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Item #:
99843812
4140 Alloy Steel Round Bar, Unpolished (Mill) Finish, Annealed, Cold Finish, ASTM A108, 2.75" Diameter, 36" Length, OnlineMetals
Item #:
99843812
USD 303
Price Details
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Imported from USA store
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Order now and get it around Tuesday, August 11
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4140 alloy steel is known for strength, resistance to fracturing, abrasion, and impact in high-stress applications.
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What Stands Out
High Strength
The 4140 alloy steel offers exceptional strength and toughness, ideal for demanding applications such as automotive and machinery, outperforming standard steel in durability and reliability.
Precision Dimensions
With a diameter of 0.875 inches and a length of 12 inches, this round bar ensures precise dimensional control, making it perfect for custom fabrication and machine tooling.
Versatile Use
This annealed, cold-finished bar is suitable for various industries, allowing for easy machining and welding, providing flexibility for engineers and manufacturers to innovate freely.
Product Details
| Item Weight | 6.57 lbs (2.98 kg) |
Who Should Buy?
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Machinists
Ideal for machinists needing strong, durable materials for precision machining applications in various industries.
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Fabricators
Excellent for fabricators looking for high-strength steel bars for welding and fabrication projects.
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Engineers
Suitable for engineers designing components requiring high wear resistance and toughness in their applications.
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Hobbyists
May not be suitable for casual hobbyists who require lighter materials for simple crafts or projects.
Product Description
4140 Alloy Steel Round Bar, Unpolished (Mill) Finish, Annealed, Cold Finish, ASTM A108, 2.75" Diameter, 36" Length, OnlineMetals
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Customer Questions & Answers
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Question:
What is 4140 Alloy Steel, and what are its key properties?
Answer: 4140 Alloy Steel is a chromium-molybdenum steel known for its strength and toughness. Its key properties include high hardness, better wear resistance, and the ability to withstand heavy loads. This makes it suitable for a variety of applications, from structural components to automotive parts. Its ability to maintain strength at elevated temperatures further enhances its utility in demanding conditions. -
Question:
What is the difference between annealed and cold finished 4140 steel?
Answer: Annealed 4140 steel is heat-treated to reduce hardness and improve machinability, making it easier to work with during fabrication. Cold finished 4140, on the other hand, has been processed to achieve tighter tolerances and enhanced surface finish. The choice between the two depends on the specific requirements of your project, such as strength, durability, and machining needs. -
Question:
What applications is 4140 Alloy Steel Round Bar suitable for?
Answer: 4140 Alloy Steel Round Bar is widely used in industries such as automotive, aerospace, and manufacturing due to its high strength and versatility. Common applications include crankshafts, gears, and various machine components that require reliable performance under stress. Its ability to be easily welded and machined makes it a favorite among engineers and fabricators. -
Question:
How should 4140 alloy steel be cut or machined?
Answer: Cutting or machining 4140 alloy steel requires tools made from high-speed steel or carbide due to its toughness. Maintaining cool cutting techniques is essential to prevent overheating and preserve the integrity of the metal. Furthermore, using appropriate lubricants or coolants can enhance machining efficiency and prolong tool life, ensuring precise results in your projects. -
Question:
Can 4140 Alloy Steel be welded, and what precautions are necessary?
Answer: Yes, 4140 Alloy Steel can be welded, but specific precautions are necessary due to its alloying elements. Pre-heating the material before welding is recommended to minimize the risk of cracking. Additionally, post-weld heat treatment is frequently advised to relieve stresses and restore ductility, ensuring strong joints. Familiarity with welding techniques suitable for alloy steels will yield the best results. -
Question:
What are the dimensions of the 4140 Alloy Steel Round Bar available?
Answer: The 4140 Alloy Steel Round Bar available has a diameter of 0.5625 inches and a length of 36 inches. These dimensions provide an optimal size for various applications, enabling users to cut and machine the bar as needed for specific projects. This length is particularly useful for fabricating medium-sized components in mechanical and structural applications. -
Question:
Is the 4140 Alloy Steel Round Bar corrosion resistant?
Answer: 4140 Alloy Steel is not inherently corrosion-resistant, given its carbon content and alloying elements. Therefore, it’s important to apply protective coatings or finishes if the bar will be exposed to harsh environments. For applications in corrosive settings, considering alternative materials or protective measures will help ensure longer service life and maintenance efficiency. -
Question:
What is the significance of ASTM A108 for 4140 Alloy Steel?
Answer: ASTM A108 is the standard specification that outlines the requirements for steel bars and shapes, including 4140 alloy steel. This ensures that the material meets certain quality standards such as mechanical properties and chemical composition. Choosing 4140 steel that adheres to ASTM A108 guarantees reliability and compatibility for various engineering applications. -
Question:
Where can I buy 4140 Alloy Steel Round Bar in Palau?
Answer: You can buy 4140 Alloy Steel Round Bar at Ubuy. They offer a range of materials, including the specific dimensions and finishes you need. Ubuy is known for sourcing high-quality products, making it a reliable destination for your steel requirements. Their platform also showcases detailed product specifications, ensuring you can make informed choices for your projects. -
Question:
How does the unpolished mill finish affect the performance of 4140 Alloy Steel?
Answer: The unpolished mill finish of 4140 Alloy Steel allows for better adhesion of coatings and surface treatments, which can enhance its corrosion resistance and overall durability. Although it may not have the aesthetic appeal of polished finishes, this raw texture is beneficial for applications where the surface finish is not critical. It also provides a suitable roughness for machining operations.
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USD 303
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Features & Benefits
- Made from high-strength 4140 alloy steel with chromium and molybdenum.
- Cold finished and annealed for increased formability and toughness.
- Complies with ASTM A108 specifications ensuring quality and reliability.
- Suitable for various heavy-duty applications like gears, shafts, and spindles.
- Can be heat treated for enhanced hardness and durability.
- Excellent machinability allows for easy cutting and shaping.
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