Stainless Steel Flat Bar 304 - 1-1/4 Inch X 5 Inch
Stainless Steel Flat Bar 304 - 1-1/4 Inch X 5 Inch
This 1-1/4" x 5" 304 Stainless Steel Flat Bar is a versatile, corrosion-resistant material for demanding applications. Conforming to ASTM A276, it offers 73,200 PSI tensile strength and excellent weldability, making it ideal for structural supports, braces, and heavy fabrication. In stock Los Angeles.
- 304 Stainless Steel Construction
- ASTM A276 Certified
- 73,200 PSI Tensile Strength
- Excellent Corrosion Resistance & Weldability
Type 304 stainless steel is the most common austenitic chromium-nickel alloy, valued for its exceptional blend of strength, corrosion resistance, and ductility. Conforming to ASTM A276, this material is non-magnetic in its annealed state and maintains its properties in a wide range of environments. Most stock is dual-certified as 304/304L, which enhances weldability by minimizing carbide precipitation at the heat-affected zone.
As a large 1-1/4" x 5" profile, this flat bar provides substantial strength and rigidity. Its dimensions make it an ideal choice for fabricating heavy-duty base plates, industrial equipment mounting, load-bearing structural supports, and die components where both corrosion resistance and high strength are critical requirements for performance and longevity.
Specifications
- Material: 304 Stainless Steel
- Standards: ASTM A276
- Strength/Tensile: 73,200 PSI
- Dimensions: 1-1/4" Thickness x 5" Width x 144" Length
- Finish: Annealed Mill Finish
- Certifications: Mill Test Report (MTR) Available
Applications
- Heavy Fabrication: Base plates and structural gussets - excellent strength and weldability for critical connections.
- Industrial Equipment: Mounting pads and machine framework - resists corrosion from industrial atmospheres and cleaning agents.
- Food & Beverage: Heavy equipment supports and platforms - hygienic surface and resistance to organic acids in a robust profile.
- Architecture & Construction: Structural lintels and supports - provides a clean appearance with long-term durability in exposed areas.
Target Users
Fabricators, structural engineers, and machine builders rely on 304 Flat Bar for its blend of strength and corrosion resistance in industrial, architectural, and food processing applications throughout the Los Angeles area.
Finish Options
This product comes standard with an annealed mill finish, showcasing the material's natural, dull gray appearance suitable for most industrial and structural uses. For aesthetic requirements, it can be mechanically polished to a brushed (#4) or mirror (#8) finish. Contact our Los Angeles sales team for custom finish inquiries.
How to Measure
Flat bar is measured by its Thickness (A) and Width (B). The third dimension is its overall length.
Example: To order this flat bar, specify "304 Stainless Flat Bar, 1-1/4" x 5" x 144" length".
Order Checklist
- Product name and required dimensions (1-1/4" x 5" x 144")
- Material specification and quantity
- Confirm grade (304) meets requirements
- Surface finish requirements (Annealed Mill Finish)
- Certifications required (Mill Test Report)
- Special handling or delivery requirements
Quick Facts
- Product
- Stainless Steel Flat Bar 304 - 1-1/4 Inch X 5 Inch
- Material
- 304 Stainless Steel
- Standards
- ASTM A276
- Key Properties
- 73,200 PSI tensile, Excellent Corrosion Resistance, Excellent Weldability
- Primary Applications
- Base plates, heavy structural supports, industrial framework
- Location
- Los Angeles warehouse - Same-day pickup available
Available Sizes
We stock 304 Stainless Flat Bar in a wide range of widths and thicknesses for structural and fabrication needs. This 1-1/4" x 5" x 144" size is available for immediate pickup in Los Angeles.
Custom cutting services available.
Contact for Sizing


