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High Tensile Brass Rods
Product Overview
High Tensile Brass Rods supplied by R V Metal Corporation are engineered for applications demanding superior mechanical strength, excellent machinability, and long-term dimensional stability under high stress. Manufactured from carefully controlled brass alloys with optimized copper–zinc ratios and strengthening elements, these rods deliver higher tensile strength, improved fatigue resistance, and better wear performance compared to standard brass grades. They are widely used in precision components where failure is not an option.
Our High Tensile Brass Rods are produced through controlled hot extrusion and cold drawing processes to achieve uniform grain structure, consistent mechanical properties, and tight dimensional tolerances. Available in multiple tempers such as half-hard and hard-drawn, these rods offer excellent performance in high-load mechanical parts, fasteners, shafts, bushings, and fittings. The material exhibits good corrosion resistance, reliable performance in marine and industrial environments, and stable behavior during machining and forming.
R V Metal Corporation supplies High Tensile Brass Rods in standard and custom diameters, lengths, and alloy grades as per ASTM, EN, IS, and customer-specific specifications. Each batch can be supported with mill test certificates (MTC), chemical composition reports, and mechanical property verification, making our products suitable for OEMs, EPC contractors, and export-focused engineering projects requiring consistent quality and traceability.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product | High Tensile Brass Rods |
| Material Type | High Strength Brass Alloy (Cu–Zn Based) |
| Typical Grades | CuZn39Pb3, CuZn40Pb2, CuZn36Pb2As, High-Tensile Special Alloys |
| Manufacturing Process | Hot Extrusion followed by Cold Drawing |
| Form | Round Rods (Standard & Custom Profiles on Request) |
| Diameter Range | 6 mm to 150 mm (Custom sizes available) |
| Standard Length | 3 m, 4 m, 6 m or Cut-to-Length |
| Temper / Condition | Half-Hard, Hard Drawn |
| Tensile Strength | ≥ 450 MPa (grade dependent) |
| Yield Strength | ≥ 250 MPa (approx., grade dependent) |
| Elongation | 10% – 25% (depending on temper) |
| Hardness | HB 120 – 180 (Brinell, grade dependent) |
| Density | ~8.4 – 8.6 g/cm³ |
| Surface Finish | Bright Drawn / Mill Finish |
| Machinability | Excellent (especially leaded grades) |
| Corrosion Resistance | Good to Excellent (marine & industrial environments) |
| Dimensional Tolerance | As per ASTM / EN / IS standards |
| Standards | ASTM B16 / B453, EN 12164, IS 319 |
| Testing & Certification | Chemical Analysis, Mechanical Testing, MTC (EN 10204 3.1) |
| Customization | Alloy chemistry, size, length & temper as per customer requirement |
Chemical Composition
| Element | CuZn39Pb3 (Typical High Tensile) |
CuZn40Pb2 | CuZn36Pb2As | Remarks / Function |
|---|---|---|---|---|
| Copper (Cu) | 57.0 – 59.0 % | 59.0 – 61.0 % | 60.0 – 62.0 % | Provides strength, corrosion resistance |
| Zinc (Zn) | Balance | Balance | Balance | Increases tensile strength and hardness |
| Lead (Pb) | 2.5 – 3.5 % | 1.5 – 2.5 % | 1.5 – 2.5 % | Improves machinability |
| Arsenic (As) | — | — | 0.02 – 0.15 % | Improves dezincification resistance |
| Iron (Fe) | ≤ 0.35 % | ≤ 0.30 % | ≤ 0.30 % | Enhances strength, grain refinement |
| Tin (Sn) | ≤ 0.20 % | ≤ 0.20 % | ≤ 0.20 % | Improves corrosion resistance |
