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Brass Square Bars
Product Overview
Brass Square Bars manufactured by R V Metal Corporation are precision-engineered solid brass sections produced from high-quality copper-zinc alloys to deliver excellent strength, machinability, and corrosion resistance. These square brass bars are widely used in electrical components, architectural fittings, decorative hardware, precision machining parts, valve components, and industrial fabrication where dimensional accuracy and surface finish are critical. Available in multiple brass grades, tempers, and tight dimensional tolerances, our brass square bars ensure consistent performance in both hot-worked and cold-machined applications. R V Metal Corporation supplies standard as well as customised sizes to meet OEM, EPC, and export requirements across diverse industries.
Technical Specifications
| Technical Specifications – Brass Square Bars | |
|---|---|
| Product Form | Solid Square Bars |
| Manufacturing Process | Hot Extruded / Cold Drawn / Precision Machined |
| Material Grades | CuZn37, CuZn30, CuZn39Pb3, CuZn40Pb2, DZR Brass, Lead-Free Brass (as applicable) |
| Standard Sizes | Across Flats (AF): 5 mm to 100 mm (larger sizes on request) |
| Length | Standard: 3 m / 4 m / 6 m | Cut-to-length as per requirement |
| Dimensional Tolerance | As per ASTM B16 / EN 12164 / IS 319 (custom tolerances available) |
| Straightness | ≤ 1/1000 of bar length (typical) |
| Surface Finish | Mill Finish / Smooth Drawn / Polished (optional) |
| Temper / Condition | Soft (Annealed) / Half-Hard / Hard |
| Density | Approx. 8.40 – 8.60 g/cm³ (grade dependent) |
| Machinability | Excellent (especially leaded and free-cutting grades) |
| Electrical Conductivity | 20 – 30 % IACS (grade dependent) |
| Corrosion Resistance | Good to Excellent (enhanced in DZR and naval grades) |
| Applications | Machined Components, Electrical Parts, Valves, Fasteners, Decorative Hardware, Industrial Fabrication |
| Supply Condition | Straight Lengths / Bundled / Protective Packing for Export |
Chemical Composition
| Chemical Composition – Brass Square Bars | |||||
|---|---|---|---|---|---|
| Grade / Alloy | Copper (Cu) % | Zinc (Zn) % | Lead (Pb) % | Iron (Fe) % | Others (Max) |
| CuZn37 (Common Brass) | 62.0 – 64.0 | Balance | ≤ 0.05 | ≤ 0.05 | ≤ 0.20 |
| CuZn30 (Cartridge Brass) | 69.0 – 71.0 | Balance | ≤ 0.05 | ≤ 0.05 | ≤ 0.20 |
| CuZn39Pb3 (Free-Cutting Brass) | 57.0 – 59.0 | Balance | 2.5 – 3.5 | ≤ 0.35 | ≤ 0.30 |
| CuZn40Pb2 | 58.0 – 60.0 | Balance | 1.5 – 2.5 | ≤ 0.35 | ≤ 0.30 |
| DZR Brass (CuZn36Pb2As) | 60.0 – 63.0 | Balance | 1.5 – 2.5 | ≤ 0.10 | As: 0.02 – 0.15 |
| Lead-Free Brass | ≥ 62.0 | Balance | ≤ 0.10 | ≤ 0.10 | Sn / Si / Al ≤ 0.30 |
UNS Codes & Grades
| UNS Codes & Grades – Brass Square Bars | |||
|---|---|---|---|
| UNS Code | Common Grade / Designation | Composition Type | Typical Applications |
| C26000 | Cartridge Brass (70/30) | CuZn30 | Electrical components, decorative bars, cold-formed parts |
| C27000 | Yellow Brass (65/35) | CuZn35 | General engineering, fasteners, architectural sections |
| C27200 | Common Brass | CuZn37 | Machined parts, fittings, structural brass sections |
| C28000 | Muntz Metal | CuZn40 | Marine fittings, heavy-duty mechanical parts |
| C36000 | Free Cutting Brass | CuZn36Pb3 | High-speed machining, precision turned components |
| C37700 | Forging Brass | CuZn39Pb3 | Hot forged components, valves, plumbing hardware |
| C38500 | Architectural Brass | CuZn57Pb3 | Decorative square bars, furniture and interior fittings |
| C69300 | DZR Brass | CuZn36Pb2As | Potable water systems, plumbing and sanitary fittings |
