Metal CNC machining

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CNC Metal Machining Services From China

Get custom CNC metal machining solutions tailored to your needs from the experts in China.

CNC Turning

Precisely and efficiently manufacture cylindrical parts with tolerances as low as ±0.002mm.

CNC Milling

Specialize in producing complex parts with intricate shapes and fine details.

Wire EDM

Cut hard metals and complex shapes that traditional machining methods cannot achieve, ensuring precision and high-quality finishes.

Why Choose Our Metal CNC Machining Services?

Precision and Accuracy

With tolerances as tight as +/- 0.002mm, we ensure that every component we produce meets your exact specifications.

Fast Turnaround Times

Whether you need a single prototype or a large production run, we can deliver your parts on time without compromising on quality.

Cost-Effective Solutions

By optimizing our production processes and minimizing waste, we can offer competitive pricing without sacrificing quality.

Comprehensive Services

In addition to CNC machining, we offer a range of complementary services, including design assistance, material selection, surface finishing, and assembly.

Strict Quality Control

Our quality assurance processes include First Article Inspection (FAI), in-process checks, and final inspections to ensure that every part meets the highest standards.

Global Presence

With offices in Shenzhen and Hong Kong, and a manufacturing base in Dongguan, we are strategically positioned to serve customers worldwide.

Metal Materials Available for CNC Machining

Richconn has an extensive material supply chain in China, so you don’t need to worry about not finding the right materials for your project.

Aluminum

Properties: Lightweight, corrosion-resistant, excellent strength-to-weight ratio, good thermal and electrical conductivity.
Common Grades: 6061, 7075, 2024.
Applications: Aerospace components, automotive parts, consumer electronics, and medical devices.
Advantages: Easy to machine, excellent surface finish, cost-effective.

Steel

Properties: High tensile strength, durability, wear-resistant, available in various grades.
Common Grades: 1018, 1045, 4140, A36.
Applications: Structural components, industrial machinery, tools, automotive parts.
Advantages: Versatile, high strength, excellent machinability, available in various finishes.

Stainless Steel

Properties: Corrosion-resistant, high tensile strength, excellent temperature resistance.
Common Grades: 304, 316, 303, 17-4 PH.
Applications: Medical instruments, food processing equipment, marine applications, automotive parts.
Advantages: Long-lasting, hygienic, aesthetically appealing, can withstand harsh environments.

Brass

Properties: Low friction, excellent thermal and electrical conductivity, corrosion-resistant.
Common Grades: C360, C260.
Applications: Plumbing fittings, electrical components, musical instruments, decorative parts.
Advantages: Easy to machine, excellent surface finish, antimicrobial properties, good for precision parts.

Copper

Properties: Exceptional thermal and electrical conductivity, malleable, corrosion-resistant.
Common Grades: C110, C101.
Applications: Electrical connectors, heat exchangers, plumbing components.
Advantages: Highly conductive, easy to work with, excellent for electrical and thermal applications.

Titanium

Properties: High strength-to-weight ratio, corrosion-resistant, biocompatible.
Common Grades: Grade 2, Grade 5 (Ti-6Al-4V).
Applications: Aerospace components, medical implants, high-performance automotive parts.
Advantages: Lightweight, extremely strong, withstands extreme temperatures and harsh environments.

Magnesium

Properties: Lightweight, good strength-to-weight ratio, excellent machinability.
Common Grades: AZ31B, AZ91D.
Applications: Aerospace components, automotive parts, electronic housings.
Advantages: One of the lightest structural metals, easy to machine, good for applications requiring weight reduction.

Nickel Alloys

Properties: High strength, excellent corrosion resistance, heat-resistant, can withstand extreme environments.
Common Grades: Inconel 625, Inconel 718, Monel 400.
Applications: Aerospace components, gas turbines, chemical processing equipment, marine applications.
Advantages: Maintains strength and integrity at high temperatures, highly resistant to corrosion and oxidation.

Tool Steel

Properties: Extremely hard, abrasion-resistant, retains a sharp cutting edge, can be heat-treated.
Common Grades: A2, D2, O1, M2.
Applications: Cutting tools, dies, molds, punches, industrial machinery components.
Advantages: Superior wear resistance, excellent machinability when annealed, maintains hardness and shape under high-stress conditions.

Metal Material Comparison Guide

By comparing the properties of different materials, choose the metal that best suits your project.

Materials	Density (g/cm³)	Tensile Strength (MPa)	Hardness (HB)	Machinability	Corrosion Resistance	Thermal Conductivity (W/m·K)	Electrical Conductivity (%IACS)	Cost	Common Applications
Aluminum 6061	2.70	310	95	Excellent	Good	167	43	Moderate	Aerospace, automotive, structural
Stainless Steel 304	8.00	580	200	Fair	Excellent	16	2	High	Food processing, medical equipment, kitchenware
Brass	8.50	360	110	Excellent	Good	109	28	Moderate	Plumbing, electrical connectors, decorative items
Titanium Grade 5	4.43	895	349	Poor	Excellent	7.2	1	Very High	Aerospace, medical implants, high-performance applications
Mild Steel (1018)	7.85	440	126	Good	Poor	50	12	Low	Construction, automotive, general engineering
Copper	8.96	210	40	Good	Poor	385	100	High	Electrical wiring, plumbing, heat exchangers
Inconel 718	8.19	1240	330	Poor	Excellent	11.4	1	Very High	Aerospace, gas turbines, chemical processing
Tool Steel (D2)	7.70	750	250	Fair	Good	20	15	High	Cutting tools, dies, molds
Nickel 200	8.89	462	110	Fair	Excellent	90	22	High	Chemical processing, marine applications
Magnesium AZ31	1.77	260	65	Excellent	Fair	96	40	Moderate	Aerospace, automotive, electronics
Zinc	7.14	150	30	Excellent	Good	116	29	Low	Die casting, automotive, construction
Chromoly Steel (4130)	7.85	560	217	Good	Fair	42	10	Moderate	Aerospace, motorsport, structural
Cast Iron (Gray)	6.90	200	180	Poor	Good	52	8	Low	Machinery, automotive, construction

