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Item #:
99843812
4140 Alloy Steel Round Bar, Unpolished (Mill) Finish, Annealed, Cold Finish, ASTM A108, 1.5" Diameter, 24" Length, OnlineMetals
Item #:
99843812
MWK 144959
Price Details
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Imported from USA store
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4140 steel, also called 'Chromoly 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 | 1 lbs (450 grams) |
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, 1.5" Diameter, 24" Length, OnlineMetals
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Customer Questions & Answers
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Question:
What is the composition of 4140 alloy steel?
Answer: 4140 alloy steel is primarily composed of iron, along with 0.38-0.43% carbon, 0.75-1.00% chromium, and 0.15-0.25% molybdenum. This unique mix of elements grants 4140 its remarkable strength, toughness, and wear resistance. Its properties make it suitable for heavy-duty applications, such as automotive parts, machinery components, and tool manufacturing, where durability is essential. -
Question:
What are the typical applications of 4140 alloy steel round bars?
Answer: 4140 alloy steel round bars are versatile and commonly used in various applications, including machinery parts, shafts, gears, and crankshafts. Their high tensile strength and fatigue resistance make them an ideal choice for construction, automotive, and industrial uses. Whether you're building a custom tooling project or fabricating heavy equipment, 4140 bars provide the reliability needed for demanding environments. -
Question:
Is the 4140 round bar available in different lengths and diameters?
Answer: Yes, 4140 alloy steel round bars are available in a variety of lengths and diameters, allowing for customization based on specific project requirements. Having a range of sizes ensures that users can select the most suitable option for their design. This flexibility is particularly valuable for engineers and fabricators who need to accommodate unique specifications in their work. -
Question:
What is the significance of the ASTM A108 specification for this steel?
Answer: The ASTM A108 specification outlines the standards for cold-finished carbon steel bars, ensuring consistent quality and performance. For users, this means that the 4140 alloy steel round bar complies with rigorous criteria for mechanical properties, surface quality, and dimensional accuracy. This standardization is vital for engineers and manufacturers who rely on predictable performance in their applications. -
Question:
What does 'unpolished mill finish' mean?
Answer: An 'unpolished mill finish' refers to the steel's natural surface condition as it comes from the manufacturing process, without any additional finishing or polishing. This finish often shows the raw characteristics of the metal, making it suitable for applications where aesthetics are less critical than performance. Users seeking ultimate strength over appearance often prefer this finish for industrial purposes. -
Question:
How does the annealing process affect 4140 steel?
Answer: The annealing process involves heating the steel to a specific temperature and allowing it to cool slowly, resulting in improved ductility and reduced hardness. For 4140 alloy steel, this treatment enhances its machinability, making it easier to cut and shape for various manufacturing needs. Professions dealing with precision machining or fabrication will find annealed 4140 steel significantly easier to work with. -
Question:
Can the 4140 alloy steel round bar be heat-treated?
Answer: Yes, the 4140 alloy steel round bar can undergo various heat treatment processes to enhance its mechanical properties. Commonly, it can be normalized, tempered, or quenched to achieve desired hardness levels and additional strength. Heat treating enables users to tailor the material's characteristics to specific requirements, especially in high-stress applications, making it a popular choice among engineers. -
Question:
What is the importance of the cold finish on this type of bar?
Answer: Cold finishing refers to the process of enhancing the surface finish and improving dimensional tolerance after the bar is formed. This treatment enhances the round bar's mechanical properties, providing a smoother, more precise surface ideal for machining applications. Engineers and designers benefit from cold-finished products as they allow for tighter tolerances and improved fit in assembled components. -
Question:
How does 4140 steel compare to other alloy steels?
Answer: 4140 steel is known for its excellent combination of strength, toughness, and wear resistance compared to other alloy steels. While other alloys may excel in specific properties, 4140 offers a well-rounded performance that is particularly suited for heavy-load and high-stress applications. This makes it a preferred choice for manufacturers building durable components in various industries, from automotive to manufacturing. -
Question:
Where can I buy OnlineMetals 4140 Alloy Steel Round Bar in Malawi?
Answer: You can purchase the OnlineMetals 4140 Alloy Steel Round Bar from Ubuy. Ubuy provides a convenient online platform for various products, including high-quality alloy steel bars. You can easily browse their selection and make your purchase while enjoying a smooth shopping experience tailored to your needs.
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MWK 144959
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Features & Benefits
- Made from high-strength 4140 alloy steel.
- Cold finished and annealed for superior properties.
- Meets ASTM A108 specifications for quality assurance.
- Highly machinable and suitable for various applications.
- Can be heat treated for enhanced hardness.
- Ideal for heavy-duty components like gears and bolts.
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