   • Easy to machine in its annealed or normalized state, allowing for precision manufacturing.

6. Corrosion Resistance:

   • Moderate corrosion resistance due to its chromium content.

7. Versatile Heat Treatment Options:

   • Responds well to hardening, tempering, and annealing processes, enabling custom mechanical properties.

Chemical Composition (Typical)

• Carbon (C): 0.38“0.43%
• Manganese (Mn): 0.75“1.00%
• Chromium (Cr): 0.80“1.10%
• Molybdenum (Mo): 0.15“0.25%
• Silicon (Si): 0.15“0.35%

Mechanical Properties

• Tensile Strength: 655“850 MPa
• Yield Strength: ‰415 MPa
• Elongation: ‰20%
• Hardness (Brinell): 197“237 HB

Applications

1. Automotive Industry:

   • Ideal for crankshafts, axles, gears, and other critical automotive components.

2. Oil and Gas Industry:

   • Used in drill collars, drill rods, and tool joints due to its strength and wear resistance.

3. Manufacturing:

   • Perfect for dies, molds, and fixtures requiring precision and toughness.

4. Engineering:

   • Widely applied in shafts, couplings, and mechanical components under high stress.

5. Construction Equipment:

   • Suitable for heavy-duty components in construction machinery.

6. Aerospace Industry:

   • Utilized in parts like landing gear and engine components requiring durability.

Heat Treatment Processes

1. Annealing: Improves machinability and relieves internal stresses.
2. Hardening and Quenching: Enhances strength and wear resistance.
3. Tempering: Balances hardness and toughness for application-specific performance.
4. Normalizing: Refines grain structure and improves mechanical properties.

Why Choose Ferrite™s AISI 4140 Round Bars?

At Ferrite Structural Steels Pvt. Ltd., we provide premium-grade AISI 4140 round bars that meet global quality standards. Manufactured using cutting-edge technology, our bars are available in a variety of sizes and finishes to cater to diverse industrial needs.

Features of Our Products:

• Stringent quality control for consistent performance.
• Heat-treated for optimal mechanical properties.
• Custom sizes and specifications available.

Contact us for reliable, high-performance AISI 4140 round bars tailored to your project requirements!