| Nickel (Ni) | ≤ 0.30 % | ≤ 0.30 % | ≤ 0.30 % | Improves toughness and strength |
| Aluminium (Al) | ≤ 0.05 % | ≤ 0.05 % | ≤ 0.05 % | Deoxidation control |
| Others | ≤ 0.30 % | ≤ 0.30 % | ≤ 0.30 % | Total impurities |
UNS Codes & Grades
| UNS Code | Common Grade / Name | Typical Composition | Form Supplied | Key Characteristics | Typical Applications |
|---|---|---|---|---|---|
| C36000 | Free-Cutting Brass | Cu ~61%, Zn ~35%, Pb ~3% | Rod / Bar | Excellent machinability, good strength | Precision machined components, fittings, fasteners |
| C37700 | Forging Brass (High Tensile) | Cu ~58–60%, Zn balance, Pb ≤2% | Rod / Billet | High tensile strength, good hot workability | Forged parts, valves, hydraulic components |
| C38500 | Architectural Brass | Cu ~57–59%, Zn balance, Pb ~2% | Rod / Bar | Good strength with improved extrusion properties | Structural fittings, decorative hardware |
| C46400 | Naval Brass (High Strength) | Cu ~60%, Zn ~39%, Sn ~1% | Rod / Bar | High tensile strength, excellent corrosion resistance | Marine hardware, propeller shafts, fasteners |
| C86300 | Manganese Bronze (High Tensile) | Cu ~60–63%, Zn balance, Mn/Al additions | Rod / Bar | Very high strength, wear resistance | Heavy-duty mechanical parts, gears, bushings |
| C67820 | DZR High Tensile Brass | Cu ~60–62%, Zn balance, As added | Rod / Bar | Dezincification resistant, high mechanical strength | Plumbing, waterworks, aggressive environments |
Mechanical, Physical & Fabrication Properties
| Property Category | Property | Typical Value / Description | Remarks (High Tensile Brass Rods) |
|---|---|---|---|
| Mechanical Properties | Tensile Strength | 450 – 650 MPa | Significantly higher than standard brass rods |
| Yield Strength (0.2% Proof) | 250 – 450 MPa | Depends on alloy composition and temper | |
| Elongation | 8 – 25 % | Lower elongation compared to free-cutting brass | |
| Hardness | 120 – 200 HB | Increases with cold working and alloying elements | |
| Impact Resistance | Good | Suitable for dynamic and load-bearing components | |
| Physical Properties | Density | 8.3 – 8.7 g/cm³ | Varies with zinc and alloy additions |
| Melting Range | 880 – 950 °C | Higher zinc lowers melting temperature | |
| Electrical Conductivity | 15 – 30 % IACS | Lower than copper, higher than steels | |
| Thermal Conductivity | 100 – 130 W/m·K | Good heat dissipation capability | |
| Corrosion Resistance | Very Good | Excellent in marine and industrial atmospheres | |
| Fabrication Properties | Machinability | Good to Excellent | Lower than free-cutting brass but still efficient |
| Hot Workability | Excellent | Ideal for forging and hot extrusion | |
| Cold Workability | Moderate | May require intermediate annealing | |
| Weldability | Fair | Preheating and controlled procedures recommended | |
| Brazability / Solderability | Excellent | Commonly used in brazed assemblies | |
| Formability | Good | Suitable for complex forged and machined shapes |
Common Names & International Identifiers
| Common / Trade Name | UNS Designation | EN / DIN Grade | BS / IS Equivalent | Typical Composition Type | Industry / Regional Usage |
|---|---|---|---|---|---|
| High Tensile Brass | C67300 | CW710R | BS CZ114 / IS 319 Type III | Cu-Zn-Al-Fe | General engineering, marine, heavy-duty parts |
| Manganese Brass | C67500 | CW713R | BS CZ114 | Cu-Zn-Mn-Fe | Marine hardware, valves, pump components |
| Naval High Tensile Brass | C46400 | CW721R | BS CZ112 | Cu-Zn-Sn | Shipbuilding, propeller shafts, seawater fittings |