| C27450 | Lead-Free Brass | CuZn38Sn | Eco-compliant components, potable water applications |
Mechanical, Physical & Fabrication Properties
| Property | C37700 / CW617N | C38500 | CW602N (DZR) | C46400 (Naval Brass) | Mn–Al High Strength Brass |
|---|---|---|---|---|---|
| Typical Tensile Strength (MPa) | 440 – 540 | 420 – 520 | 500 – 600 | 520 – 620 | 650 – 750 |
| Yield Strength (MPa) | 180 – 250 | 170 – 240 | 220 – 300 | 250 – 320 | 350 – 450 |
| Elongation (%) | 20 – 30 | 18 – 28 | 18 – 25 | 15 – 22 | 10 – 18 |
| Hardness (HB) | 90 – 130 | 85 – 125 | 110 – 150 | 130 – 160 | 160 – 220 |
| Density (g/cm³) | 8.40 | 8.45 | 8.35 | 8.50 | 7.90 – 8.10 |
| Hot Forging Temperature (°C) | 650 – 750 | 650 – 740 | 680 – 780 | 700 – 800 | 720 – 850 |
| Forgeability | Excellent | Excellent | Very Good | Good | Moderate |
| Machinability (%) | 90 – 100 | 100 | 60 – 70 | 50 – 60 | 30 – 45 |
| Hot Cracking Resistance | High | High | Very High | Very High | Moderate |
| Dezincification Resistance | Low | Low | Excellent | Excellent | Good |
| Typical Forged Products | Valves, fittings | Complex machined forgings | Potable water valves | Marine hardware | Automotive & load-bearing parts |
| Temper-wise Mechanical Property Split – Brass Square Bars (Typical Ranges) | |||||
|---|---|---|---|---|---|
| Temper | Condition | Tensile Strength | Yield Strength (0.2%) | Elongation | Hardness |
| O | Annealed (Soft) | 300 – 380 MPa | 120 – 180 MPa | 30 – 45 % | 60 – 90 HB |
| H02 | Half-Hard (Cold Worked) | 380 – 460 MPa | 180 – 260 MPa | 18 – 30 % | 90 – 120 HB |
| H04 | Hard (Cold Worked) | 460 – 520 MPa | 260 – 320 MPa | 10 – 18 % | 120 – 140 HB |
| H08 | Extra Hard / Spring (High Cold Work) | 520 – 600 MPa | 320 – 380 MPa | 5 – 10 % | 140 – 160 HB |
| Note: Values are typical ranges and depend on alloy family (CuZn30 / CuZn37 / Free-Cutting / Forging / DZR), section size, and processing route. For project approval, supply is generally confirmed by MTC / EN 10204 3.1 with measured tensile and hardness. | |||||
Common Names & International Identifiers
| Common Names & International Identifiers – Brass Square Bars | ||||
|---|---|---|---|---|
| Region / Standard Body | Common Name | Grade / Designation | UNS No. | Remarks |
| ASTM / UNS (USA) | Cartridge Brass Square Bar | ASTM B16 / B134 | C26000 | Good cold workability, moderate strength |
| ASTM / UNS (USA) | Common Brass Square Bar | ASTM B16 / B134 | C27000 | Balanced strength and machinability |
| ASTM / UNS (USA) | Free Cutting Brass Square Bar | ASTM B16 / B124 | C36000 | Excellent machinability (leaded) |
| EN (Europe) | Brass Square Bar | EN CW508L (CuZn37) | - | Equivalent to C27200 |
| EN (Europe) | Cartridge Brass Square Bar | EN CW505L (CuZn30) | - | High ductility, deep drawing grade |
| EN (Europe) | Free Machining Brass Square Bar | EN CW614N (CuZn39Pb3) | - | High-speed machining applications |
| IS (India) | Brass Square Bar | IS 319 (Type I / II) | - | General engineering and electrical use |
| JIS (Japan) | Brass Square Bar | C2700 / C3604 | - | Industrial and precision components |
| DIN (Germany) | Ms Brass Square Bar | DIN CuZn37 / CuZn39Pb3 | - | Traditional European designation |
Standards & International Equivalents
| Standards & International Equivalents – Brass Square Bars | |||||
|---|---|---|---|---|---|
| Country / Region | Standard | Grade / Designation | Nominal Composition | UNS Equivalent | Remarks / Typical Use |
| USA | ASTM B16 / ASTM B134 | Cartridge Brass | CuZn30 | C26000 | High ductility, cold forming, electrical parts |
| USA | ASTM B16 / ASTM B134 | Common Brass | CuZn37 | C27000 / C27200 | General engineering applications |
| USA | ASTM B16 / ASTM B124 | Free Cutting Brass | CuZn39Pb3 | C36000 | Excellent machinability |
