Brass CNC Machining Services
We machine C360/C260/C377/C464 brass via CNC turning & 5-axis milling to ±0.01mm tolerance. Brass parts excel in corrosion resistance and conductivity for auto, electronic and plumbing applications.
- Competitive Prices & DFM
- Tolerances up to ±0.01 mm
- 3-axis, 4-axis, and 5-axis CNC machining
- Parts delivered in as fast as 3 days
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Brass in CNC Machining
Brass, a copper-zinc alloy, is widely used in Brass CNC Machining due to its excellent machinability, corrosion resistance, and attractive surface finish. Compared with many engineering metals, brass allows higher cutting speeds, reduced tool wear, and efficient CNC turning and milling operations. Grades such as C360 free-machining brass are commonly selected for precision components because of their outstanding machining performance and dimensional consistency.
Custom brass CNC parts are widely used in plumbing systems, valves, fittings, electrical components, marine hardware, and automotive applications where corrosion resistance and reliable machinability are required. ZH Precision machines brass components according to customer drawings and CAD models, supporting both prototype and production quantities for OEM and industrial projects.
Brass CNC Machining Capabilities
| Feature | Detail |
|---|---|
| Available Brass Grades | C26000, C27200, C36000 |
| Cost Level | $$$ |
| Standard Lead Time | 3–7 Working Days |
| General Tolerances | ±0.025 mm |
| Precision Tolerances | Up to ±0.01 mm |
| Minimum Wall Thickness | 0.5 mm |
| Surface Finish | As-machined: Ra 3.2 μm (125 μin) or better |
| Maximum Part Size | 4000 mm × 1500 mm × 600 mm |
C36000 brass, also known as free-machining brass, offers the best machinability among brass alloys. It is widely used for high-efficiency CNC turning and milling of fittings, valves, connectors, plumbing components, and precision industrial parts requiring consistent production performance.
| Tensile Strength (MPa) | Fatigue Strength (MPa) | Elongation at Break (%) | Hardness (Brinell) | Density (g/cm³) |
|---|---|---|---|---|
| 310–380 | 110–140 | 25–45 | 80–110 | 8.50 |
C27400 brass is commonly used for CNC-turned and milled components such as fittings, valves, and connectors due to its stable machinability and consistent machining performance.
| Tensile Strength (MPa) | Fatigue Strength (MPa) | Elongation (%) | Hardness (Brinell) | Density (g/cm³) |
|---|---|---|---|---|
| 300–380 | 110–140 | 35–45 | 80–100 | 8.47 |
C28000 brass, also known as cartridge brass, is a copper-zinc alloy with good formability, stable machining performance, and reliable corrosion resistance. It is commonly used for CNC machined electrical connectors, plumbing fittings, decorative components, and general industrial parts.
| Tensile Strength (MPa) | Fatigue Strength (MPa) | Elongation at Break (%) | Hardness (Brinell) | Density (g/cm³) |
|---|---|---|---|---|
| 300–360 | 100–130 | 35–50 | 70–90 | 8.53 |
C26000 brass, also known as cartridge brass (70/30 brass), offers excellent cold formability and high ductility. It is widely used for stamping, forming, electrical terminals, decorative parts, and thin-wall components requiring stable deformation performance.
| Tensile Strength (MPa) | Fatigue Strength (MPa) | Elongation at Break (%) | Hardness (Brinell) | Density (g/cm³) |
|---|---|---|---|---|
| 300–350 | 90–120 | 40–60 | 60–90 | 8.53 |
C24000 brass is a high-copper low brass alloy with excellent corrosion resistance and strong cold forming capability. It is commonly used in CNC machining for decorative hardware, electrical connectors, plumbing fittings, and low-load precision components requiring stable surface finish and consistent production quality.
| Tensile Strength (MPa) | Fatigue Strength (MPa) | Elongation at Break (%) | Hardness (Brinell) | Density (g/cm³) |
|---|---|---|---|---|
| 280–340 | 85–115 | 45–65 | 65–85 | 8.45 |
Steel CNC Machining Quote Request
Send us your drawings or CAD files for steel CNC machined parts. We will review your requirements and provide a quotation based on material, tolerance, and quantity.
