Aluminum
Lightweight, machinable and suitable for anodizing.
- Typical applications
- Housings, brackets, heat sinks, fixtures and electronics parts.
- Common grades
- 6061, 6082, 7075 and project-specified alloys
24 Hours QuoteCNC Machining Materials
Choose CNC machining materials by function, tolerance needs, finishing requirements and production quantity. JADMAKE reviews drawings, CAD files and material notes before quotation so the material plan matches the machining process.
- Mechanical load, temperature and wear conditions
- Corrosion resistance, conductivity or insulation needs
- Target surface finish and cosmetic requirements
Material Options
Common Materials for Custom CNC Machined Parts
The best material is not only the strongest or cheapest option. Buyers should balance machinability, strength, corrosion resistance, surface finishing, tolerance stability and supply availability.
Stainless Steel
Corrosion resistance with higher machining force than aluminum.
- Typical applications
- Medical, food equipment, shafts, fittings and precision hardware.
- Common grades
- 304, 316, 17-4PH and drawing-specified grades
Carbon and Alloy Steel
Good strength, wear resistance and heat treatment options.
- Typical applications
- Industrial machinery parts, tooling, fixtures and structural parts.
- Common grades
- 1018, 1045, 4140 and project-specified steels
Brass and Copper
Electrical conductivity, thermal conductivity and good machinability.
- Typical applications
- Connectors, bus bars, RF parts, terminals and heat transfer parts.
- Common grades
- C360 brass, C110 copper and specified copper alloys
Titanium
High strength-to-weight ratio and corrosion resistance.
- Typical applications
- Aerospace, medical, optical, marine and high-performance components.
- Common grades
- Grade 2, Grade 5 and drawing-specified titanium
Engineering Plastics
Low weight, insulation, wear resistance and chemical options.
- Typical applications
- Insulators, bushings, guides, covers and medical equipment parts.
- Common grades
- POM, PEEK, PTFE, nylon, PC and specified plastics
Selection Guide
How to Choose a CNC Machining Material
If a drawing already specifies a material grade, JADMAKE will quote based on that requirement. If the grade is open, use the factors below to narrow the material before engineering review.
Function First
Start with load, temperature, corrosion, conductivity, weight and assembly requirements.
Tolerance Stability
Thin walls, large flat surfaces and stress-relieved material can affect dimensional control.
Finish Compatibility
Confirm anodizing, plating, passivation, coating or polishing needs before final material selection.
Tolerance stack
Tolerance stack, thin walls and deformation risk
Prototype quantity
Prototype quantity, repeat batch needs and cost target
Finishing
Material and Surface Finish Compatibility
Surface treatment can change appearance, corrosion resistance, wear behavior and final dimensions. Critical dimensions should be reviewed with the finish requirement shown on the drawing.
AluminumAnodizing, hard anodizing, bead blasting, painting, powder coating, polishing
Stainless SteelPassivation, polishing, bead blasting, electropolishing by project requirement
SteelBlack oxide, zinc plating, nickel plating, painting, powder coating, heat treatment
Copper / BrassPolishing, nickel plating, tin plating, passivation or anti-tarnish treatment
PlasticsAs-machined, polishing, vapor smoothing or application-specific finishing
Material Pages
Browse Material-Specific CNC Machining Pages
Use these pages for more focused material guidance. Each page should eventually carry unique keywords, applications, machining notes, finishing considerations and RFQ guidance.
Aluminum
Review CNC machining notes, common applications and quote inputs for aluminum parts.
Learn moreStainless Steel
Review CNC machining notes, common applications and quote inputs for stainless steel parts.
Learn moreSteel
Review CNC machining notes, common applications and quote inputs for steel parts.
Learn moreBrass
Review CNC machining notes, common applications and quote inputs for brass parts.
Learn moreCopper
Review CNC machining notes, common applications and quote inputs for copper parts.
Learn moreTitanium
Review CNC machining notes, common applications and quote inputs for titanium parts.
Learn morePlastic
Review CNC machining notes, common applications and quote inputs for plastic parts.
Learn moreSuperalloy
Review CNC machining notes, common applications and quote inputs for superalloy parts.
Learn moreKovar Alloy
Review CNC machining notes, common applications and quote inputs for kovar alloy parts.
Learn moreRFQ Inputs
Material Information to Include in Your CNC RFQ
Clear material requirements help avoid re-quoting, wrong finish assumptions and delays before production. If the exact grade is not fixed, explain the application so alternatives can be reviewed.
Exact grade or acceptable alternativesExample: Aluminum 6061-T6 required, or 6082 acceptable after review.
Critical material propertiesStrength, conductivity, corrosion resistance, temperature, wear or insulation requirements.
Certificate requirementsState whether material certificates, surface treatment certificates or inspection reports are needed.
Finish and masking needsInclude color, texture, visible surfaces, coating thickness and areas that must stay uncoated.
Quantity and repeat demandShare prototype quantity, first batch quantity and likely repeat orders if known.
Need Help Choosing a CNC Material?
Send drawings, CAD files, target quantity, required finish and application notes. JADMAKE will review the material plan before quotation.
Material Review | Finish Planning | Drawing-Based Tolerances