RM Aerospace Alloys

SAE 4140 steel is a versatile and widely used alloy steel known for its impressive strength and toughness. It belongs to the AISI/SAE A29 standard. Here we talk about different aspects of SAE 4140, including its chemical composition, mechanical properties, equivalent materials, and applications. Otai supplies SAE 4140 round bar and plate worldwide for over 20 years. We supply you right and reliable quality SAE 4140 steel.

4140 Chemical Composition

The chemical composition of SAE 4140 alloy steel is basic for its properties and applications. This 4140 alloy typically contains:

• Carbon: 0.38-0.43%
• Manganese: 0.75-1.00%
• Chromium: 0.80-1.10%
• Molybdenum: 0.15-0.25%
• Silicon: 0.15-0.30%
• Phosphorus: Max 0.035%
• Sulfur: Max 0.04%

Mechanical Properties of SAE 4140

SAE 4140 mechanical properties are what make it an excellent option for various industrial applications. Key properties include:

• Tensile Strength: Typically ranges between 655-740 MPa
• Yield Strength: Approximately 415 MPa
• Elongation: Around 25.7%
• Hardness: Brinell hardness of around 197

These properties can vary depending on the treatment processes like QT or annealig and normalizing. You tell us your special technical requirements, and our engineer would evaluate it and send you professional offer.

SAE 4140 Equivalent Materials

Sometimes SAE 4140 is not avaiable, or you are looking for alternative option with low cost and quicker delivery time, it’s also important to know those equivalent of SAE 4140 steel material:

• AISI 4140
• EN19 (European Standard BS 970)
• 42CrMo4 (European Standard EN 10083)
• SCM440 (Japanese Standard JIS G4105)

Each of these equivalents maintains similar chemical compositions and mechanical properties. Generally the price of SAE 4140 is highest than other equivalents while 42CrMo4 is the grade which is easiest to get.

AISI 4140 vs SAE 4140: Understanding the Differences

While AISI 4140 and SAE 4140 are often used interchangeably, it’s important to understand their nuances.

Alloy steel forged bar mainly use in- Aerospace: For critical components like shafts and landing gear. Automotive Industry: Used in crankshafts, axles, and gears. Energy Sector: For turbines, generators, and oil drilling equipment. Tool and Die Manufacturing: For punches, dies, and molds. Construction: Used in heavy machinery and structural components.

Nickel Alloy Steel is a type of alloy steel that contains nickel as one of its primary alloying elements,Adding nickel enhances the steel's properties, making it highly valued in various industrial applications.Nickel increases tensile strength, making the steel stronger without sacrificing ductility.

Nickel Alloy Steel is a type of alloy steel that contains nickel as one of its primary alloying elements,Adding nickel enhances the steel's properties, making it highly valued in various industrial applications.Nickel increases tensile strength, making the steel stronger without sacrificing ductility.

Nickel Alloy Steel is a type of alloy steel that contains nickel as one of its primary alloying elements,Adding nickel enhances the steel's properties, making it highly valued in various industrial applications.Nickel increases tensile strength, making the steel stronger without sacrificing ductility.

Nickel Alloy Steel is a type of alloy steel that contains nickel as one of its primary alloying elements,Adding nickel enhances the steel's properties, making it highly valued in various industrial applications.Nickel increases tensile strength, making the steel stronger without sacrificing ductility.

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Nickel Alloy Steel is a type of alloy steel that contains nickel as one of its primary alloying elements,Adding nickel enhances the steel's properties, making it highly valued in various industrial applications.Nickel increases tensile strength, making the steel stronger without sacrificing ductility.

Nickel Alloy Steel is a type of alloy steel that contains nickel as one of its primary alloying elements,Adding nickel enhances the steel's properties, making it highly valued in various industrial applications.Nickel increases tensile strength, making the steel stronger without sacrificing ductility.

Alloy steel is a type of steel that is alloyed with various elements, such as chromium, nickel, molybdenum, vanadium, or manganese, to enhance its mechanical properties. These properties include increased strength, hardness, toughness, and resistance to wear and corrosion. Alloy steel is widely used in industries such as aerospace, automotive, construction, and energy for components like gears, shafts, pipelines, and structural parts.

Hastelloy is a trademarked name for a group of corrosion-resistant metal alloys primarily composed of nickel, with varying amounts of molybdenum, iron, chromium, cobalt, and tungsten. It is particularly known for its outstanding performance in highly corrosive environments, making it a popular choice in industries such as chemical processing, marine engineering, and aerospace.

