Hot Rolled Steel Flat Bar - 4 Inch X 7/8 Inch
A36 Hot Rolled Steel Flat Bar - 4 Inch X 7/8 Inch
A structural 4" x 7/8" A36 Hot Rolled Steel Flat Bar conforming to ASTM A36. This bar provides a minimum yield strength of 36,000 PSI and excellent weldability, making it ideal for heavy fabrication, base plates, and structural supports. In stock Los Angeles.
- A36 Carbon Steel Construction
- ASTM A36 Certified
- 58,000-80,000 PSI Tensile Strength
- Excellent Weldability
Hot rolled A36 steel flat bar is formed at elevated temperatures, resulting in a product with a distinctive blue-grey, scaly finish and slightly rounded edges. This economical process makes it a go-to material for general fabrication and structural work. Conforming to ASTM A36, it has a minimum yield strength of 36,000 PSI and excellent weldability, suitable for MIG, stick, and other common welding methods.
As a large-dimension bar, this 4-inch wide steel flat is engineered for heavy-duty structural applications. It is commonly specified for machinery base plates, structural gussets and braces, trailer frames, and die components where maximum strength and load-bearing capacity are essential for project integrity.
Specifications
- Material: A36 Hot Rolled Steel
- Standards: ASTM A36
- Strength/Tensile: 58,000-80,000 PSI
- Dimensions: 4" Width x 7/8" Thickness x 240" Length
- Finish: Hot Rolled (Mill Finish)
- Certifications: MTR Available
Applications
- Heavy Fabrication: Base plates for columns - provides a stable, weldable foundation for structural loads.
- Industrial Equipment: Frame components and mounts - excellent strength-to-weight ratio for robust machinery.
- Transportation: Trailer cross-members and chassis reinforcement - withstands vibration and heavy loads.
- Construction: Structural braces and gussets - offers a durable and stable material for building frames.
Target Users
Fabricators, welders, structural engineers, and industrial maintenance teams rely on A36 flat bar for its strength and versatility in construction and equipment manufacturing throughout the Los Angeles area.
Finish Options
This product comes standard with a hot rolled (mill) finish, characterized by a blue-grey, scaly surface. This scale must be removed by grinding or blasting before painting or coating. For specific project requirements, other finishes such as pickled and oiled 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 (the larger dimension) and its Thickness (the smaller dimension). Use a tape measure or calipers for accurate measurement.
Example: To order this flat bar, specify "A36 Hot Rolled Flat Bar, 4 inch by 7/8 inch x 240 inch length".
Order Checklist
- Product name and required dimensions (4" x 7/8" x 240")
- Material specification and quantity
- Confirm grade (A36) meets requirements
- Surface finish requirements (Hot Rolled)
- Certifications required (Mill Test Report)
- Special handling or delivery requirements
Quick Facts
- Product
- Hot Rolled Steel Flat Bar - 4 Inch X 7/8 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, heavy fabrication
- 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 4" x 7/8" size is available for immediate pickup in Los Angeles.
Custom cutting services available.
Contact for Sizing