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Item #:
193257798
4340 Alloy Steel Round Bar, Unpolished (Mill) Finish, Cold Finish, Normalized, AMS 6415, 0.875" Diameter, 24" Length, OnlineMetals
Item #:
193257798
€ 140
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*All items will import from US
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Imported from USA store
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Order now and get it around Thursday, August 06
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4340 steel offers exceptional strength, toughness, and wear resistance, making it the ideal choice for demanding applications.
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What Stands Out
High Strength
4340 alloy steel is renowned for its superior strength and toughness, making it ideal for demanding applications in aerospace, automotive, and machinery sectors.
Cold Finished
The cold finish process provides a consistent surface finish and precise dimensional tolerances, ensuring high quality for precise engineering needs.
Normalized Specification
Normalizing enhances the material's ductility and impact resistance, ensuring improved performance and longevity in high-stress environments.
Product Details
| Item Thickness | 0.88 Inches (2.2 cm) |
| Item Shape | Round |
| Item Form | Rod |
| Material | Alloy Steel 4340 |
| Grade Rating | 4340 |
| Specification Met | Ams 6415 |
| Brand Name | Online Metals |
| Number of Items | 1 |
| Model Number | 62379 |
| Part Number | 7389 |
| Unit Count | 2.0 Feet |
| Manufacturer | OnlineMetals |
| Brand | Online Metals |
| Shape | Round |
| Item Weight | 4.8 lbs (2.18 kg) |
Who Should Buy?
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Machine Shops
Ideal for machine shops needing high-strength steel for manufacturing precision parts and components.
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Automotive Engineers
Suitable for automotive engineering projects requiring durable materials for gear shafts and other critical components.
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Manufacturing Projects
Great for DIY manufacturers looking for reliable, high-performance steel for various fabrication tasks.
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Lightweight Applications
Not suitable for applications where lightweight materials are essential for performance or efficiency.
Product Description
4340 Alloy Steel Round Bar, Unpolished (Mill) Finish, Cold Finish, Normalized, AMS 6415, 0.875" Diameter, 24" Length, OnlineMetals
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What is the composition of OnlineMetals 4340 Alloy Steel Round Rod?
Answer: The OnlineMetals 4340 Alloy Steel Round Rod is composed primarily of iron, along with essential alloying elements such as chromium, nickel, and molybdenum. These elements enhance the steel's strength, hardness, and toughness, making it ideal for demanding applications. The specific ratios of these alloys contribute to improved wear resistance and fatigue strength. This is particularly useful in automotive and aerospace applications where high-stress durability is necessary. -
Question:
What applications are suitable for 4340 Alloy Steel?
Answer: The 4340 Alloy Steel is versatile and widely utilized in various industries. Its high strength makes it suitable for heavy-duty applications like gears, axles, and shafts in automotive manufacturing. Additionally, it's excellent for components in the aerospace sector, such as landing gear and engine mounts, where reliability and resistance to shock loading are critical. The rod's characteristics allow it to be heat treated for even greater performance in these demanding applications. -
Question:
Is the OnlineMetals 4340 Alloy Steel Round Rod easy to machine?
Answer: The OnlineMetals 4340 Alloy Steel Round Rod, while having high strength, can be machined with the right tools and techniques. It is recommended to use high-speed steel or carbide cutting tools and to apply proper cooling methods to prevent overheating. Adequate planning of your machining process, including speeds and feeds, will result in a smoother finish and reduce tool wear. This steel's machinability makes it popular for custom fabrication projects requiring precise dimensions. -
Question:
What are some finishing options for the 4340 Alloy Steel Rod?
Answer: After machining the 4340 Alloy Steel Rod, various finishing options can enhance its performance and aesthetics. Common post-processing methods include heat treatment to improve hardness, grinding for a finer surface finish, and coating applications to prevent corrosion. Depending on the end-use, you can choose to apply methods such as nitriding or phosphating to increase surface wear resistance, thus optimizing it for performance in challenging environments. -
Question:
How does the cold-finished feature affect the rod's properties?
Answer: Cold finishing improves the dimensional accuracy and surface finish of the OnlineMetals 4340 Alloy Steel Round Rod. By processing the steel at room temperature, stresses are reduced while achieving tighter tolerances and a more polished finish, enhancing its usability in precision applications. This makes the rod ideal for mechanical components that demand exact specifications and a smooth surface, contributing to better fitting and performance in assemblies. -
Question:
What is the significance of the AMS 6415 specification?
Answer: The AMS 6415 specification ensures that the OnlineMetals 4340 Alloy Steel Round Rod meets specific quality and performance standards required for high-stress aerospace applications. Adhering to this specification signifies that the material has been tested for its tensile strength, fatigue resistance, and impact properties, making it appropriate for critical components in the aerospace industry. Utilizing materials that comply with such specifications is essential for ensuring safety and reliability in aircraft manufacturing. -
Question:
What are the benefits of using an unpolished mill finish?
Answer: The unpolished mill finish on the OnlineMetals 4340 Alloy Steel Round Rod provides a raw, natural appearance while maintaining the steel's integrity. This finish is often preferred in various industrial applications where surface aesthetics are less important than functionality and strength. Additionally, the mill finish allows for easier subsequent machining and welding since there is no additional surface coating to interfere with these processes. -
Question:
How do I determine the correct size of the rod for my project?
Answer: To select the appropriate size of the OnlineMetals 4340 Alloy Steel Rod, consider the load requirements and space constraints of your project. Measure the dimensions needed for your application and think about how the rod will be used, whether for structural support, machine components, or custom parts. Consulting with engineering specifications or using design software can help ensure you choose the right diameter and length for optimal performance. -
Question:
Can the 4340 Alloy Steel Rod be welded?
Answer: Yes, the 4340 Alloy Steel Rod is weldable, although it requires proper techniques to maintain the material's beneficial properties. Preheating the rod before welding and using suitable filler materials can help reduce the risk of cracking and ensure a stronger joint. Post-weld heat treatment is often recommended to relieve stresses in high-strength applications. This makes it a viable choice for projects that require joining different components together effectively. -
Question:
Where can I buy the OnlineMetals 4340 Alloy Steel Round Rod in Malta?
Answer: You can conveniently purchase the OnlineMetals 4340 Alloy Steel Round Rod from Ubuy in Malta. Ubuy offers a variety of metal products, providing ease of access to quality materials for your projects. Their platform allows you to check availability, compare specifications, and order the right products directly online, making it a suitable choice for all your metal sourcing needs.
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“The product received very good packaging & safe…Thank You”
16 June 2026 · via Trustpilot
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€ 140
Order now and get it around Thursday, August 06
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Features & Benefits
- Made of high-performance 4340 alloy steel for superior toughness.
- Cold finished to achieve precise dimensions and high quality.
- Heat treatable for increased hardness and improved performance.
- Welcomes versatility with excellent machinability and weldability.
- Meets strict aerospace material specifications for reliability.
- Perfect for applications like gears, fasteners, and aircraft exteriors.
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