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Brass Flat Bars
Product Overview
Brass Flat Bars supplied by R V Metal Corporation are precision-manufactured semi-finished products made from high-quality brass alloys, designed to meet the demanding requirements of electrical, mechanical, architectural, and industrial applications. These flat bars offer an excellent balance of strength, corrosion resistance, electrical conductivity, and machinability, making them a preferred choice for both structural and functional components.
Manufactured through controlled hot extrusion and cold drawing processes, our brass flat bars are available in a wide range of widths, thicknesses, and tempers to suit fabrication, machining, bending, and forming operations. The material exhibits superior surface finish, tight dimensional tolerances, and consistent metallurgical properties, ensuring reliable performance in mass production as well as custom-engineered applications.
R V Metal Corporation supplies brass flat bars in multiple grades such as free-cutting brass, high-tensile brass, leaded brass, and lead-free brass, compliant with ASTM, EN, IS, and UNS standards. These flat bars are extensively used in electrical panels, earthing systems, switchgear components, decorative hardware, automotive parts, plumbing fittings, and precision-machined components where durability and accuracy are critical.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Form | Brass Flat Bars / Rectangular Sections |
| Manufacturing Process | Hot Extruded → Cold Drawn / Rolled → Straightened |
| Material Grades | CuZn30, CuZn33, CuZn37, Leaded Brass, DZR Brass (as specified) |
| UNS / EN Designations | C26000, C26800, C27200, C36000 / CW505L, CW508L, CW509L, CW614N |
| Width Range | 6 mm to 150 mm (custom sizes available) |
| Thickness Range | 3 mm to 50 mm (custom thickness on request) |
| Standard Length | 3 m, 4 m, 6 m |
| Cut Lengths | As per customer drawing or tolerance requirement |
| Temper / Condition | Annealed (O), Half-Hard (H02), Hard (H04 / H08) |
| Dimensional Tolerance | As per ASTM B36 / EN 12167 / IS standards |
| Straightness | ≤ 1/1000 of length (typical) |
| Corner Radius | Controlled radius as per standard or customer specification |
| Surface Finish | Mill Finish, Bright Drawn, Pickled, Polished |
| Density | ≈ 8.40 – 8.60 g/cm³ (grade dependent) |
| Machinability | Excellent (especially leaded grades) |
| Electrical Conductivity | 20–28 % IACS (depending on alloy) |
| Corrosion Resistance | Good resistance to atmospheric and mild chemical environments |
| Applicable Standards | ASTM B36, ASTM B16, EN 12167, IS 319 |
| Quality Documentation | Mill Test Certificate (EN 10204 3.1), Chemical & Mechanical Reports |
| Applications | Electrical busbars, earthing strips, hardware, fittings, precision machined components |
Chemical Composition
| Element | CuZn30 (Cartridge Brass) |
CuZn33 | CuZn37 (Common Brass) |
Leaded Brass (Free Cutting) |
DZR Brass (Dezincification Resistant) |
|---|---|---|---|---|---|
| Copper (Cu) | 69.0 – 71.0 % | 66.0 – 68.0 % | 62.0 – 64.0 % | 57.0 – 61.0 % | 60.0 – 63.0 % |
| Zinc (Zn) | Balance | Balance | Balance | Balance | Balance |
| Lead (Pb) | ≤ 0.05 % | ≤ 0.05 % | ≤ 0.05 % | 1.5 – 3.5 % | ≤ 0.10 % |
| Iron (Fe) | ≤ 0.05 % | ≤ 0.05 % | ≤ 0.05 % | ≤ 0.35 % | ≤ 0.20 % |
| Tin (Sn) | — | — | — | — | 0.5 – 1.3 % |
| Arsenic (As) | — | — | — | — | 0.02 – 0.15 % |
| Nickel (Ni) | ≤ 0.30 % | ≤ 0.30 % | ≤ 0.30 % | ≤ 0.30 % | ≤ 0.50 % |
| Aluminium (Al) | ≤ 0.05 % | ≤ 0.05 % | ≤ 0.05 % | ≤ 0.05 % | ≤ 0.05 % |
| Other Impurities | ≤ 0.20 % total | ≤ 0.20 % total | ≤ 0.20 % total | ≤ 0.50 % total | ≤ 0.20 % total |
UNS Codes & Grades
| UNS Code | EN / DIN Designation | IS / BS Equivalent | Common Name | Key Characteristics | Typical Applications |
|---|---|---|---|---|---|
| C26000 | CW505L (CuZn30) | IS 319 Type 1 | Cartridge Brass | Excellent cold workability, deep drawing quality | Electrical parts, architectural flats, decorative components |
