Stainless Steel Square Tube 304 - 4 Inches X 0.25
304 Stainless Steel Square Tube - 4" x 4" x 0.250" Wall
This 4" x 4" x 0.250" wall 304 Stainless Steel Square Tube provides excellent structural integrity for heavy-duty applications. Conforming to ASTM A269, it delivers 73,200 PSI tensile strength with superior weldability and corrosion resistance for frames and supports. In stock Los Angeles.
- 304 Stainless Steel Construction
- ASTM A269 Certified
- 73,200 PSI Tensile Strength
- Excellent Weldability & Corrosion Resistance
Type 304 is the most common austenitic stainless steel, containing 18% chromium and 8% nickel for superior resistance to oxidation and corrosion. It is non-magnetic in the annealed condition and provides an excellent balance of strength, toughness, and fabrication characteristics. Conforming to ASTM A269, this welded square tube is a reliable choice for structural and decorative projects where environmental exposure is a concern.
As a large-profile tube, this 4-inch square size offers exceptional strength-to-weight for demanding jobs. It is commonly used for structural columns, heavy equipment frames, industrial supports, and large-scale architectural elements where both load-bearing capacity and a clean aesthetic are required.
Specifications
- Material: 304 Stainless Steel
- Standards: ASTM A269
- Strength/Tensile: 73,200 PSI
- Dimensions: 4" x 4" Side, 0.250" Wall, 20' Length
- Finish: Annealed Mill Finish
- Certifications: MTR Available
Applications
- Industrial Framing: Heavy equipment frames and machinery supports - High strength-to-weight ratio and excellent weldability.
- Architectural: Structural support columns and large railings - Superior corrosion resistance and clean aesthetic lines.
- Food & Beverage: Equipment bases and conveyor structures - Resists corrosion from harsh cleaning solutions.
- Marine: Non-critical structural components (freshwater) - Withstands moisture and environmental exposure.
Target Users
Fabricators, structural engineers, and equipment manufacturers rely on 304 stainless square tube for its strength and durability in industrial and architectural projects throughout the Los Angeles area.
Finish Options
This product comes standard with an annealed mill finish, which may have some surface imperfections from manufacturing. For architectural or cosmetic applications, it can be polished to a #4 satin (180 grit) or #8 mirror finish. Contact our Los Angeles sales team for custom polishing inquiries.
How to Measure
Square tube is measured by its outer dimensions (Side A x Side B) and the wall thickness. Use a tape measure for the sides and calipers for an accurate wall measurement.
Example: To order this square tube, specify "304 Stainless Square Tube, 4 inch x 4 inch with a 0.250 inch wall".
Order Checklist
- Product name and required dimensions (4" x 4" side, 0.250" wall)
- 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 Square Tube 304 - 4 Inches X 0.25
- Material
- 304 Stainless Steel
- Standards
- ASTM A269
- Key Properties
- 73,200 PSI tensile, Excellent Weldability, Excellent Corrosion Resistance
- Primary Applications
- Structural Columns, Heavy Frames, Industrial Supports
- Location
- Los Angeles warehouse - Same-day pickup available
Available Sizes
We stock 304 Stainless Square Tube in sizes from 1/2" to 6" and various wall thicknesses. This 4" x 4" x 0.250" size is available for immediate pickup in Los Angeles.
Custom cutting services available.
Contact for Sizing