| Aluminium Brass (High Strength) | C67400 | CW702R | BS CZ110 | Cu-Zn-Al | Heat exchangers, condensers, marine systems |
| High Strength Forging Brass | C67820 | CW722R | IS 6912 | Cu-Zn-Al-Mn | Forged components, gears, mechanical parts |
| HT Brass Rod (Industrial Grade) | C67000 | CW704R | IS 319 Type II | Cu-Zn-Sn-Al | OEM machined parts, bushings, connectors |
| Marine Brass Rod | C46200 | CW711R | BS CZ111 | Cu-Zn-Sn | Saltwater service, corrosion-critical applications |
| Heavy Duty Brass Rod | — | — | Customer / OEM Spec | Custom Cu-Zn-Al-Mn | Custom engineered and EPC-specific applications |
Standards & International Equivalents
| Standard Body | Standard Number | Grade / Designation | Material Description | Equivalent / Comparable Standards | Primary Regions of Use |
|---|---|---|---|---|---|
| ASTM | ASTM B16 / B124 | C67300 | High Tensile Brass Rods & Bars | EN CW710R, BS CZ114, IS 319 Type III | USA, Middle East, EPC Projects |
| ASTM | ASTM B16 / B124 | C67500 | Manganese High Tensile Brass | EN CW713R, BS CZ114 | USA, Marine & Heavy Engineering |
| EN | EN 12164 / EN 12165 | CW710R | High Tensile Brass (Aluminium Type) | ASTM C67300, IS 319 Type III | Europe, Africa |
| EN | EN 12164 / EN 12165 | CW713R | Manganese Brass – High Strength | ASTM C67500, BS CZ114 | Europe, Marine Applications |
| BS | BS 2874 / BS EN 12164 | CZ114 | High Tensile Brass Rod | ASTM C67300 / C67500, EN CW710R | UK, Commonwealth Countries |
| IS | IS 319 | Type III | High Tensile Brass (Free Cutting) | ASTM C67300, EN CW710R | India |
| DIN | DIN EN 12164 | CuZn38Al2 | High Strength Aluminium Brass | ASTM C67300, BS CZ114 | Germany, EU |
| JIS | JIS H3250 | C6782 | High Strength Brass Rod | ASTM C67300, EN CW710R | Japan, Asia-Pacific |
| ISO | ISO 426-1 | CuZnAl | High Tensile Brass Alloy | ASTM / EN / BS Equivalent Grades | Global EPC & OEM Specifications |
| OEM / EPC | Project Specific | Custom HT Brass | Custom Composition & Properties | Mapped to ASTM / EN / IS | Power, Marine, Infrastructure Projects |
Applications
| Industry / Sector | Specific Applications | Why High Tensile Brass Rods Are Used | Typical Grades | End Users / Systems |
|---|---|---|---|---|
| Marine & Shipbuilding | Propeller shafts, valve stems, seawater fittings, pump components | Excellent corrosion resistance in seawater, high strength, good wear resistance | C67300, C67500, CW710R | Ships, offshore platforms, naval vessels |
| Electrical & Power | Switchgear parts, connector pins, earthing components, terminal blocks | High electrical conductivity combined with superior mechanical strength | C67300, IS 319 Type III | Substations, panels, transformers |
| Plumbing & Valve Manufacturing | Valve spindles, faucet components, pressure fittings | High pressure resistance, dezincification resistance, machinability | C67500, CW713R | Industrial & commercial plumbing systems |
| Automotive | Bushings, gears, synchronizer rings, fasteners | Excellent fatigue strength, wear resistance, dimensional stability | C67300, CuZn38Al2 | OEM automotive assemblies |
| Heavy Engineering | Hydraulic parts, load-bearing pins, couplings | High tensile strength, shock resistance, long service life | C67500, CW710R | Machinery, presses, industrial equipment |
| Oil & Gas | Valve internals, corrosion-resistant fasteners | Resistance to aggressive fluids, mechanical reliability | C67500, CZ114 | Refineries, offshore rigs, pipelines |
| Agricultural Equipment | Bushes, wear plates, threaded rods | High wear resistance under dusty and abrasive conditions | IS 319 Type III | Tractors, harvesters, implements |
