Aluminum
Aluminum alloys for housings, brackets and plates, with alloy and temper selected for the application.
CNC machining
materials
Browse metals and plastics
28 material familiesShowing all 28 materials
Select up to 3 to compare
Stainless Steel
Stainless steel grades for shafts, fittings and equipment parts, selected for the service environment and final surface condition.
Steel
Carbon and alloy steels for machined parts, with hardness, heat-treatment condition and final dimensions specified for the part.
Titanium Alloys
Commercially pure titanium and titanium alloys selected for the drawing, service conditions and inspection requirements.
Brass
Brass fittings, bushings and inserts with the specified alloy, threads and any required plating.
Copper
Copper parts for electrical contacts and heat transfer, with the grade, functional contact faces and any electrical or thermal acceptance requirements specified.
Inconel Alloys
Nickel-alloy components with grade, delivery condition and processing sequence defined for the application.
PEEK
Unfilled and reinforced PEEK grades selected for temperature, load, wear and electrical requirements.
POM / Acetal
POM-C, POM-H and modified grades for gears, guides, spacers and fitted components.
Nylon / PA
PA6, PA66 and cast nylon parts, with moisture condition, assembly fit and service temperature specified.
Acrylic / PMMA
Acrylic covers, windows and housings with specified visible faces, polishing areas and mounting features.
2024 Aluminum CNC Machining
Custom 2024 aluminum brackets, mounting plates, hubs and housings. Compare stock tempers, machining, protective finishes and drawing-based inspection.
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303 stainless steel CNC machining for turned and locating parts
Custom 303 stainless studs, spacers, pins, bushings and locating parts. Review free-machining stock, finished interfaces and sulfur-related fabrication tradeoffs.
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316 stainless steel CNC machining for fluid and equipment parts
Custom 316 and 316L connectors, housings, sleeves and equipment parts. Compare material condition, machined interfaces, cleaning and specified passivation.
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4140 steel CNC machining for shafts, hubs and wear components
Custom 4140 steel shafts, hubs, pins and milled components. Compare annealed and prehard stock, section-dependent properties and the finished hardness and fits.
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4340 Steel CNC Machining
Custom 4340 steel shafts, hubs, pins and clevises. Compare section-dependent stock properties, machining routes and finished-part inspection with VETCNC.
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6061-T6 Aluminum CNC Machining
Custom 6061 aluminum housings, plates and turned parts. We match T6, T651 or T6511 stock to the drawing, with defined fits, finishing and inspection.
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7075 aluminum CNC machining for high-strength parts
Custom 7075 aluminum parts machined to your drawing. Compare T651 and T7351 strength, stock conditions and machining for brackets, hubs and pocketed components.
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ABS
Discuss ABS CNC machining for housings, covers and prototype parts. Specify material grade, thin-wall features, color, appearance and inspection with VETCNC.
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Bronze CNC Machining
Custom bronze bushings, sleeves and wear parts machined to your drawing. Compare C93200, C95400 and C54400, then request a bronze machining quote from VETCNC.
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Cast Iron
Cast iron CNC machining for housings, bushings, covers and fixtures. Discuss gray or ductile iron, casting supply, datums, allowances and inspection with VETCNC.
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HDPE CNC machining for custom polyethylene parts
HDPE CNC machining for custom guides, sleeves, contact pads and fixtures. We machine specified polyethylene stock to your component drawing and fit requirements.
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PEI CNC Machining
Custom PEI standoffs, terminal blocks, sleeves and instrument parts. Compare unfilled and glass-filled stock, machining, fits and inspection with VETCNC.
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Polycarbonate CNC machining for clear mechanical parts
We CNC machine polycarbonate panels, housings, brackets, sleeves and rings. Define clear viewing areas, mounting fits, PC stock and surface requirements.
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Polypropylene CNC machining for custom PP components
We CNC machine polypropylene blocks, sleeves, support plates, adapters and rings. Compare PP-H and PP-C stock and define the fits, exposure and inspection.
