Description
xBrass Square Bar
Solid, four-sided brass square bar and brass square rod with equal flat faces — measured across flats and supplied in straight lengths or cut to length for keys, shafts, brackets, frames, grilles and decorative work.
Solid Square Stock
Equal Four Sides
Across Flats
Straight or Cut Lengths
Clean Machinable Finish
What Is Brass Square Bar?
Definition and Overview
Brass square bar is a solid, straight metal bar with a square cross-section — four equal flat faces meeting at right angles. It is produced by extrusion or drawing and is valued for its symmetry, flat mounting faces and clean machinability. In trade language it is also called brass square rod, square brass bar, brass square stock or solid brass square bar.
A square section is measured across flats (the distance between two opposite flat faces), which distinguishes it from round bar (measured by diameter), flat bar (measured width × thickness) and hex bar (six-sided across flats). Brass square bar machines, mills, turns, drills, files and polishes reliably, with the warm golden finish that makes brass equally suitable for working parts and visible metalwork. Short cut lengths are ordered as brass square block.
Key Characteristics of Brass Square Bar
- Four equal flat faces: the symmetrical square section mounts, seats and aligns cleanly in fixtures and frames.
- Good machinability: brass square stock mills, turns and drills smoothly with low tool wear.
- Rigid and straight: solid square bar resists twist and holds a true line for rails and structural trim.
- Natural corrosion resistance: copper-based brass square bar does not rust in normal atmosphere.
- Attractive finish: polished or brushed square brass bar gives crisp edges and a premium look.
- Formable in soft temper: softer square rod can be bent, headed and fabricated without cracking.
Why Choose Brass Square Bar?
Brass square bar combines a rigid, symmetrical section with easy machining and a classic brass finish for both functional and decorative parts.
Easy to Machine
Brass square stock mills, turns and drills cleanly into precise square parts.
Flat Stable Faces
Four equal faces seat and mount squarely without rolling or twisting.
Corrosion Resistant
Square brass bar resists rust and moisture indoors and outdoors.
Crisp Decorative Look
Sharp, even edges polish beautifully for trim, grilles and metalwork.
Rigid & True
Solid square section stays straight for rails, frames and alignments.
Hygienic Surface
The copper-based surface naturally limits microbial build-up on touch parts.
Conductive
Square brass stock serves for connectors, terminals and grounding parts.
Recyclable
Brass square rod is fully recyclable without losing its properties.
Brass Square Bar Sizes, Edges, Tempers & Finishes
Brass square bar is specified by its across-flats dimension and supplied in straight lengths, cut to length on request.
Standard Size Range
| Product | Dimension | Lengths | Custom Cutting |
|---|---|---|---|
| Brass Square Bar / Brass Square Rod | Across flats, in a range of metric and inch sizes | 1 ft, 3 ft, 6 ft, 12 ft straight lengths | Yes — cut to your length |
Edges and Corners
Brass square bar is normally supplied with crisp square (sharp) corners for a precise, traditional look; lightly rounded or radius-corner square stock can be specified where smoother handling is preferred.
Tempers
Soft brass square rod forms and bends most easily, half-hard is the balanced default for general fabrication, and hard square bar gives the stiffest, straightest result for rails, keys and load-bearing parts.
Surface Finishes
As-Drawn / Mill
Standard smooth mill finish, uniform and ready for machining.
Polished
Mirror-bright polished square brass bar for visible decorative parts.
Brushed / Satin
Directional brushed finish that hides fingerprints and looks refined.
Typical Material Properties
- Density: approximately 8.4–8.5 g/cm³ for typical brass.
- Melting range: approximately 900–940°C (1650–1720°F).
- Electrical conductivity: roughly 25–45% IACS depending on composition.
- Thermal conductivity: roughly 80–120 W/(m·K) at room temperature.
- Forming behaviour: soft to half-hard tempers form best; hard stock stays rigid and true.
Round, flat and hex brass bar are available separately. For short, cut pieces and cubes rather than long bars, see the Brass Square Block range; this page covers the long brass square bar form.
Machining & Fabrication with Brass Square Bar
The equal flat faces of brass square stock make it easy to hold, align and machine into precise square components.
How Brass Square Bar Is Worked
Brass square rod mills and turns cleanly, drills accurate holes, cuts keyways and slots, and files or sands to a crisp edge. Its flat faces clamp securely in a vice or fixture for repeatable CNC work. In softer tempers it bends into brackets and frames, and it solders and brazes into neat, strong joints before a final polish.
Working Tips for Brass Square Stock
- Specify across flats clearly so the square section matches the drawing.
- Use the flat faces to seat and align parts during milling and assembly.
- Choose hard temper for straight rails and keys, soft temper for formed parts.
- Use sharp tooling for clean corners and a bright finish on square brass bar.
- Prefer brazing or soldering for the cleanest joints in brass square rod.
Common Fabricated Forms
Key stock and drive bars, square shafts and spindles, brackets and frames, grilles and balusters, hinge components, jigs and fixtures, decorative inlay and ornamental metalwork all begin as brass square bar.
Applications of Brass Square Bar
Brass square bar is used wherever a symmetrical, rigid square section with a clean finish is required.
Key Stock & Drives
Square key stock, drive bars and torque fittings machined from brass square rod.
Shafts & Spindles
Square shafts, stems, spindles and valve keys turned or milled from square stock.
Brackets & Frames
L-brackets, structural frames, braces and reinforcing sections in square brass bar.
Grilles & Railings
Balusters, grille bars, gates and railings using straight, decorative square sections.
Trim & Inlay
Crisp edge banding, square inlay strips and border detail in polished square bar.
Hinges & Hardware
Hinge pins and leaves, hasps, catches and door hardware cut from square stock.