| Europe | EN 12164 / EN 12165 | CW505L | CuZn30 | C26000 | Equivalent to Cartridge Brass |
| Europe | EN 12164 / EN 12165 | CW508L | CuZn37 | C27200 | Structural and decorative use |
| Europe | EN 12164 / EN 12165 | CW614N | CuZn39Pb3 | C36000 | High-speed machining grade |
| India | IS 319 : 2007 | Type I / Type II | CuZn30 / CuZn37 | C26000 / C27200 | Electrical, plumbing, hardware components |
| Japan | JIS H3250 | C2600 | CuZn30 | C26000 | Electrical and precision parts |
| Japan | JIS H3250 | C3604 | CuZn39Pb3 | C36000 | Free machining brass components |
| Germany | DIN 17660 | CuZn37 / CuZn39Pb3 | Standard Brass Grades | C27200 / C36000 | European industrial standard |
Applications
| Applications of Brass Square Bars | ||||
|---|---|---|---|---|
| Industry / Sector | Typical Components | Preferred Brass Grade | Key Properties Utilized | Remarks |
| Electrical & Electronics | Terminal blocks, connectors, switchgear parts | CuZn30, CuZn37 | High electrical conductivity, corrosion resistance | Square section allows precise machining and compact layouts |
| Plumbing & Sanitary | Valve bodies, taps, couplings, fittings | CuZn37, DZR Brass | Corrosion resistance, pressure stability | Often machined into threaded components |
| Automotive | Sensor housings, bushings, spacers | Free Cutting Brass (CuZn39Pb3) | Excellent machinability, dimensional accuracy | Suitable for high-volume CNC machining |
| Industrial Machinery | Gears, sliders, wear plates, guide blocks | CuZn37, High Tensile Brass | Wear resistance, good strength-to-weight ratio | Square bars reduce material wastage during machining |
| Hardware & Fasteners | Nuts, bolts, inserts, threaded blocks | Free Cutting Brass | High machinability, clean thread formation | Preferred for precision fastener manufacturing |
| Architecture & Interiors | Decorative elements, trims, spacers | CuZn30, CuZn37 | Aesthetic appeal, corrosion resistance | Can be polished, lacquered, or coated |
| Renewable Energy | Electrical grounding components, connectors | CuZn30 | Conductivity, durability | Used in solar and power distribution systems |
| Marine & Coastal Equipment | Brackets, fittings, structural inserts | Naval Brass / DZR Brass | Resistance to dezincification and seawater corrosion | Recommended for humid and saline environments |
Standard Brass Sqaure Bars Dimensional Chart
| Brass Square Bars – Dimensional Chart & Theoretical Weight (kg/m) | |||||
|---|---|---|---|---|---|
| Size (Across Flats) | Size (mm) | Cross-Section Area (mm²) | Theoretical Weight (kg/m) | Typical Length | Remarks |
| 1/4" | 6.35 | 40.32 | 0.36 | 2m / 3m / 4m / 5m | Theoretical weight calculated at brass density 8.40 g/cm³. Actual weight may vary with alloy & tolerance. |
| 5/16" | 7.94 | 63.04 | 0.53 | 2m / 3m / 4m / 5m | |
| 3/8" | 9.53 | 90.82 | 0.76 | 2m / 3m / 4m / 5m | |
| 1/2" | 12.70 | 161.29 | 1.36 | 2m / 3m / 4m / 5m | |
| 5/8" | 15.88 | 252.17 | 2.12 | 2m / 3m / 4m / 5m | |
| 3/4" | 19.05 | 362.90 | 3.05 | 2m / 3m / 4m / 5m | |
| 1" | 25.40 | 645.16 | 5.42 | 2m / 3m / 4m / 5m | |
| 1-1/4" | 31.75 | 1008.06 | 8.47 | 2m / 3m / 4m / 5m | |
| 1-1/2" | 38.10 | 1451.61 | 12.19 | 2m / 3m / 4m / 5m | |
| 2" | 50.80 | 2580.64 | 21.68 | 2m / 3m / 4m | |
| 2-1/2" | 63.50 | 4032.25 | 33.87 | 2m / 3m | |
| 3" | 76.20 | 5806.44 | 48.77 | 2m / 3m | |
NOTE: Weights are theoretical and for reference only. Actual weight depends on alloy family (CuZn30/CuZn37/Leaded/High Tensile), temper, corner radius, straightness and manufacturing tolerance.
For EPC / consultant submissions, specify: size tolerance, corner radius, straightness, temper, alloy/UNS grade and length tolerance.
