CNC Machining Brass
Material Description
Brass is a versatile and widely-used alloy that boasts a rich technical profile. It primarily consists of copper (Cu) as its base metal, with varying proportions of zinc (Zn) added to create alloys with distinct properties. The composition of brass can vary, with copper content typically ranging from 60% to 90% and zinc comprising the remainder. This alloy is well-regarded for its exceptional machinability, corrosion resistance, and electrical conductivity. Brass is also prized for its appealing golden color, which makes it a popular choice in decorative applications. Moreover, brass alloys can be tailored to suit specific requirements by adjusting the proportions of copper and zinc, leading to an array of brass grades with unique mechanical, thermal, and electrical characteristics.
The technical attributes of brass extend further to its remarkable workability and thermal conductivity, making it a favored material in industries like plumbing, architecture, and electronics. Brass exhibits excellent formability, allowing it to be shaped into intricate designs and components through processes like forging, casting, and machining. Its excellent thermal conductivity makes it suitable for applications requiring efficient heat transfer, such as heat exchangers and radiator cores. Additionally, brass alloys are known for their antimicrobial properties, rendering them suitable for applications in healthcare settings. These diverse technical characteristics have established brass as a fundamental material in various industries, bridging the gap between aesthetic appeal and robust functionality.
Grades
C260, C360
Finishing Options
Polishing, Oxidation Finish, Electroplating, Powder Coating, Lacquering, Painting
| Density | Tensile Yield Strength (MPa) | Fatigue Strength (MPa) | Hardness (Brinell) | Thermal Conductivity (W/m-K) | Coeff. of Thermal Expansion (mm/mdeg) | Electrical Resistivity (micro Ohm-cm) |
|---|---|---|---|---|---|---|
| 8400 | 200-550 | 150-300 | 80 - 220 | ~109-130 | 19 | 6-7 |
Design Recommendation
When designing with brass, it’s crucial to consider its distinctive properties and aesthetics. Brass is known for its warm, golden hue, excellent corrosion resistance, and malleability, making it a versatile choice for a wide range of applications. To maximize its visual appeal and durability, it’s advisable to choose appropriate finishing techniques, such as polishing or patination, to maintain or enhance its appearance over time. Additionally, pay attention to the alloy composition, as different brass alloys can offer varying levels of strength, corrosion resistance, and machinability, so select the alloy that best suits the intended use. Finally, brass is an environmentally friendly material, so incorporating it into sustainable design practices aligns well with green initiatives.
Cost Saving Tip
Brass shares similarities with copper in terms of machining characteristics. Select carbide tools with proper geometry and cooling systems to prevent work hardening. This not only reduces tool wear but also minimizes expenses associated with frequent tool changes.
