The stainless steel square bar has defined square edges with accurate dimensions throughout its length. Type 304 and 303 stainless square bar is a versatile material; suitable for indoor and outdoor applications where durable support and corrosion resistance are required (303 is slightly less corrosion-resistant than 304, however, 303 is more machinable than 304). Square bar is a popular choice for a wide range of projects that include frameworks, braces, railings, supports, and more. Cut2Size Metals offers custom-cutting services and same-day processing on most orders.

• Standard sizes & custom cuts: Stock square bar is 12 ft. and can be custom cut to any length.
• Tolerances: Our standard tolerance for custom cuts is +/- 1/16". If you need a tighter tolerance, call us!
• Volume discounts: Unit prices drop on most custom-cut products when you increase the quantities.
• Save on shipping: Save money on shipping full-length flats with the "Cut in 1/2 to Ship" option. Learn more >

Spec charts & available sizes >
Alloys, common applications & finishes >
Same-day shipping on most orders & order handling explained >

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Alloys & Finishes

Alloys

303 Stainless Steel
Type 303 is a versatile machining grade of stainless steel known for its exceptional ease of machining, grinding, and polishing. It is the most free-machining option available. 303 stainless steel offers oxidation resistance at elevated temperatures up to 1700°F and a melting point of 1400°F.

Characteristics of alloy 303:
Machinability = Excellent
Corrosion Resistance = Good
Weldability = Not recommended
Bending/Forming = Fair
Magnetic = No

Common applications of alloy 303:

• Projects requiring extensive machining.
• Supports, beams, and railings.
• Screw machining.
• Fasteners and fittings.
• Parts with intricate shapes.
• Pump and valve parts.
• Bushings and shafts.

304 Stainless Steel
Type 304 is the most commonly used stainless steel alloy. It stands out with its strong formability and excellent weldability. It can be easily roll-formed or bent to suit specific needs making it a top choice for various applications. 304 offers reliable corrosion resistance and performs well in both chemical and atmospheric conditions.

Characteristics of alloy 304:
Machinability = Fair
Corrosion Resistance = Good
Weldability = Excellent
Bending/Forming = Good
Magnetic = No

Common applications of alloy 304:

• Best general-purpose stainless steel and is suitable for a broad range of applications.
• Food processing equipment, including containers and conveyors.
• Kitchen appliances, such as sinks, cookware, countertops, and backsplashes.
• Architectural elements like railings and panels.
• Chemical processing equipment, including tanks and piping.
• Medical instruments and devices.

Finishes

What is a Mill Finish?
Mill finish means that items come to exactly as they are finished at the mill. All materials can have some surface scratches and may have a dull finish. If you want a certain type of finish on your material, give us a call at 812-429-1634.