Alloy Steel Square Bar, 12" L, 3 1/2" W MPN:40S3.5-12
Alloy Steel Square Bar, 12" L, 3 1/2" W
This alloy steel square bar is a versatile and durable material suitable for various applications, including construction, manufacturing, and engineering projects. Its 4140 grade alloy steel provides excellent strength, toughness, and resistance to wear and tear. The bar's cold rolled fabrication and annealed heat treatment ensure a smooth finish and optimal machinability, making it ideal for machining and fabricating into complex shapes and components. Its high yield and tensile strength, along with a Brinell hardness of 217, make it suitable for demanding applications, such as heavy machinery, tooling, and equipment manufacturing.
Top product features:
- Cold Rolled fabrication for improved surface finish and dimensional accuracy
- Heat Treatable for enhanced strength and durability
- Machinability of 66 Percent for easier processing and reduced tool wear
Top product applications:
- Structural Framing
- Machine Parts and Components
- Tooling and Fixtures
Alloy Steel Square Bar, Material Alloy Steel, Material Grade 4140, Thickness 3.5 in, Thickness Tolerance 0 in/-0.008 in, Overall Length 12 in, Overall Width 3 1/2 in, Fabrication Cold Rolled, Heat Treatable Heat Treatable, Heat Treatment Annealed, Mechanical Finish Mill, Yield Strength 60,000 psi, Tensile Strength 95,000 psi, Brinell Hardness 217 BHN, Rockwell Hardness Not Rated, Machinability 66 Percent, Standards ASTM A304, ASTM A322, ASTM A331, Appearance Cold Finished
Additional Information
- Country of Origin: ZZ
- Drop Ship Item: Yes
- Blind Ship Eligible: No
- LTL Freight Required: No
- Lead Time: Ships in 3 days
- Minimum Order Quantity: 1
- Unit of Measure: EA
- Package Length: 13.00
- Package Width: 4.00
- Package Height: 4.00
- Package Weight: 45.00
Product info last updated on March 11, 2026 11:14am UTC
Category: Alloy Steel