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Technical Specifications
Product Overview
360 Brass Round Bar is a free-machining brass alloy containing lead for enhanced machinability. This copper-zinc alloy offers excellent mechanical properties combined with superior machining characteristics, making it the preferred choice for high-volume production of precision components.
Key Features:
- Excellent machinability with 100% rating (industry standard)
- Good corrosion resistance in atmospheric conditions
- High strength and ductility combination
- Excellent hot and cold working properties
- Good electrical and thermal conductivity
- Lead content improves chip formation and tool life
Manufacturing Process: Produced through continuous casting and hot extrusion processes, followed by cold drawing to achieve precise dimensional tolerances and improved surface finish.
Applications: Precision machined components, automotive parts, plumbing fittings, electrical connectors, valve stems, instrument parts, clock and watch components, decorative hardware, and general engineering applications requiring excellent machinability.
🧪 Chemical Composition
| Element | Min % | Max % | Typical % | ASTM B16 Requirement |
|---|---|---|---|---|
| Copper (Cu) | 60.0 | 63.0 | 61.5 | 60.0-63.0 |
| Zinc (Zn) | 35.0 | 38.0 | 36.5 | 35.0-38.0 |
| Lead (Pb) | 2.5 | 3.7 | 3.1 | 2.5-3.7 |
| Iron (Fe) | - | 0.35 | 0.15 | ≤ 0.35 |
| Aluminum (Al) | - | 0.05 | 0.02 | ≤ 0.05 |
| Tin (Sn) | - | 0.05 | 0.02 | ≤ 0.05 |
| Nickel (Ni) | - | 0.30 | 0.10 | ≤ 0.30 |
| Other Elements | - | 0.50 | 0.20 | ≤ 0.50 |
⚙️ Mechanical Properties
| Property | ASTM Requirement | Typical Value | Test Method | Temperature |
|---|---|---|---|---|
| Tensile Strength | 415 MPa min | 450 MPa | ASTM E8 | Room Temp |
| Yield Strength (0.2%) | 240 MPa min | 275 MPa | ASTM E8 | Room Temp |
| Elongation | 15% min | 25% | ASTM E8 | Room Temp |
| Hardness (Brinell) | 120-160 HB | 140 HB | ASTM E10 | Room Temp |
| Hardness (Rockwell B) | 75-85 HRB | 80 HRB | ASTM E18 | Room Temp |
| Modulus of Elasticity | - | 110 GPa | ASTM E111 | Room Temp |
| Shear Strength | - | 310 MPa | ASTM B565 | Room Temp |
🔬 Physical Properties
| Property | Value | Unit | Temperature | Test Standard |
|---|---|---|---|---|
| Density | 8.50 | g/cm3 | 20¡ãC | ASTM B311 |
| Melting Point | 885-890 | ¡ãC | - | DSC Analysis |
| Thermal Conductivity | 115 | W/m·K | 20¡ãC | ASTM E1461 |
| Specific Heat | 380 | J/kg·K | 0-100¡ãC | ASTM C351 |
| Linear Expansion | 20.3 | μm/m·K | 20-100¡ãC | ASTM E228 |
| Electrical Resistivity | 62 | nΩ·m | 20¡ãC | ASTM B193 |
| Magnetic Permeability | 1.00 | μ/μ₀ | Room Temp | Non-magnetic |
| Machinability Rating | 100 | % | - | Industry Standard |
📏 Product Specifications
| Specification | Available Range | Standard Length | Custom Available | Tolerance |
|---|---|---|---|---|
| Diameter | 3mm - 300mm | Various | Yes | ±0.05mm |
| Length | 0.5m - 6m | 3m | Yes | +25mm/-0mm |
| Surface Finish | Mill, Polished, Bright | Mill | Yes | Ra ≤ 1.6μm |
| Straightness | ±2mm/m | Standard | Precision | ASTM B16 |
| End Condition | Sawn, Machined | Sawn | Yes | Square ±1¡ã |
| Temper Condition | H02, H04, H06 | H02 | Yes | ASTM B16 |
| Standards Compliance | ASTM B16, B124 | B16 | Multiple | Full compliance |
| Test Certificate | Mill TC, EN 10204 3.1 | Mill TC | Yes | Standard |
| Packaging | Bundles, Boxes, Crates | Bundles | Custom | Export standard |
| Surface Protection | Oil coating, Plastic wrap | Oil coating | Yes | Corrosion resistant |
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Our Advantages in Processing แท่งกลมทองเหลือง 360
Superior Machining Performance
360 brass offers exceptional machinability with optimal chip formation and clean breaks during cutting operations, allowing for high-speed machining with reduced tool wear and superior surface finish quality.
Precise Round Bar Formation
Manufactured through precision extrusion and drawing processes, ensuring consistent diameter tolerance, straightness, and roundness throughout the entire length of the bar for reliable performance.
Uniform Material Structure
Advanced metallurgical control during the casting and forming process creates a homogeneous grain structure, resulting in consistent mechanical properties and improved workability across the entire bar.
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