Surface Finishing Options for Steel
ZH Precision provides professional surface finishing for brass parts: sandblasting, electroplating, electrophoresis, painting, conversion coating, passivation, polishing and blackening. We monitor coating thickness, hardness, color, salt spray and adhesion, and provide corresponding test reports. Contact us to learn more details.
As Machined
Retain original CNC cutting texture to control overall costs, ideal for hidden structural brass parts without strict cosmetic requirements.
Black Oxide
Chemical blackening improves abrasion and mild rust resistance, ideal for precision industrial brass gears, valve cores and mechanical moving fittings.
Polishing
High-gloss buffing eliminates surface tool marks to achieve bright luster, perfect for exposed decorative brass fittings and visible assembly parts.
Sand Blasting
Fine blasting creates uniform matte texture to boost coating adhesion for brass parts requiring later plating treatments.
What is Brass CNC Machining?
Brass CNC machining is a subtractive manufacturing process that uses computer-controlled milling and turning machines to cut brass material into precise components according to digital designs (CAD models). The process is widely used to produce high-accuracy parts with excellent surface finish and stable dimensional consistency.
Brass is one of the most machinable metals, especially grades like C36000, which allow high-speed cutting with low tool wear and efficient chip removal. This makes it suitable for both prototype development and large-scale production.
Common CNC-machined brass parts include fittings, valves, electrical connectors, plumbing components, and precision mechanical hardware used across automotive, electrical, marine, and industrial applications.
Advantages of CNC Machined Brass
1. Exceptional Machinability: Excellent machinability enables high-speed CNC processing with low tool wear, making brass ideal for complex geometries and tight-tolerance components.
2.High Electrical & Thermal Conductivity: Superior electrical and thermal conductivity makes brass suitable for connectors, terminals, contacts, and other conductive applications.
3.Strong Corrosion Resistance: Natural resistance to corrosion and moisture helps brass parts maintain reliable performance in plumbing and industrial environments.
4.Low Friction & Wear Resistance: Inherent low-friction properties reduce wear, making brass suitable for bushings, valves, gears, and moving assemblies.
5.Excellent Surface Finish: Brass produces smooth machined surfaces with minimal post-processing, delivering both functional and aesthetic benefits.
6.Reliable Strength & Dimensional Stability: Good strength and dimensional stability ensure consistent performance in precision-machined components.
Applications of CNC Machined Brass Parts
1.Electronic Components: Precision brass terminals, pins, contacts, and connectors provide reliable conductivity for electronic and electrical assemblies.
2.Plumbing Fittings: Corrosion-resistant brass valves, couplings, adapters, and pipe fittings are widely used in water and fluid handling systems.
3.Automotive Components: CNC machined brass inserts, sensor fittings, and electrical connectors support durability and reliable performance in automotive assemblies.
4.Industrial Equipment: Brass bushings, bearings, gears, and valve components offer low-friction operation for various industrial machinery applications.
5.Medical Devices: Precision brass parts are used in selected medical instruments and equipment requiring dimensional accuracy and reliable performance.
6.Instrumentation & Control Systems: Machined brass fittings, housings, and connectors are commonly used in measuring, monitoring, and control equipment.
Frequently Asked Questions
A: We machine a wide range of steel materials including carbon steel, stainless steel (304/316), alloy steel, and tool steel. Each material can be selected based on strength requirements, corrosion resistance, machinability, and cost targets for different industrial applications.
A: Steel CNC machining typically achieves tolerances from ±0.01 mm to ±0.05 mm, depending on part geometry, structure complexity, and material grade. With proper process control and inspection, high-precision parts can meet strict engineering and functional requirements.
A: Yes, hardened steel can be machined using specialized cutting tools and optimized machining strategies. While it is more challenging than standard steel, we can maintain stable accuracy and surface quality, although machining time and cost may increase accordingly.
A: Steel provides significantly higher strength, hardness, and wear resistance compared to aluminum, making it more suitable for load-bearing, high-stress, and long-term structural applications. Aluminum is lighter and easier to machine, but steel performs better in demanding mechanical environments.
A:We offer multiple finishing options including black oxide, electroplating (zinc or nickel), sand blasting, powder coating, and heat treatment. These processes improve corrosion resistance, surface durability, and appearance depending on the application requirements.
A: The cost is influenced by material grade, part complexity, tolerance requirements, batch size, machining time, and surface finishing. More complex geometries, tighter tolerances, and harder materials typically increase both machining time and overall cost.