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PPS CNC Machining
Custom PPS rings, bushings, flow blocks and instrument components. Compare unfilled and wear-modified stock, seating features and inspection with VETCNC.
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PTFE
PTFE CNC machining for custom rings, bushings, valve seats and insulating parts. Review grades, free-state dimensions, installed fits and inspection with VETCNC.
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UHMW-PE CNC Machining
Custom UHMW-PE wear strips, chain guides, bushings and conveyor parts. Compare stock, contact conditions, profile machining and inspection with VETCNC.
Explore pageNo materials match your search
Try a material family or grade, such as aluminum, 316, PEEK or acetal.
The quotation confirms the exact grade, condition, availability and machining requirements.
What does your
part need to do?
Read the material & design guide Loads and assembly fits
Define the load, mating parts and final inspection condition. Compare the specified grade together with the part geometry, since one material name covers very different tempers and stock conditions.
Temperature and chemical exposure
List the temperatures, exposure time and contact media. Suitability for an environment is assessed against the temperatures, exposure time and contact media you list.
Slide, rotate or insulate
Specify contact surfaces, motion, moisture and electrical requirements. Filled and unfilled plastic grades need different checks.
Meet a surface requirement
Mark conductive contacts, visible faces and areas that must stay uncoated. Agree appearance or functional acceptance after finishing.
Material selection notes & references
Compare the shortlisted grades against the part’s loads, environment and required tests.
Reference reading: Ensinger — material selection; PEEK; POM; polyamide; Special Metals — INCONEL alloy 625.
Questions about CNC machining materials
Which materials can I explore for CNC machining?
The directory currently includes 10 metal families and 12 engineering plastics. Other classified materials are also shown above. Explore the material pages above, or use the metal machining and plastic machining overviews. Confirm the exact grade, availability and drawing requirements during quotation.
How do I choose between a metal and an engineering plastic?
Start with the part’s load, assembly fit, temperature, contact media, electrical requirements and expected life. Then compare specific grades and the finished geometry. Suitability comes out of that whole picture, compared across specific grades and the finished geometry. Use the materials and design guide to prepare the requirements for an engineering review.
Is the material grade enough to define my order?
Not always. A complete material requirement may also need the product form, temper or heat-treatment condition, permitted substitutions and required records. For plastics, specify the exact grade, fillers and any agreed conditioning requirements. The relevant material page helps identify what to clarify. Send the grade you need and we check availability for the order.
Can I ask about a machining material that is not listed?
Yes. Send the material designation or datasheet, drawing and quantity through Contact Us. We will review availability and machining requirements; any proposed substitute needs your approval.
Can a similar grade replace the material on my drawing?
Only after the responsible customer or designer approves the change. Mechanical, thermal, chemical and processing behaviour are compared grade by grade before a change is approved. Record the proposed grade and condition, the reason for the change and any required verification. See the material substitution discussion before changing the released specification.
What should I specify for a CNC-machined plastic part?
State the exact grade, whether it is filled or unfilled, the load and mating parts, temperature, moisture or chemical exposure and inspection condition. These details matter when reviewing PEEK, POM, nylon or acrylic; appearance alone does not identify a grade. Begin with the engineering plastics overview, then follow the relevant material page.
How should surface finishing influence material selection?
Identify the intended finish together with the material grade and final acceptance requirements. Mark functional contacts, fitting surfaces, visible faces and areas that must stay uncoated. Do not assume the same treatment is suitable for every material or that pre-finish dimensions define the finished part. The materials and design guide explains what to agree on the drawing.
Can I request material certificates and batch traceability?
Yes. Specify the documents, material or lot identification and traceability scope you need when requesting a quote. Confirm what the selected supply and manufacturing route can provide, and what is included in the order. A reference to a material grade is not a certificate. Use the RFQ guide to include these requirements clearly.
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