Hot Rolled Steel Flat Bar - 9 Inch X 1/2 Inch
A36 Hot Rolled Steel Flat Bar - 9" x 1/2"
This 9" x 1/2" hot rolled steel flat bar is a structural A36 grade with excellent weldability and strength. Meeting ASTM A36 standards with 36,000 PSI minimum yield, its substantial width is ideal for base plates, heavy supports, and general fabrication. In stock Los Angeles.
- A36 Carbon Steel Construction
- ASTM A36 Certified
- 58,000-80,000 PSI Tensile Strength
- Excellent Weldability
A36 hot rolled steel is a low-carbon structural steel formed at high temperatures, resulting in a scaly, blue-grey mill finish. It conforms strictly to ASTM A36 specifications, ensuring a minimum yield strength of 36,000 PSI for reliable structural performance. This grade's composition provides outstanding weldability with all common methods and good machinability for drilling, punching, and forming.
As a large-format flat bar, this 9-inch wide material provides a solid foundation for heavy-duty applications. It is frequently specified for machinery base plates, structural gussets, heavy equipment mounting brackets, trailer frame cross-members, and other components requiring significant surface area and strength.
Specifications
- Material: A36 Hot Rolled Steel
- Standards: ASTM A36
- Strength/Tensile: 58,000-80,000 PSI
- Dimensions: 9" Width x 1/2" Thickness x 240" Length
- Finish: Hot Rolled (Mill Finish)
- Certifications: Mill Test Report (MTR) Available
Applications
- Structural Engineering: Base plates for columns - provides a wide, stable footprint and easy-to-weld surface.
- Heavy Equipment: Mounting pads and supports - resists deformation under heavy loads.
- General Fabrication: Gussets and stiffeners for large frames - exceptional strength for reinforcing joints.
- Transportation: Trailer cross-members and chassis components - durable and cost-effective for structural use.
Target Users
Structural steel fabricators, welders, and heavy equipment manufacturers rely on A36 flat bar for its strength and versatility in demanding applications 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 mill scale. This scale should be removed before painting or coating. For specific project requirements, custom 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 a tape measure for width and calipers for thickness.
Example: To order this flat bar, specify "A36 Hot Rolled Flat Bar, 9" x 1/2" x 240"".
Order Checklist
- Product name and required dimensions (9" x 1/2" x 240")
- Material specification and quantity
- Confirm grade (A36) meets requirements
- Surface finish requirements (Hot Rolled Mill Finish)
- Certifications required (Mill Test Report)
- Special handling or delivery requirements
Quick Facts
- Product
- Hot Rolled Steel Flat Bar - 9 Inch X 1/2 Inch
- Material
- A36 Hot Rolled Steel
- Standards
- ASTM A36
- Key Properties
- 58k-80k PSI tensile, Excellent weldability, Good formability
- Primary Applications
- Base plates, structural supports, heavy equipment mounts
- 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 9" x 1/2" size is available in 240" (20 ft) lengths for immediate pickup in Los Angeles.
Custom cutting services available.
Contact for Sizing