| C26800 | CW508L (CuZn33) | IS 319 Type 2 | Yellow Brass | Balanced strength and ductility, good corrosion resistance | General engineering, hardware, flat sections |
| C27000 | CW509L (CuZn37) | IS 319 Type 3 | Common Brass | Good formability, economical grade | Plates, flats, strips, decorative fittings |
| C36000 | CW614N (CuZn39Pb3) | IS 319 Type 1 (Leaded) | Free Cutting Brass | Excellent machinability due to lead content | Machined brass flats, precision components |
| C38500 | CW617N (CuZn40Pb2) | IS 319 Type 2 (Leaded) | Forging Brass | High hot-forming strength, good machinability | Forged flats, valves, fittings |
| C69300 | CW724R (CuZn21Si3P) | IS 6912 (Lead-Free) | Lead-Free Brass | Environment-friendly, dezincification resistant | Potable water fittings, eco-compliant applications |
| C68700 | CW602N (CuZn36Pb2As) | EN 12164 / EN 12165 | DZR Brass | High resistance to dezincification | Plumbing flats, marine & water-handling systems |
Mechanical, Physical & Fabrication Properties
| Property Category | Property | Typical Values / Characteristics | Remarks for Brass Flat Bars |
|---|---|---|---|
| Mechanical Properties | Tensile Strength | 300 – 550 MPa | Varies with grade (CuZn30, CuZn37, Free-Cutting, Forging grades) and temper |
| Yield Strength | 120 – 350 MPa | Higher in half-hard and hard tempers | |
| Elongation | 10 – 45% | Excellent ductility in annealed (O) condition | |
| Hardness | 60 – 160 HB | Controlled through cold working and annealing | |
| Impact Resistance | Good | Maintains toughness at ambient temperatures | |
| Physical Properties | Density | 8.4 – 8.7 g/cm³ | Depends on zinc and alloying additions |
| Melting Range | 900 – 940°C | Lower than pure copper, aiding hot working | |
| Electrical Conductivity | 20 – 30 % IACS | Lower than copper, sufficient for grounding and connectors | |
| Thermal Conductivity | 110 – 130 W/m·K | Good heat dissipation capability | |
| Corrosion Resistance | Good to Excellent | Improved in DZR and lead-free grades | |
| Magnetic Permeability | Non-magnetic | Suitable for electrical and precision applications | |
| Fabrication Properties | Machinability | Excellent (up to 100% for free-cutting grades) | Ideal for CNC-machined flat components |
| Cold Formability | Excellent | Best in CuZn30 / CuZn37 annealed condition | |
| Hot Workability | Very Good | Preferred forging temperature: 650 – 750°C | |
| Weldability | Fair to Good | Brazing and soldering preferred over fusion welding | |
| Brazability / Solderability | Excellent | Clean joints with standard copper-based fillers | |
| Surface Finishing | Excellent | Suitable for polishing, plating, lacquering and coating |
Common Names & International Identifiers
| Common Name | UNS Designation | EN / DIN Designation | IS / BIS Designation | ASTM / ASME | Typical Applications |
|---|---|---|---|---|---|
| Cartridge Brass Flat Bar | C26000 | CW505L (CuZn30) | IS 319 Grade 1 | ASTM B36 / B36M | Electrical components, deep-drawn parts, architectural flats |
| Common Brass Flat Bar | C27200 | CW508L (CuZn37) | IS 319 Grade 2 | ASTM B36 / B36M | General engineering, decorative fittings, furniture frames |
| Free Cutting Brass Flat Bar | C36000 | CW614N (CuZn39Pb3) | IS 319 Grade 3 | ASTM B16 / B16M | CNC machined components, valves, precision parts |
| High Tensile Brass Flat Bar | C37700 | CW617N (CuZn40Pb2) | IS 319 Grade HT | ASTM B16 / B16M | High-strength fittings, fasteners, forged components |
| DZR Brass Flat Bar | C35200 / C35300 | CW602N (CuZn36Pb2As) | IS 319 DZR | ASTM B16 (DZR) | Plumbing parts, potable water systems, corrosion-prone zones |
| Naval Brass Flat Bar | C46400 | CW712R (CuZn39Sn1) | IS 291 | ASTM B21 / B21M | Marine hardware, shipbuilding, coastal installations |
| Lead-Free Brass Flat Bar | C69300 | CW724R | IS 319 LF | ASTM B371 | Eco-compliant plumbing, drinking water components |