| Defense & Aerospace | Precision mechanical components, structural fasteners | High strength-to-weight ratio, reliability under stress | C67300, CW710R | Defense OEMs, aerospace assemblies |
| OEM Machining & Turned Parts | Custom CNC turned components | Excellent machinability with high mechanical performance | C67300, C67500 | Global OEM suppliers |
| Infrastructure & EPC Projects | Structural inserts, anchoring components | Long-term durability, compliance with international standards | ASTM / EN / IS Grades | Power plants, ports, large infrastructure projects |
Standard High Tensile Brass Rods Dimensional Chart
| Nominal Diameter | Diameter (mm) | Diameter (inch) | Cross-Sectional Area (mm²) | Theoretical Weight (kg/m) | Theoretical Weight (kg/ft) | Standard Lengths | Typical Tolerance |
|---|---|---|---|---|---|---|---|
| Ø6 | 6 | 0.236 | 28.27 | 0.24 | 0.073 | 3 m / 4 m / Cut Length | ±0.05 mm |
| Ø8 | 8 | 0.315 | 50.27 | 0.43 | 0.131 | 3 m / 4 m / Cut Length | ±0.05 mm |
| Ø10 | 10 | 0.394 | 78.54 | 0.67 | 0.204 | 3 m / 4 m / Cut Length | ±0.08 mm |
| Ø12 | 12 | 0.472 | 113.10 | 0.97 | 0.296 | 3 m / 4 m / Cut Length | ±0.08 mm |
| Ø16 | 16 | 0.630 | 201.06 | 1.73 | 0.527 | 3 m / 4 m | ±0.10 mm |
| Ø20 | 20 | 0.787 | 314.16 | 2.70 | 0.823 | 3 m / 4 m | ±0.10 mm |
| Ø25 | 25 | 0.984 | 490.87 | 4.22 | 1.286 | 3 m / 4 m | ±0.15 mm |
| Ø30 | 30 | 1.181 | 706.86 | 6.07 | 1.849 | 3 m / 4 m | ±0.15 mm |
| Ø40 | 40 | 1.575 | 1256.64 | 10.80 | 3.292 | 3 m | ±0.20 mm |
| Ø50 | 50 | 1.969 | 1963.50 | 16.88 | 5.142 | 3 m | ±0.25 mm |
| Finished Part OD (mm) | Recommended Stock Rod OD (mm) | Typical Machining Allowance (mm on Ø) | Allowance per Side (mm) | Use Case / Notes |
|---|---|---|---|---|
| ≤ 10 | +0.8 to +1.5 mm | 0.8 – 1.5 | 0.4 – 0.75 | Small CNC parts, minimal runout. Prefer cold-drawn rod. |
| 10 – 20 | +1.0 to +2.0 mm | 1.0 – 2.0 | 0.5 – 1.0 | General turning, drilling, threading. Safe allowance for surface cleanup. |
| 20 – 35 | +1.5 to +2.5 mm | 1.5 – 2.5 | 0.75 – 1.25 | Common for valve parts, bushes, fittings. Covers ovality & scale. |
| 35 – 50 | +2.0 to +3.0 mm | 2.0 – 3.0 | 1.0 – 1.5 | Larger turned components. Allowance accounts for straightness & skin. |
| 50 – 75 | +2.5 to +4.0 mm | 2.5 – 4.0 | 1.25 – 2.0 | Heavy machining / boring operations. Prefer stress-relieved stock. |
| 75 – 100 | +3.0 to +5.0 mm | 3.0 – 5.0 | 1.5 – 2.5 | Large diameter rods. Higher allowance for bow, taper, extrusion skin. |
| > 100 | +4.0 to +8.0 mm | 4.0 – 8.0 | 2.0 – 4.0 | Project/OEM-specific. Confirm tolerance class, straightness & UT requirements. |
Machining Allowance Notes (EPC / Consultant Grade):
• Allowance depends on rod condition: Cold-drawn needs less, extruded/hot-rolled needs more due to skin/scale.
• For tight concentricity parts (valve spools, precision bushings), specify straightness and diameter tolerance with order.
• If parts require plating/polishing, add extra allowance for finishing stock removal.
• For long slender parts, choose a slightly larger OD to prevent chatter and taper during turning.
• Allowance depends on rod condition: Cold-drawn needs less, extruded/hot-rolled needs more due to skin/scale.
• For tight concentricity parts (valve spools, precision bushings), specify straightness and diameter tolerance with order.
• If parts require plating/polishing, add extra allowance for finishing stock removal.
• For long slender parts, choose a slightly larger OD to prevent chatter and taper during turning.
