Hot Rolled Steel Flat Bar - 3-1/2 Inch X 5/8 Inch
Hot Rolled Steel Flat Bar - 3-1/2 Inch X 5/8 Inch
This 3-1/2" x 5/8" A36 Hot Rolled Steel Flat Bar is a versatile structural material ideal for fabrication and construction. Certified to ASTM A36, it offers 36,000 PSI minimum yield strength, excellent weldability, and is easily machined, drilled, and formed. In stock Los Angeles.
- A36 Steel Construction
- ASTM A36 Certified
- 58,000-80,000 PSI Tensile Strength
- Excellent Weldability
A36 hot rolled steel is a low-carbon structural steel produced by forming at elevated temperatures, resulting in a scaly, blue-grey finish and slightly rounded edges. This process makes the material cost-effective and easy to work with. Conforming to ASTM A36, it provides a reliable minimum yield strength of 36,000 PSI, making it a standard choice for structural applications.
As a large-width bar, this 3-1/2" size is particularly suited for applications requiring a broad, stable surface area. Common uses include machinery base plates, heavy structural supports, die components, trailer frames, and large mounting brackets where strength and load distribution are critical.
Specifications
- Material: A36 Hot Rolled Steel
- Standards: ASTM A36
- Strength/Tensile: 58,000-80,000 PSI
- Dimensions: 3-1/2" Width x 5/8" Thickness x 240" Length
- Finish: Hot Rolled (Mill Finish)
- Certifications: MTR Available
Applications
- Structural Engineering: Base plates for columns and beams - distributes load effectively over a wide area.
- Heavy Equipment: Mounting plates and frames - provides a strong, stable foundation for machinery.
- Transportation: Trailer cross-members and frame components - delivers high strength and durability.
- General Fabrication: Heavy-duty brackets, gussets, and supports - easy to weld and form into strong components.
Target Users
Fabricators, welders, structural engineers, and maintenance personnel rely on A36 flat bar for its strength, weldability, and value in construction and repair projects throughout the Los Angeles area.
Finish Options
This product comes standard with a hot rolled mill finish, characterized by a dark, scaly surface. This scale must be removed by grinding, sandblasting, or pickling before painting, galvanizing, or powder coating. For specific project requirements, other finishes may be available via special order. Contact our Los Angeles sales team for custom finish inquiries.
How to Measure
Flat bar is measured by its Width (A) and Thickness (B). Use calipers or a tape measure to determine the dimensions of the rectangular cross-section.
Example: To order this flat bar, specify "Hot Rolled Flat Bar, 3-1/2" x 5/8" x 20' length".
Order Checklist
- Product name and required dimensions (3-1/2" x 5/8" x 240")
- Material specification and quantity
- Confirm grade (A36) meets project requirements
- Surface finish requirements (Hot Rolled)
- Certifications required (Mill Test Report)
- Special cutting or delivery instructions
Quick Facts
- Product
- Hot Rolled Steel Flat Bar - 3-1/2 Inch X 5/8 Inch
- Material
- A36 Hot Rolled Steel
- Standards
- ASTM A36
- Key Properties
- 58,000-80,000 PSI tensile, excellent weldability, good formability
- Primary Applications
- Base plates, structural supports, trailer frames
- Location
- Los Angeles warehouse - Same-day pickup available
Available Sizes
We stock A36 Hot Rolled Flat Bar in widths from 1/2" to 12" and thicknesses from 1/8" to 2". This 3-1/2" x 5/8" size is available for immediate pickup in Los Angeles.
Custom cutting services available.
Contact for Sizing