Hastelloy is a trademarked name for a group of corrosion-resistant metal alloys primarily composed of nickel, with varying amounts of molybdenum, iron, chromium, cobalt, and tungsten. It is particularly known for its outstanding performance in highly corrosive environments, making it a popular choice in industries such as chemical processing, marine engineering, and aerospace.

Nickel Alloy Steel is a type of alloy steel that contains nickel as one of its primary alloying elements,Adding nickel enhances the steel's properties, making it highly valued in various industrial applications.Nickel increases tensile strength, making the steel stronger without sacrificing ductility.

Alloy steel is a type of steel that is alloyed with various elements, such as chromium, nickel, molybdenum, vanadium, or manganese, to enhance its mechanical properties. These properties include increased strength, hardness, toughness, and resistance to wear and corrosion. Alloy steel is widely used in industries such as aerospace, automotive, construction, and energy for components like gears, shafts, pipelines, and structural parts.

Nickel Alloy Steel is a type of alloy steel that contains nickel as one of its primary alloying elements,Adding nickel enhances the steel's properties, making it highly valued in various industrial applications.Nickel increases tensile strength, making the steel stronger without sacrificing ductility.

Alloy steel is a type of steel that is alloyed with various elements, such as chromium, nickel, molybdenum, vanadium, or manganese, to enhance its mechanical properties. These properties include increased strength, hardness, toughness, and resistance to wear and corrosion. Alloy steel is widely used in industries such as aerospace, automotive, construction, and energy for components like gears, shafts, pipelines, and structural parts.

Nickel Alloy Steel is a type of alloy steel that contains nickel as one of its primary alloying elements,Adding nickel enhances the steel's properties, making it highly valued in various industrial applications.Nickel increases tensile strength, making the steel stronger without sacrificing ductility.

Monal 401 Alloy – High-Performance Nickel-Copper Alloy for Demanding Applications

Monal 401 alloy is a premium nickel-copper-based superalloy known for its exceptional corrosion resistance, high strength, and excellent thermal conductivity. It is a versatile material widely used in industries where resistance to harsh environments, high temperatures, and mechanical stress is critical. Monal 401 alloy is an ideal choice for applications requiring durability, reliability, and long-term performance.

Key Features of Monal 401 Alloy:

• Corrosion Resistance: Excellent resistance to seawater, acids, alkalis, and salt solutions, making it suitable for highly corrosive environments.

• High Strength: Maintains mechanical integrity under high-pressure and high-stress conditions.

• Thermal Conductivity: Provides efficient heat transfer, ideal for thermal applications.

• Ductility and Toughness: Highly ductile and tough, ensuring durability in demanding applications.

• Non-Magnetic Properties: Perfect for applications where magnetic interference must be avoided.

• Temperature Resistance: Performs exceptionally well in both cryogenic and elevated temperature environments.

Applications of Monal 401 Alloy:

1. Marine Engineering:

   • Seawater piping systems, heat exchangers, and condensers.

   • Offshore platforms and shipbuilding components.

2. Chemical Processing:

   • Equipment for handling sulfuric acid, hydrochloric acid, and alkaline solutions.

   • Reactors, tanks, and piping systems in chemical plants.

3. Oil and Gas:

   • Downhole tubing, valves, and pumps for offshore and onshore applications.

   • Pipelines and fittings for sour gas environments.

4. Power Generation:

   • Heat exchangers, boilers,power plants.

   • Components for nuclear and thermal power systems.

5. Desalination Plants:

   • Evaporators and heat exchangers for saltwater processing.

6. Aerospace:

   • Fuel and hydraulic systems requiring high strength and corrosion resistance.

Grades and Specifications:

• Monal 401 Alloy (UNS N04401): A specialized grade of nickel-copper alloy with enhanced properties for specific applications.

• Complies with international standards such as ASTM B164, ASME SB164, and DIN/EN standards.

Why Choose Monal 401 Alloy?

• Superior performance in corrosive and high-stress environments.

• Long service life with minimal maintenance, reducing operational costs.

• Customizable forms and sizes to meet specific industrial requirements.

• Trusted by industries worldwide for reliability and durability.

Available Product Forms:

• Sheets, plates, and coils

• Pipes, tubes, and fittings

• Bars, rods, and wires

• Forged components and flanges

Standards and Certifications:

• Manufactured to ASTM, ASME, DIN, and EN standards.

• Test certificates and material traceability provided for quality assurance.

Ideal for Indian Industries:

Monal 401 alloy is widely used in India’s chemical, oil and gas, power, marine, and aerospace sectors. Its ability to withstand harsh environments makes it a preferred choice for critical applications.