Hot Rolled Steel Flat Bar - 5 Inch X 3/4 Inch
A36 Hot Rolled Steel Flat Bar - 5" x 3/4" x 240"
This 5" x 3/4" A36 hot rolled steel flat bar delivers reliable structural performance for heavy-duty applications. Certified to ASTM A36, it provides a minimum 36,000 PSI yield strength with excellent weldability, making it ideal for base plates and structural framing. In stock Los Angeles.
- A36 Steel Construction
- ASTM A36 Certified
- 58,000 PSI Tensile Strength
- Excellent Weldability
A36 Hot Rolled Steel is a low-carbon structural steel with excellent formability and weldability. Produced by rolling steel at high temperatures, it has a characteristic blue-grey, scaled surface and slightly rounded edges. Conforming to ASTM A36 standards, this material offers a dependable combination of strength, ductility, and ease of fabrication for general purpose structural and industrial applications where precise tolerances are not a primary concern.
As a large profile bar, this 5" x 3/4" size provides substantial strength for demanding roles. It is commonly specified for machinery base plates, heavy structural supports, trailer frame components, and die components where rigidity and load-bearing capacity are critical. Its significant width distributes loads effectively, making it a reliable choice for foundational parts.
Specifications
- Material: A36 Steel
- Standards: ASTM A36
- Strength/Tensile: 58,000 - 80,000 PSI
- Dimensions: 5" Width x 3/4" Thickness x 240" Length
- Finish: Hot Rolled, Mill Scale
- Certifications: Mill Test Report (MTR) available upon request
Applications
- Construction: Base plates for columns and posts - provides a wide, stable foundation.
- Heavy Equipment: Mounting plates and frames - withstands high loads and vibration.
- Transportation: Trailer frame cross-members and chassis reinforcement - excellent strength and weldability.
- Industrial Machinery: Die components and tooling bases - offers a robust and stable platform.
Target Users
Fabricators, welders, structural engineers, and heavy equipment manufacturers rely on A36 flat bar for its strength and versatility in industrial and construction projects throughout the Los Angeles area.
Finish Options
This product comes standard with a hot rolled mill finish, characterized by a blue-grey, slightly rough surface with a layer of mill scale from the manufacturing process. This scale must be removed by grinding or blasting before painting or coating. Contact our Los Angeles sales team for custom finish inquiries or processing services.
How to Measure
Flat bar is measured by its Width (the wider flat face) and its Thickness (the narrower edge). Use a tape measure or calipers for an accurate reading.
Example: To order this flat bar, specify "A36 Hot Rolled Flat Bar, 5" x 3/4" x 20 feet".
Order Checklist
- Product name and required dimensions (5" x 3/4" x 240")
- Material specification and quantity
- Confirm grade (A36) meets structural requirements
- Surface finish requirements (Hot Rolled Mill Finish)
- Certifications required (Mill Test Report)
- Special handling or cutting requirements
Quick Facts
- Product
- Hot Rolled Steel Flat Bar - 5 Inch X 3/4 Inch
- Material
- A36 Steel
- Standards
- ASTM A36
- Key Properties
- 36,000 PSI yield, excellent weldability, good machinability
- 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 5" x 3/4" size is available in 20-foot lengths for immediate pickup in Los Angeles.
Custom cutting services available.
Contact for Sizing

