Aluminum Alloys
Good for lightweight machined parts, housings, brackets, plates, fixtures, covers, and components requiring anodizing or clean surface finish.
Review Aluminum AlloysEngineering-oriented CNC machining support
CNC Machining Materials for Custom Parts
Review aluminum, stainless steel, carbon steel, and selected engineering plastics for custom CNC parts, with material, finishing, tolerance, and inspection questions clarified before quotation.
Aluminum, stainless steel and carbon steelEngineering plastics for selected partsFinishing and heat treatment reviewMaterial-related tolerance risks
Material scope
Material Groups We Review
Material selection affects machining time, tolerance stability, surface finish, weight, corrosion resistance, strength, inspection requirements, and cost. KENDORIC supports drawing-based CNC machining projects using aluminum alloys, stainless steel, carbon steel, and selected engineering plastics. If the material is not finalized, buyers can share the part function, operating environment, and assembly requirements for review before quotation.
Aluminum Alloys
Lightweight parts, housings, brackets, plates, fixtures, covers, and anodized components.
Stainless Steel
Corrosion-resistant or stronger parts such as shafts, sleeves, bushings, fittings, pins, and brackets.
Carbon Steel
Mechanical parts, tooling components, blocks, shafts, fixtures, and parts that may require coating or heat treatment.
Engineering Plastics
Lightweight, insulating, low-friction, wear-related, or non-metallic components where material behavior should be reviewed.
RFQ comparison
CNC Machining Material Comparison for RFQ Review
Use this comparison to identify the material questions that should be included with drawings before quotation.
| Material Group | Common Reasons to Use It | RFQ Notes for Buyers |
|---|---|---|
| Aluminum alloys | Lightweight parts, good machinability, housings, brackets, plates, fixtures, covers, and spacers | Specify grade, anodizing or finish needs, cosmetic surfaces, and critical flatness or hole positions |
| Stainless steel | Strength, durability, corrosion resistance, shafts, sleeves, fittings, pins, bushings, and brackets | Confirm grade, surface finish, thread details, critical diameters, and inspection requirements |
| Carbon steel | Mechanical strength, tooling parts, structural components, shafts, blocks, and fixtures | Specify grade, heat treatment, coating or anti-rust treatment, and load-related dimensions |
| Engineering plastics | Lightweight, insulation, low friction, guides, spacers, and non-metallic components | Confirm plastic type, temperature, wear conditions, moisture sensitivity, and tolerance expectations |
Selection checkpoints
How to Choose a CNC Machining Material
Function and Load
How the part carries force, supports assembly, handles wear, or works with mating components.
Environment
Corrosion, moisture, temperature, chemicals, outdoor use, or cleanliness requirements.
Machining and Finishing
Machinability, surface finish, anodizing, plating, coating, heat treatment, and marking.
Tolerance and Inspection
Flatness, holes, threads, critical diameters, fit surfaces, and report expectations.
Common material choices
Common Material Options for CNC Projects
Stainless Steel
Used for stronger or corrosion-resistant machined parts such as shafts, sleeves, fittings, bushings, pins, and precision components.
Review Stainless SteelCarbon Steel
Suitable for mechanical components, tooling parts, blocks, shafts, and parts where strength, cost, coating, or heat treatment needs to be reviewed.
Engineering Plastics
Used for lightweight, insulating, wear-related, low-friction, or non-metallic parts where tolerance expectations and material behavior should be checked.
Production factors
Material, Finishing and Inspection Factors
Tolerance Stability
Different materials respond differently to thin walls, flatness, tight holes, threads, bores, and critical dimensions.
Finishing Effects
Anodizing, plating, coating, passivation, heat treatment, and marking can affect appearance, dimensions, corrosion protection, and lead time.
Inspection Planning
Critical dimensions, material certificates, finish requirements, and report expectations should be clarified before quotation.
FinishingCNC Surface FinishingClarify surface finishing requirements before quotation.View resourceTolerancesCNC Machining TolerancesIdentify tolerance risks and inspection expectations before quotation.View resourceQualityQuality InspectionClarify inspection communication and critical dimension checks.View resource
Quotation inputs
RFQ Information Needed for Material Review
Files
- 2D drawings
- 3D CAD / STEP files
- Sample photos if available
Material Requirements
- Material grade
- Alternative material allowed or not
- Surface finish
- Heat treatment if required
Project Details
- Quantity
- Target lead time
- Delivery destination
- Critical dimensions / inspection needs
Send Material Requirements for Review
Share your 2D drawings, 3D CAD files, material grade, quantity, finish, tolerance requirements, and delivery details for material and machining review before quotation.
Get Material Feedback for Your CNC Project