304 Stainless Steel Bar

We specialize in the supply of 304 stainless steel bars, including round, square, flat, and hexagonal bars, with consistent quality and stable mechanical performance.
Based on application requirements, we support customized size, length, and surface finish, ensuring precise material matching for machining, fabrication, and structural use.

By Manufacturing Process:
Hot rolled 304 stainless steel bar, Cold drawn 304 stainless steel bar

By Bar Shape:
304 round bar, 304 square bar, 304 flat bar, 304 hexagonal bar

Specifications

304 Stainless Steel Bar

304 stainless steel bar is a widely used austenitic chromium-nickel stainless steel, known for its excellent corrosion resistance, good mechanical properties, and overall material stability.
With balanced strength, ductility, and weldability, 304 stainless steel bar is suitable for structural, machining, and corrosion-resistant applications across multiple industries.
It is often selected where long-term durability and material reliability are required in both indoor and outdoor environments.

Mechanical Properties (Typical)

Chemical Composition (Typical)

Heat Treatment of 304 Stainless Steel Bar

1、Solution Annealing

Temperature range: 1010–1120°C
Process: Rapid cooling in water or air after heating
Purpose: Restores corrosion resistance and ductility after cold working or welding

2、Stress Relieving

Applied after heavy machining or forming
Helps reduce residual stress and minimize distortion

3、Hardening

304 stainless steel cannot be hardened by heat treatment
Strength improvement is achieved through cold working only

4、Performance Balance

Proper heat treatment prevents sensitization and ensures stable performance in welded, machined, and pressure-bearing applications.

Features of 304 Stainless Steel Bar

Corrosion Resistance: Excellent resistance to oxidation and many chemical environments, suitable for long-term service.

Mechanical Balance: Provides a reliable balance of strength and ductility for machining and forming.

Weldability: Suitable for most welding processes without preheating.

Non-magnetic Property: Generally non-magnetic in annealed condition; slight magnetism may appear after cold working.

Material Stability: Maintains consistent performance across a wide temperature range.

Applications of 304 Stainless Steel Bar

Structural Components: frames, supports, anchors; recommended diameter: 10–80 mm.

Machinery Parts: shafts, fasteners, pins, and fittings; recommended cold drawn bars.

Food & Chemical Equipment: mixing shafts, connectors, processing components.

Architectural Applications: handrails, decorative structures, load-bearing elements.

General Fabrication: cutting, welding, machining, and forming operations.

FAQ – 304 Stainless Steel Bar

1、Is 304 stainless steel bar suitable for outdoor use?
Yes, it performs well in most outdoor environments except highly chloride-rich conditions.

2、Can 304 stainless steel bar be welded?
Yes, it has excellent weldability and usually does not require post-weld heat treatment.

3、Is 304 stainless steel bar magnetic?
It is non-magnetic in annealed condition but may become slightly magnetic after cold working.

4、What is the difference between 304 and 316 stainless steel bar?
316 offers improved corrosion resistance due to molybdenum addition, while 304 provides a more economical solution for general applications.