CNC Materials Machining
Explore our extensive selection of CNC machining materials to find the perfect solution for your project
CNC Material List
We offer a variety of high-quality CNC machining materials to meet the needs of different industries and applications. Each material undergoes strict screening to ensure optimal machining performance and product quality.
Aluminum Alloy
Easy to Machine
High Strength
Lightweight
Aluminum alloy is one of the most commonly used materials in CNC machining, featuring a good strength-to-weight ratio, excellent thermal conductivity, and corrosion resistance. Widely used in aerospace, automotive, electronics, and other industries.
Density
2.7 g/cm³
Hardness
HB 30-150
Tensile Strength
70-600 MPa
Machining Difficulty
Brass
High Toughness
Easy to Cut
Good Conductivity
Brass is a copper-zinc alloy with good machinability and corrosion resistance, featuring an attractive surface. Commonly used to manufacture precision parts, decorations, electronic components, plumbing fittings, etc.
Density
8.4-8.7 g/cm³
Hardness
HB 30-150
Tensile Strength
HB 50-150
Machining Difficulty
Stainless Steel
Corrosion Resistant
High Strength
Aesthetic
Stainless steel has excellent corrosion resistance and high strength, widely used in food processing equipment, medical devices, architectural decoration, aerospace, and other fields. Common grades include 304, 316, 416, etc.
Density
7.9-8.0 g/cm³
Hardness
HB 120-300
Tensile Strength
400-900 MPa
Machining Difficulty
Carbon Steel
High Strength
Wear Resistant
Heat Treatable
Carbon steel is an alloy primarily composed of iron and carbon, classified into low, medium, and high carbon steel based on carbon content. It has high strength, good toughness, and wear resistance, widely used in machinery manufacturing, automotive industry, and other fields.
Density
7.85 g/cm³
Hardness
HB 100-300
Tensile Strength
400-1200 MPa
Machining Difficulty
Titanium Alloy
High Strength
Lightweight
Corrosion Resistant
Titanium alloy has an excellent strength-to-weight ratio and corrosion resistance, widely used in aerospace, medical devices, marine engineering, and other high-end fields. Common grades include Ti-6Al-4V, etc.
Density
4.4-4.5 g/cm³
Hardness
HB 280-380
Tensile Strength
800-1200 MPa
Machining Difficulty
Engineering Plastics
Lightweight
Insulating
Easy to Machine
Engineering plastics have good mechanical properties and chemical stability, widely used in electronics, automotive, medical devices, and other fields. Common types include ABS, PC, POM, PA, etc.
Density
1.0-1.5 g/cm³
Hardness
Shore 70-100
Tensile Strength
30-100 MPa
Machining Difficulty
CNC Material Machining Selection Guide
Choosing the right CNC machining material significantly impacts product performance and cost. Below are common factors to consider when selecting materials.
Mechanical Properties
- Tensile Strength: Material's ability to resist tensile forces
- Hardness: Material's ability to resist localized deformation
- Toughness: Material's ability to absorb energy and resist fracture
- Elastic Modulus: Ratio of stress to strain within the elastic deformation range
Physical Properties
- Density: Ratio of mass to volume
- Thermal Expansion Coefficient: Expansion or contraction rate of material under temperature changes
- Thermal Conductivity: Material's ability to conduct heat
- Electrical Conductivity: Material's ability to conduct electricity
Chemical Properties
- Corrosion Resistance: Material's ability to resist corrosion from surrounding media
- Oxidation Resistance: Material's ability to resist oxidation at high temperatures
- Chemical Stability: Stability of material in chemical reactions
- Compatibility with Other Materials: Interaction with other contacted materials
Material Selection Flowchart
Application Requirements
Recommended Materials
Main Advantages
Typical Applications
Need lightweight and high strength
Aluminum Alloy, Titanium Alloy
Lightweight, high strength, corrosion resistant
Aerospace components, automotive parts
Need high corrosion resistance
Stainless Steel, Titanium Alloy
Excellent corrosion resistance
Medical devices, marine equipment
Need good electrical conductivity
Brass, Aluminum Alloy
Good conductivity, easy to machine
Electronic components, connectors
Need high hardness and wear resistance
Carbon Steel, Alloy Steel
High hardness, good wear resistance
Tools, molds
Need insulation and low cost
Engineering Plastics
Good insulation, lightweight, low cost
Electronic product housings, daily necessities
Need high-temperature stability
Titanium Alloy, Stainless Steel
Good high-temperature strength, oxidation resistant
Aircraft engine components, high-temperature equipment
Frequently Asked Questions
Common questions about CNC machining materials to help you better choose materials for your project.
How to choose the right CNC machining material for my project?
When selecting CNC machining materials, consider the following factors:
Mechanical requirements (strength, hardness, toughness, etc.)
Physical requirements (density, thermal conductivity, electrical conductivity, etc.)
Chemical requirements (corrosion resistance, oxidation resistance, etc.)
Machining difficulty and cost
Product usage environment and lifespan requirements
Appearance requirements
Our engineers can recommend the most suitable material based on your specific needs.
How do CNC machining costs differ for different materials?
CNC machining costs are influenced by material price, machining difficulty, and processing time. Generally:
Aluminum alloys and engineering plastics have relatively lower costs, suitable for mass production
Brass has moderate machining difficulty and medium cost
Stainless steel has higher machining difficulty and cost
Titanium alloy has extremely high machining difficulty and the highest cost
We provide the most competitive prices based on your chosen material and machining complexity.
What are common surface treatment methods?
Common CNC machining material surface treatments include:
Anodizing: Mainly for aluminum alloys, improves surface hardness and corrosion resistance, available in various colors
Electroplating: Such as zinc plating, chrome plating, nickel plating, etc., enhances corrosion resistance and aesthetics
Passivation: Mainly for stainless steel, improves corrosion resistance
Spraying: Provides various colors and surface effects, increases wear and corrosion resistance
Polishing: Improves surface finish, enhances product appearance
Brushing: Creates textured effects, often used for high-decorative products
Different materials require different surface treatments. We provide professional advice based on your needs.
What are the requirements for materials in CNC machining?
Requirements for materials in CNC machining mainly include:
Materials should have good machinability to ensure processing efficiency and surface quality
Material hardness and toughness should be moderate – too hard accelerates tool wear, too soft causes deformation
Material internal structure should be uniform, avoiding defects like impurities and pores
Material thermal expansion coefficient should be small to reduce thermal deformation during machining
Material should have sufficient strength and stiffness to withstand cutting forces during machining
We only use materials that meet high-quality standards to ensure machining quality and product performance.
How to determine if material quality is qualified?
Methods to determine CNC machining material quality include:
Check material quality certificates to confirm chemical composition and mechanical properties meet standards
Visual inspection: Material surface should be smooth, free of cracks, rust, impurities, and other defects
Hardness testing: Use a hardness tester to ensure compliance with requirements
Density testing: Determine composition uniformity by measuring material density
Metallographic analysis: For metal materials, check internal microstructure through metallographic analysis
Non-destructive testing: Such as ultrasonic testing, X-ray testing, etc., to detect internal defects
We conduct strict quality inspections on all purchased materials to ensure every batch meets high-quality standards.