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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
€ 279
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Imported from USA store
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4140 alloy steel round rod is known for strength and 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 Dimensions | 3.94 x 3.94 x 3.94 inches (10 x 10 x 10 cm) |
| Item Thickness | 1.5 Inches (3.8 cm) |
| Item Shape | Round |
| Item Form | Rod |
| Material | Alloy Steel 4140/4142 |
| Grade Rating | 4140 |
| Specification Met | Astm A108 |
| Brand Name | Online Metals |
| Number of Items | 1 |
| Model Number | 120619 |
| Part Number | 15490 |
| Unit Count | 2.0 Feet |
| Manufacturer | OnlineMetals |
| Brand | Online Metals |
| Item dimensions L x W x H | 3.94 x 3.94 x 3.94 inches (10 x 10 x 10 cm) |
| Shape | Round |
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 are the key properties of 4140 alloy steel?
Answer: 4140 alloy steel is known for its high strength, toughness, machinability, and resistance to fracturing and wear. -
Question:
Can 4140 alloy steel be heat treated?
Answer: Yes, it can be heat treated to achieve higher hardness. -
Question:
What applications is 4140 alloy steel commonly used in?
Answer: It is commonly used in gears, shafts, spindles, fixtures, bolts, valves, sprockets, pistons, and collars for heavy-duty applications.
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“The product received very good packaging & safe…Thank You”
16 June 2026 · via Trustpilot
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“Accurate delivery timing given”
16 June 2026 · via Trustpilot
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“Not madly expensive like I thought, and much quicker than promised.”
15 June 2026 · via Trustpilot
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6/7/2026 · via Trustpilot
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Kwame
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“The process was smooth, with clear communication and timelines. This was my 1st purchase and I am really impressed. I will definitely be coming back.”
12 June 2026 · via Trustpilot
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Top selling 4140 Alloy Steel in Malta
Last Updated on July 8, 2026
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€ 279
Order now and get it around Monday, August 10
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Features & Benefits
- High-strength 4140 alloy steel with chromium and molybdenum.
- Cold finished and annealed for enhanced formability and toughness.
- Meets ASTM A108 specifications ensuring quality and performance.
- Excellent machinability and can be heat treated for increased hardness.
- Ideal for high-stress applications like gears, shafts, and fixtures.
- Unpolished surface maintains authentic mill finish for durability.
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