Stainless Steel Round 304 - 3-1/2 Inches
304 Stainless Steel Round Bar - 3-1/2" x 144"
This 3-1/2" diameter 304 Stainless Steel Round Bar is a versatile austenitic grade for structural and mechanical use. Conforming to ASTM A276, it offers 73,200 PSI tensile strength combined with excellent weldability and corrosion resistance, making it ideal for large-scale fabrications. In stock Los Angeles.
- 304 Stainless Steel Construction
- ASTM A276 Certified
- 73,200 PSI Tensile Strength
- Excellent Corrosion Resistance
Type 304 is the most widely used austenitic stainless steel, containing 18% chromium and 8% nickel for outstanding resistance to chemical and atmospheric corrosives. This cold drawn bar meets ASTM A276 specifications, providing a combination of 73,200 PSI tensile strength, high ductility, and excellent weldability. It is non-magnetic in the annealed condition and cannot be hardened by heat treatment.
As a large 3-1/2" diameter bar, this material is ideal stock for heavy-duty industrial applications. It is commonly machined into robust shafts, industrial rollers, large bushings, and structural supports where both strength and superior corrosion resistance are critical performance factors.
Specifications
- Material: 304 Stainless Steel
- Standards: ASTM A276
- Strength/Tensile: 73,200 PSI
- Dimensions: 3-1/2" Diameter x 144" Length
- Finish: Cold Drawn, Annealed
- Certifications: MTR Available
Applications
- Industrial Machinery: Heavy-duty shafts and axles - high strength and toughness for power transmission.
- Food & Beverage Processing: Large rollers and conveyor components - resists corrosion from food acids and cleaning agents.
- Architectural: Structural posts and supports - aesthetic appeal with long-term durability against weathering.
- Manufacturing: Forging stock and large machined fixtures - provides a solid, reliable base for custom parts.
Target Users
Machinists, fabricators, and structural engineers rely on 304 round bar for its blend of performance and versatility in industrial and architectural projects throughout the Los Angeles area.
Finish Options
This product comes standard with a cold drawn mill finish, which provides a smooth surface and tight dimensional tolerances. For applications requiring a specific aesthetic or improved precision, finishes such as polished or centerless ground may be available via special order. Contact our Los Angeles sales team for custom finish inquiries.
How to Measure
Round bar is measured by its diameter - the distance across the circular cross-section. Use calipers or a micrometer for an accurate reading.
Example: To order this round bar, specify "304 Stainless Round, 3-1/2 inch diameter".
Order Checklist
- Product name and required dimensions (3-1/2" x 144")
- Material specification and quantity
- Confirm grade (304) meets requirements
- Surface finish requirements (Cold Drawn, Annealed)
- Certifications required (Mill Test Report)
- Special handling or delivery requirements
Quick Facts
- Product
- Stainless Steel Round 304 - 3-1/2 Inches
- Material
- 304 Stainless Steel
- Standards
- ASTM A276
- Key Properties
- 73,200 PSI tensile, Excellent Corrosion Resistance, Excellent Weldability
- Primary Applications
- Heavy-duty shafts, Industrial rollers, Forging stock
- Location
- Los Angeles warehouse - Same-day pickup available
Available Sizes
We stock 304 Stainless Round Bar in diameters from 1/8" to 6" and lengths up to 144". This 3-1/2" x 144" size is available for immediate pickup in Los Angeles.
Custom cutting services available.
Contact for Sizing


