Carbon Steel Square Bar, 6 in L, 5/16 in W MPN:45s.312-6
Carbon Steel Square Bar, 6 in L, 5/16 in W
This high-strength Carbon Steel Square Bar is ideal for construction, manufacturing, and repair applications where durability and reliability are essential. Its 1045 grade carbon steel composition and case-hardened heat treatment provide exceptional hardness and wear resistance. With a yield strength of 77,000 psi and tensile strength of 100,000 psi, this bar can withstand heavy loads and stresses. Suitable for use in machinery, tools, and equipment, it also offers excellent machinability and is available in a variety of sizes. Perfect for builders, machinists, and fabricators, this bar is a reliable choice for any project requiring strength and precision.
Top product features:
- Carbon Steel Square Bar is made from 1045 material grade.
- The bar is case-hardened for improved wear resistance.
- It has a polished mechanical finish for reduced friction and improved machinability.
Top product applications:
- Machine Building: Carbon Steel Square Bar is a versatile material used in the construction of machines and equipment, such as gears, shafts, and other mechanical components.
- Automotive Industry: This product can be used in the production of automotive parts, including engine components, suspension systems, and other metal components.
- Fabrication and Welding: The carbon steel square bar can be used as a base material for fabrication and welding projects, such as creating frames, brackets, and other metal structures.
Carbon Steel Square Bar, Material Carbon Steel, Material Grade 1045, Thickness 0.31 in, Thickness Tolerance -0.004 in, Overall Length 6 in, Overall Width 5/16 in, Fabrication Cold Rolled, Heat Treatable Heat Treatable, Heat Treatment Case-Hardened, Mechanical Finish Polished, Yield Strength 77,000 psi, Tensile Strength 100,000 psi, Brinell Hardness 90 BHN, Rockwell Hardness 43 HRC, Machinability 64 Percent, Standards ASTM A108, ASTM A29
Additional Information
- Country of Origin: US
- 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: 7.00
- Package Width: 1.00
- Package Height: 1.00
- Package Weight: 1.00
Product info last updated on February 16, 2026 6:24am UTC
Category: Carbon Steel