Metal CNC Machining Tolerances

Limits for nominal size	Tolerances
0.5mm~3mm	±0.05mm
> 3mm~6mm	±0.05mm
> 6mm~30mm	±0.1mm
> 30mm~120mm	±0.15mm
> 120mm~400mm	±0.2mm
> 400mm~1000mm	±0.3mm
> 1000mm~3000mm	±0.5mm
> 2000mm~4000mm	±2mm

Factors to Consider When Choosing Metal for CNC Machining

Selecting the right metal for CNC machining is critical to achieving the desired performance and quality of the part. Several factors need to be considered to ensure optimum results:

1. Material Characterization

Factors such as hardness, tensile strength, thermal conductivity, and corrosion resistance play a significant role in determining the suitability of a material for your application.

2. Tolerance and Precision

High precision parts require more meticulous machining and inspection, often leading to higher costs.

3. Surface Finish

Some parts may need a smooth, polished finish, while others require specific textures or coatings.

4. Production Volume

For high-volume production, automated CNC machines with multi-axis capabilities are often more efficient and cost-effective. For smaller batches or prototypes, flexibility and quick setup times might be more critical.

5. Lead Time

High precision parts require more meticulous machining and inspection, often leading to higher costs.

6. Cost

Factors such as material costs, machining time, finishing processes, and inspection requirements will all affect the final price.

7. Post-Machining Processes

Some parts may require additional processes after machining, such as heat treatment, anodizing, or coating. Ensure your supplier can handle these processes or has reliable partners to do so, to maintain quality and consistency.

8. Communication and Support

Clear and consistent communication helps in addressing any issues promptly and ensures the project stays on track.

Strict Quality Inspection Process

From the initial material selection to the final inspection, we employ rigorous checks at each stage of production. Our advanced measurement tools and techniques, including First Article Inspection (FAI) and in-process monitoring, enable us to detect and correct any deviations promptly. This stringent approach guarantees that our customers receive parts that not only meet but exceed their specifications, ensuring optimal performance and longevity.

Advanced Quality Control Equipment

CMM

Optical Comparators

Altimeter

Surface Treatment Options for CNC Machined Metal Parts

Whether you’re looking to improve corrosion resistance, wear resistance, or achieve a specific visual appeal, our advanced surface treatment solutions are tailored to provide the optimal finish for your parts.

Application Industries for CNC Metal Machining

Metal CNC machining is widely used in various industries due to its precision, versatility, and ability to produce complex parts. Here are some of the key industries:

Aerospace

CNC machining is used to produce high-precision components such as engine parts, landing gear and structural components, ensuring that they meet stringent safety and performance standards.

Automotive

This industry relies on CNC machining for the production of various parts, including engine components, transmission parts, and custom modifications.

Medical

CNC machining is used to manufacture medical devices, implants, and surgical instruments. The precision and ability to work with biocompatible metals are critical in this field.

Marine

CNC machining is used to manufacture parts for boats and ships, such as propellers, engine components, and structural elements.

Electronics

The electronics industry uses CNC machining to create enclosures, heat sinks, and various small components that require high precision and fine detail.

Defense and Military

CNC machining produces components for weapons, vehicles, and other defense equipment.

Robotics

CNC machining is essential for creating precise and durable components for robotic systems, including frames, gears, and joints.

Industrial Equipment

Various industrial machines and tools require CNC machined parts for their construction and operation, including gears, shafts, and housings.

FAQs about Metal CNC Machining

Our facility is equipped with advanced 3-axis, 4-axis, and 5-axis CNC machines to handle a wide range of machining tasks.

Yes, we provide prototype machining services to help you test and refine your designs before full-scale production.

Lead times vary based on the complexity and volume of the order but typically range from 2 to 4 weeks.

We implement stringent quality control measures, including First Article Inspection (FAI), in-process inspections, and final inspections using advanced metrology equipment.

Yes, we accept a variety of CAD file formats including STEP, IGES, and STL. Our engineering team can also assist with file conversions if needed.

Yes, our engineering team can provide design for manufacturability (DFM) feedback and consulting services to optimize your designs for CNC machining.

We have strict confidentiality agreements in place and ensure all customer data is securely stored and protected.

Yes, our advanced CNC machines and experienced operators can handle complex geometries and achieve tight tolerances with precision.

Ready to Get a Quote for Your Custom Metal Parts?

Ready to take the next step? Contact us today to get a quote for your custom metal parts and experience the Richconn difference.

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China’s leading CNC machining manufacturer, customizing all kinds of precision parts quickly and efficiently.

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*If you have any design files that need to be sent, please email them to sales@richconn.com