| Forging Brass Flat Bar | C37710 | CW617N | IS 319 Forging | ASTM B16 | Hot forged parts, automotive and industrial fittings |
Standards & International Equivalents
| Standard System | Standard / Specification | Grade / Designation | Equivalent Material | Country / Region | Remarks |
|---|---|---|---|---|---|
| ASTM / ASME | ASTM B16 / B16M | C36000, C37700 | Free Cutting & High Tensile Brass | USA | Widely used for machined and forged brass flat bars |
| ASTM | ASTM B36 / B36M | C26000, C27000, C27200 | Cartridge & Common Brass | USA | Standard for rolled brass flats, sheets & strips |
| ASTM | ASTM B371 | C69300 | Lead-Free Brass | USA | Low-lead eco-compliant brass for potable water use |
| EN / DIN | EN 12164 / EN 12165 | CW614N, CW617N | CuZn39Pb3 / CuZn40Pb2 | Europe | Common European standards for brass bars and flats |
| EN | EN 1652 | CW505L, CW508L | CuZn30 / CuZn37 | Europe | Rolled brass flat products for forming applications |
| EN | EN 12164 (DZR) | CW602N | CuZn36Pb2As (DZR) | Europe | Dezincification resistant brass for water systems |
| DIN | DIN 17660 | CuZn39Pb3, CuZn40Pb2 | Free Cutting / Forging Brass | Germany | Legacy DIN specification, still referenced globally |
| IS / BIS | IS 319 (Part 1) | Grade 1, Grade 2, Grade 3 | CuZn30 / CuZn37 / CuZn39Pb3 | India | Primary Indian standard for brass flats and bars |
| IS / BIS | IS 291 | Naval Brass | CuZn39Sn1 | India | Marine and corrosion-resistant brass applications |
| JIS | JIS H3250 | C3604, C3771 | Free Cutting & Forging Brass | Japan | Japanese equivalents commonly used by OEMs |
| ISO | ISO 426-1 / ISO 426-2 | CuZn Alloys | Brass Flats & Bars | International | Dimensional and material harmonization standard |
Applications
| Industry / Sector | Application | Why Brass Flat Bars Are Used | Typical Grades | Remarks |
|---|---|---|---|---|
| Electrical | Busbar supports, earthing strips, terminals | Good electrical conductivity, corrosion resistance, easy fabrication | C26000, C27200, C36000 | Preferred where copper is cost-prohibitive |
| Plumbing & Sanitary | Valve plates, fittings bases, connectors | Excellent machinability and corrosion resistance in water | C37700, CW617N | Suitable for potable water with lead-controlled grades |
| HVAC & Refrigeration | Mounting flats, brackets, heat-transfer components | Thermal conductivity and vibration resistance | C26000, C27000 | Used in both indoor and outdoor assemblies |
| Automotive | Electrical connectors, clips, sensor mounts | High strength-to-weight ratio and corrosion resistance | C36000, C38500 | Compatible with CNC and high-volume machining |
| Industrial Machinery | Wear plates, guide strips, shims | Low friction, good wear resistance | C28000, C36000 | Reduces galling against steel parts |
| Marine & Shipbuilding | Corrosion-resistant flats, fastener bases | Resistance to seawater corrosion | Naval Brass, C46400 | Used above and below deck components |
| Architecture & Interiors | Decorative trims, railings, cladding supports | Aesthetic appeal, easy polishing and coating | C26000, C26800 | Available in brushed, mirror and antique finishes |
| Furniture & Lighting | Structural flats, frames, designer fixtures | Formability and premium visual finish | C26000, C27200 | Common in luxury furniture and lighting designs |
| Agricultural Equipment | Wear-resistant plates, connectors | Corrosion resistance in moist environments | C28000, C36000 | Long service life with minimal maintenance |
| OEM & Precision Engineering | Custom machined flat components | Tight tolerances, consistent material properties | As per drawing / specification | Custom sizes and tempers available |
Standard Brass Flat Bars Dimensional Chart
Note: Theoretical weights below are calculated using an average brass density of 8.47 g/cc. Actual weight can vary by alloy grade (Cu/Zn/other additions) and rolling tolerances. For billing/dispatch, always use actual weighment.
