Hot Rolled Steel Flat Bar - 1-1/4 Inch X 5/16 Inch
Hot Rolled Steel Flat Bar - 1-1/4 Inch X 5/16 Inch
This 1-1/4" x 5/16" hot rolled flat bar is a structural A36 steel with excellent weldability and strength. Conforming to ASTM A36, it has a minimum yield of 36,000 PSI, making it ideal for frames, supports, and general fabrication. In stock Los Angeles.
- A36 Hot Rolled Steel Construction
- ASTM A36 Certified
- 58,000-80,000 PSI Tensile Strength
- Excellent Weldability & Formability
A36 hot rolled steel is a low-carbon structural grade produced by forming steel at elevated temperatures. This process results in a material with slightly rounded edges and a scaly, blue-grey mill finish. It meets ASTM A36 specifications, ensuring a minimum yield strength of 36,000 PSI, and its composition provides excellent weldability and good machinability for easy fabrication.
As a medium-width bar, this 1-1/4" size is a versatile choice for structural bracing, machine ways, wear strips, and base plates. Its combination of strength and workability makes it a go-to material for fabricators building equipment frames, trailer components, and industrial supports.
Specifications
- Material: A36 Hot Rolled Steel
- Standards: ASTM A36
- Strength/Tensile: 58,000-80,000 PSI
- Dimensions: 1-1/4" Width x 5/16" Thickness x 20' Length
- Finish: Hot Rolled (Mill Finish)
- Certifications: MTR Available
Applications
- General Fabrication: Support braces and brackets - Excellent weldability and strength-to-weight ratio.
- Machinery & Equipment: Machine ways and wear strips - Good durability and easily drilled for mounting.
- Transportation: Trailer frame components and cross-members - High strength for structural integrity.
- Construction: Base plates and shims - Cost-effective and provides a stable foundation.
Target Users
Fabricators, welders, and maintenance technicians rely on A36 flat bar for its dependable performance and versatility in structural and repair applications throughout the Los Angeles area.
Finish Options
This product comes standard with a hot rolled mill finish, characterized by a scaly, blue-grey surface. This scale must be removed before painting or coating. For projects requiring a cleaner surface, pickling and oiling 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). The width is the larger of the two cross-sectional dimensions.
Example: To order this flat bar, specify "Hot Rolled Steel Flat Bar, 1-1/4" x 5/16" x 20'".
Order Checklist
- Product name and required dimensions (1-1/4" x 5/16" x 20')
- 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 - 1-1/4 Inch X 5/16 Inch
- Material
- A36 Hot Rolled Steel
- Standards
- ASTM A36
- Key Properties
- 58,000 PSI tensile, Excellent Weldability, Good Formability
- Primary Applications
- Structural Bracing, Machine Ways, General 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 1-1/4" x 5/16" size is available for immediate pickup in Los Angeles.
Custom cutting services available.
Contact for Sizing