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Custom Brass Machining and Precision CNC Brass Parts Manufacturer – MQJM

MQJM Brass Material Grades – CNC Machining Brass Parts & Precision Brass Manufacturing

Brass primarily consists of copper and zinc, often combined with other elements such as lead, iron, tin, or aluminum to tailor its mechanical and physical properties. Each brass alloy exhibits unique characteristics that directly impact its suitability for specific applications. Therefore, a thorough understanding of brass compositions is essential for selecting the right material for your project. Below are four common brass grades we offer, designed to help you choose the best match for your design requirements.

C26000 (Free-Cutting Brass / Lead-Free Brass)

Contains approximately 70% copper and 30% zinc, formulated without lead to meet environmental regulations like RoHS. Excellent corrosion and oxidation resistance. Good ductility and formability, suitable for stamping, drawing, and other forming processes.

Widely used in plumbing fittings, valves, automotive radiators, and electronic connectors where lead-free and environmental compliance is required.

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C27000 (Free-Machining Brass)

Contains small amounts of lead (0.5%–3%) to greatly improve machinability and chip formation.Balanced mechanical properties with moderate toughness. Suitable for various custom brass machining operations such as turning, milling, and drilling.Ideal for manufacturing screws, gears, precision brass components, and parts produced on automatic lathes.

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C28000 (Cartridge Brass / Standard Brass)

Slightly higher copper content than C26000, typically around 67%–68%.Good mechanical strength and corrosion resistance.Excellent formability and weldability, suitable for cold working. Commonly used in decorative hardware, electronic precision brass parts, architectural fittings, and musical instruments.

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C36000 (Free-Machining Brass)

Contains about 2.5%–3% lead, offering exceptional machinability for high-speed, high-efficiency processing. Produces smooth surfaces and tight dimensional tolerances. Good mechanical strength and toughness. Widely applied in high-precision screws, nuts, gears and valve precision brass components.

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C37700 (High-Strength Brass)

Higher copper content enhances strength and wear resistance. Superior mechanical properties and fatigue resistance. Suitable for components subjected to higher mechanical stresses. Used in bearings, springs, mechanical gears, and wear-resistant precision brass parts.

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C46400 (Aluminum Brass)

Contains 5%–11% aluminum, significantly improving corrosion resistance, especially in marine and chemical environments. High strength and excellent resistance to stress corrosion cracking. Good weldability, ideal for complex structural parts. Mainly used in shipbuilding, marine engineering, chemical processing equipment, heat exchangers, and piping systems.

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Why Brass Material Excels for Precision Brass Parts Manufacturing

Brass is a highly favored material in China CNC machining service due to its excellent machinability, durability, and aesthetic appeal. One of the most significant advantages of brass is its ease of cutting, which allows for faster production speeds, reduced tool wear, and lower machining costs compared to many other metals. This makes brass ideal for high-precision CNC milling, turning, and drilling, especially for complex geometries and fine details. Additionally, brass exhibits strong corrosion resistance, making it suitable for precision brass components used in plumbing, electronics, marine, and decorative hardware applications. Its natural antibacterial properties further expand its use in medical and sanitary equipment. Brass also provides a smooth surface finish and an attractive golden appearance, often eliminating the need for further surface treatment. With consistent dimensional stability and excellent thermal and electrical conductivity, CNC precision brass parts perform reliably in both functional and aesthetic applications. Choosing brass in CNC services offers a cost-effective balance of performance, machinability, and visual appeal, making it an ideal solution for precision brass components across various industries.

Versatile Uses of Brass CNC Parts and Precision Machined Brass Components

Precision Plumbing and Fitting Components

Precision Plumbing and Fitting Components

Custom brass machining is widely used to produce valves, pipe fittings, and connectors for plumbing systems. Brass offers excellent corrosion resistance and machinability, ensuring leak-proof, durable connections in both residential and industrial pipelines.


Electrical and Electronic Hardware

Electrical and Electronic Hardware

Due to its superior electrical conductivity, brass CNC machining is ideal for terminals, sockets, contacts, and custom electrical connectors. Brass CNC machine electrical parts ensure reliable current flow and stable performance in electronic devices and power systems.


Custom Mechanical Parts and Gears

Custom Mechanical Parts and Gears

Brass is commonly CNC machined into gears, bushings, spacers, and precision mechanical parts. Its low friction coefficient and dimensional stability make it ideal for precision brass components that require smooth movement and tight tolerances.


Decorative and Luxury Hardware

Decorative and Luxury Hardware

Thanks to its aesthetic appeal and easy polishability, brass CNC machining is also used for crafting high-end decorative elements, including door handles, watch parts, musical instruments, and luxury hardware with a premium finish.


MQJM's Expertise in Precision Brass CNC Machining

MQJM is one of trusted custom CNC precision machining suppliers that effectively utilizes the unique properties of brass to deliver high-quality, precision brass components. Brass, an alloy of copper and zinc, is well known for its excellent machinability, corrosion resistance, and aesthetic appeal, making it ideal for parts in industries such as electronics, plumbing, automotive, and decorative hardware.


At MQJM, we prioritize material selection as a key factor in successful brass CNC machining. Our experienced engineers carefully evaluate each project's technical requirements—such as strength, conductivity, wear resistance, and surface finish—before recommending the most suitable brass grade, such as C360 for high-speed machining or C464 for marine applications.


By leveraging advanced CNC equipment and optimized tooling strategies, MQJM ensures precise tolerances, clean edges, and excellent repeatability when machining brass. Our in-house capabilities include CNC milling, turning, drilling, and threading, supported by a strict quality management system that guarantees each part meets client specifications.


MQJM also offers value-added services like surface finishing and custom prototyping, allowing for full customization and faster lead times. Through a combination of material expertise, cutting-edge technology, and a commitment to customer satisfaction, MQJM delivers efficient and reliable brass CNC machining solutions tailored to diverse industry needs.


FAQs About Precision Brass CNC Machining

What are the advantages of using brass for CNC machining?

Brass offers excellent machinability, low friction, and good corrosion resistance. It produces minimal tool wear and delivers a smooth surface finish, making it ideal for precision brass parts like valves, fittings, and decorative components.

What brass grades are commonly used in CNC machining?

Is brass suitable for both prototyping and mass production?

What industries commonly use CNC machined brass parts?

Does brass require surface treatment after CNC machining?

Is brass more cost-effective than other metals in CNC machining?

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Building 10, Gongming Second Industrial Zone, 125 Minsheng Avenue, Guangming District, Shenzhen
Building 10, Gongming Second Industrial Zone, 125 Minsheng Avenue, Guangming District, Shenzhen
info@mqjmcnc.com +86-13717187399
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