| Brass Flat Bars – Standard Sizes & Theoretical Weight (kg/m) | |||||
|---|---|---|---|---|---|
| Form | Width (mm) | Thickness (mm) | Cross-Section (mm²) | Theoretical Weight (kg/m) | Typical Supply Length |
| Flat Bar | 10 | 1 | 10 | 0.085 | 3m / 4m / 5m / 6m (custom cut) |
| Flat Bar | 12 | 2 | 24 | 0.203 | 3m / 4m / 5m / 6m (custom cut) |
| Flat Bar | 15 | 3 | 45 | 0.381 | 3m / 4m / 5m / 6m (custom cut) |
| Flat Bar | 20 | 3 | 60 | 0.508 | 3m / 4m / 5m / 6m (custom cut) |
| Flat Bar | 25 | 3 | 75 | 0.635 | 3m / 4m / 5m / 6m (custom cut) |
| Flat Bar | 25 | 5 | 125 | 1.059 | 3m / 4m / 5m / 6m (custom cut) |
| Flat Bar | 30 | 3 | 90 | 0.762 | 3m / 4m / 5m / 6m (custom cut) |
| Flat Bar | 30 | 5 | 150 | 1.270 | 3m / 4m / 5m / 6m (custom cut) |
| Flat Bar | 40 | 5 | 200 | 1.694 | 3m / 4m / 5m / 6m (custom cut) |
| Flat Bar | 50 | 5 | 250 | 2.118 | 3m / 4m / 5m / 6m (custom cut) |
| Flat Bar | 50 | 10 | 500 | 4.235 | 3m / 4m / 5m / 6m (custom cut) |
| Flat Bar | 60 | 6 | 360 | 3.049 | 3m / 4m / 5m / 6m (custom cut) |
| Flat Bar | 75 | 6 | 450 | 3.812 | 3m / 4m / 5m / 6m (custom cut) |
| Flat Bar | 80 | 10 | 800 | 6.776 | 3m / 4m / 5m / 6m (custom cut) |
| Flat Bar | 100 | 10 | 1000 | 8.470 | 3m / 4m / 5m / 6m (custom cut) |
| Weight Calculation (For Any Custom Size) | |
|---|---|
| Formula (kg/m) | kg/m = (Width mm × Thickness mm) × 0.00847 |
| Where | 0.00847 = 8.47 g/cc converted for mm² to kg/m (using 8,470 kg/m³). |
| Weight per Length | kg per bar = (kg/m) × Length (m) |
| Common Supply Options (R V Metal Corporation) | ||
|---|---|---|
| Parameter | Standard | Custom / Notes |
| Temper / Condition | Soft (O) / Half-Hard (H02) / Hard (H04) | Other tempers available on request (by standard/grade). |
| Finish | Mill Finish | Polished / Brushed / Protective film (where applicable). |
| Edge & Corner | Standard rolled edges | Deburred / chamfered / radius as per drawing (important for electrical & decorative use). |
| Length | 3m / 4m / 5m / 6m | Cut-to-length with tolerance as agreed. |