Jigs & Fixtures
Alignment bars, locators, stops and fixture components that seat on flat faces.
Machined Square Parts
Custom CNC parts, spacers, couplings and fittings milled from brass square bar.
Furniture & Decor
Furniture bands, foot rails, ornamental strips and craft metalwork in brass finish.
How Brass Square Bar Is Made
Brass square bar follows a controlled process to deliver a straight, true square section.
1
Melting
Copper and zinc are melted and blended to the target brass composition.
2
Casting Billets
The brass is cast into solid billets ready for hot forming.
3
Extrusion
Billets are extruded through square dies to form the four-sided profile.
4
Cold Drawing
The square rod is drawn to final across-flats size and a smooth surface.
5
Inspect & Cut
Each brass square bar is straightened, checked and cut to length.
Quality Control at Every Stage
In-Process and Final Checks
Across-flats dimension, corner condition, straightness and surface are monitored throughout production, and each finished brass square bar receives a final check of size, length, edge and finish before cutting and packaging, so every length of square brass stock leaves in consistent, true condition.
Value-Added Services for Brass Square Bar
Beyond raw brass square bar, secondary processing delivers pieces ready for assembly.
Cut to Length
Brass square bar cut to your exact length as ready-to-use pieces.
Milling & Turning
CNC milling and turning of square brass stock to drawing.
Keyways & Slots
Keyways, slots, holes and flats machined into brass square rod.
Bending & Forming
Square bar bent into brackets, frames, grilles and ornamental shapes.
Polishing
Buffing, polishing and satin finishing of the four brass faces.
Custom Packaging
Bundled, wrapped or crated square bar with clear labeling.
Quality Assurance for Brass Square Bar
Our Commitment
Every length of brass square bar is backed by consistent process controls from incoming stock to final shipment. Square brass bar is drawn from reputable mills and kept fully traceable, so the square stock you receive performs repeatably in machining and fabrication.
Documentation
Brass square bar can be supplied with certificates of compliance and material test reports for composition and properties, supporting traceability and standard conformance for your quality records.
Checks Performed
- Compositional verification of the brass
- Across-flats dimension inspection of each bar
- Straightness check over the full length
- Corner and edge condition inspection
- Surface quality and finish inspection
- Length verification on cut-to-length stock
- Temper confirmation for forming or rigidity
- Packaging integrity before dispatch
Packaging, Shipping & Returns
Secure Packaging
- Bundled bars: multiple brass square rods banded with edge protection to prevent scuffing.
- Individual wrapping: polished or decorative square brass bar is wrapped to protect the faces.
- Wooden crating: long or heavy square stock is braced in crates for safe transit.
- Clear labeling: each pack is marked with across-flats size, length, temper and quantity.
Shipping & Delivery Time
Processing: in-stock standard brass square bar orders are dispatched within 1–5 business days. Custom-cut or made-to-order square stock needs extra processing time that increases with fabrication difficulty.
Transit: after the order ships, delivery normally takes 7–15 days.
Custom Order Returns
Custom brass square bar is cut or processed to your exact dimensions. Once cutting or fabrication has started, a custom order cannot be cancelled, returned or exchanged — please confirm across-flats size, corner type, temper and length before ordering.
Frequently Asked Questions About Brass Square Bar
What is brass square bar used for?
Brass square bar is used for key stock and drive bars, square shafts and spindles, brackets and frames, grilles and railings, hinge hardware, jigs and fixtures, decorative inlay and a wide range of machined square parts. Its four equal flat faces seat and align cleanly, which makes it a favourite for precise fabrication.
What is the difference between brass square bar and brass square rod?
The terms are used interchangeably for the same solid four-sided material. Smaller across-flats sizes are often called brass square rod and larger sizes brass square bar — both are equal-sided square stock measured across flats.
How is brass square bar measured?
It is measured across flats — the distance between two opposite flat faces — in millimetres or inches. This differs from round bar (diameter) and flat bar (width × thickness), while hex bar is also measured across flats but has six sides.
What is the difference between square bar and square block?
Brass square bar is a long, straight section supplied in standard lengths. Brass square block is the same square stock cut into short lengths, cubes or machining blanks. If you need short cut pieces rather than long bars, choose the Brass Square Block range.
Can brass square bar be cut to length?
Yes. Square brass bar is supplied in standard straight lengths and can be cut to your exact length as ready-to-use pieces, reducing scrap and setup time.
Can brass square bar be bent?
Yes, particularly in soft or half-hard temper. Square brass rod bends on suitable tooling into brackets, frames and ornamental shapes; use an adequate bend radius and support the flat faces to keep the section true.
Sharp or radius corners?
Brass square bar normally comes with crisp square (sharp) corners for a precise, traditional look. Choose radius (rounded) corners for smoother handling or a softer visual style.
Can brass square bar be used as key stock?
Yes. Solid square brass stock is commonly machined into square key stock, drive bars and torque fittings, using the equal flat faces to seat squarely in keyways and couplings.
Is brass square bar suitable outdoors?
Yes. Brass square bar resists atmospheric and moisture corrosion and does not rust. A clear lacquer helps preserve a polished finish in long-term outdoor or marine-adjacent settings.
What is the difference between brass and bronze square bar?
Brass square bar is copper-zinc based, easy to machine and form, bright golden and lower cost. Bronze square bar is copper-tin based, generally harder and more wear-resistant but pricier and less free-forming. Choose by the application.
Can brass square bar be welded or soldered?
Brass square stock solders and brazes very cleanly, which is the preferred joining method. Fusion welding is possible but needs care because of the zinc content at high temperature.
Are material test reports available?
Yes. Material test reports and certificates of compliance can be provided with brass square bar orders for composition, properties and traceability in your quality records.
Shipping & Return
xReturns Policy
You may return items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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