PARTS IN 1-3 DAYS
Quotes On Turned Parts
We don’t have minimums, we deliver the best parts for your money, and meet your deadlines!
Every job is unique, and many require special considerations for materials, finishing, custom work, or urgent delivery – your commercial quote will be turned around by seasoned estimators who confirm all aspects of your job.
“We are extremely happy with the quality of parts
received as well as the level of service…Thanks!”
–Micah H., VP Product Development
“Finding Prototek by chance was like hitting
the Strategic Sourcing Easy Button.”
– Brian H., Senior Designer
“On time and to Spec. To EVERYONE involved
producing quality parts a hearty thanks.”
– Jim T., Senior Product Engineer
“Fastest quoting & delivery I’ve ever
experienced, & the parts look great!”
– John H., Lead Mechanical Engineer
Amazing companies choose PROTOTEK for high-quality parts done fast!
Licenses, certifications
and real turned parts service
and real turned parts service
Expertise and quality are paramount. With more than three decades of commercial turning parts experience, we’ve achieved a rich set of certifications and provide high-touch attention and service to every quote – and every job.
We engage with our customers to help them design better and more cost-effective parts before we start manufacturing. We want to be your one-stop shop for parts. Most of our business is from returning customers, and to achieve that, we strive to hit our customer’s deadlines across all project types.
Turned Parts – Working with PROTOTEK
Deep capabilities in commercial sheet metal and machining – design, turning parts, manufacturing, finishing, and even challenging assemblies.
What do we do?
- Sheet Metal Parts & Assemblies in 1-3 Days
- CNC Milled and Turned Parts in 1-3 Days
- Additive Manufactured Parts in 1 – 3 Days
- Expedited Jobs
About our fast, flexible, personalized service:
- ISO-9001:2015 Certified, ITAR Registered
- Quotes within 24 Hours
- Contact us about our expedited services
Our turned parts services & other capabilities start below but they don’t stop there. Want to talk to someone about a job, upload a file for quote or call us now.
QUOTES WITHIN 24HRS
We accept these file types STP, PRT, IGS, DXF, STL, and more!
PARTS & ASSEMBLIES – ONE STOP SHOP
NO ORDER TOO SMALL
EXPEDITED PARTS IN 1-3 DAYS
Prototek's In-house Capabilities
Sheet Metal
- Manufacturing Design Assistance
- Laser Cutting - Punching
- Material Graining
- Drilling - Countersinking - Tapping
- Forming - Bending
- Hardware Insertion
- Mechanical Assembly
- TIG, MIG, Spot Welding & Weld Grinding
- Welded Assemblies & Frames
Machining
- Up to 5-Axis Milling
- Horizontal & Vertical Milling
- 9-Axis Mill-Turn
- Turning
- CNC Routing
- Surface Grinding
- Lapping & Polishing
- Welding / Post-Weld Machining
- Heli-Coils / Hardware Inserts
Cutting & Engraving
- Wire & Sinker EDM Cutting
- Waterjet Cutting
- CO2 Laser
- Fiberoptic
Quality Assurance
- Quality Engineering Assistance
- CMM Inspection Services
- First Article and AQL Inspections
- Compliance and Document Control
Plastic & Composite Fabrication
- Plastic Thermoforming - Bending
- Annealing
- Cryogenic Deflashing & Deburring
- Plastic Welding
- Thermal, Adhesive, & Mechanical Bonding
- Vapor Polishing
- Radiological Film-Cutting Services
Assembly
- Manufacturing Design Assistance
- Tooling and Fixture Fabrication
- Electro-Mechanical Services
- Welded, Mechanical, & Small Parts Assembly
- Wire Harnessing
- Laser Cutting – Polymers & Metals
- Insert Installation
Finishing
- Powder Coating
- Painting
- Chemical Agent Resistant Coating
- Silk Screening
- Laser Engraving
- Chem Film
- Anodizing
- Black Oxide
- Bead Blasting
- Tumbling
Additive Manufacturing
- Laser Sintering
- Multi Jet Fusion
- Stereolithography
- Digital Light Processing
- Fused Filament Fabrication
- Material Jetting
- Cast Urethane
Definition of Turned Parts
Turned parts are used in different commercial sectors such as automotive, electronics, marine, appliances, and telecommunications (to name a few). A turning machine (e.g., lathe) creates these types of parts at a high rotating speed. Turned parts can be made of many materials, such as titanium and stainless steel (see a complete list of materials below).
Turned parts, also called machined components, are created by a process called turning (often done with Computer Numerical Control, CNC). CNC turning allows for advanced designs and features. This turning process is also cost-effective and creates turned components with precise depth and dimension.
The CNC turning process is carried out using a CNC machine called a CNC lathe which sometimes comes with multi-spindles. Hence, it can work on several workpieces simultaneously at high production rates.
Turned Parts Material List
| Material | Grade / Alloy | Heat Treatable | Tensile Strength (Ultimate, PSI) | Fatigue Strength (PSI) | Hardness (Brinell) | CNC Machinability (AISI Rating) | Material | Grade / Alloy | Heat Treatable | Tensile Strength (Ultimate, PSI) | Fatigue Strength (PSI) | Hardness (Brinell) | CNC Machinability (AISI Rating) |
|---|---|---|---|---|---|---|
| Aluminum | 1100-0 | No | 13000 | 5000 | 23 | 360% |
| Aluminum | 1100-H112 | No | 13000 | 4600 | 23 | 360% |
| Aluminum | 1100-H14 | No | 18000 | 7200 | 32 | 360% |
| Aluminum | 2011-T3 | Yes | 52000 | 1800 | 95 | 360% |
| Aluminum | 2011-T451 | Yes | 45000 | 11000 | 95 | 360% |
| Aluminum | 2024-0 | Yes | 27000 | 13000 | 47 | 360% |
| Aluminum | 2024-T3 | Yes | 63800 | 20000 | 120 | 360% |
| Aluminum | 2024-T351 | Yes | 57300 | 20000 | 120 | 360% |
| Aluminum | 2024-T3511 | Yes | 67000 | 18000 | 120 | 360% |
| Aluminum | 2024-T4 | Yes | 45000 | 20000 | 120 | 360% |
| Aluminum | 2024-T851 | Yes | 75000 | 20000 | 140 | 360% |
| Aluminum | 3003-H14 | No | 23000 | 8700 | 42 | 360% |
| Aluminum | 3003-H22 | No | 20000 | 10000 | 37 | 360% |
| Aluminum | 5052-0 | No | 28000 | 16000 | 47 | 360% |
| Aluminum | 5052-H112 | No | 29000 | 11000 | 55 | 360% |
| Aluminum | 5052-H32 | No | 34000 | 17000 | 60 | 360% |
| Aluminum | 5052-H34 | No | 37000 | 18000 | 68 | 360% |
| Aluminum | 5083-H112 | No | 44000 | 16000 | 75 | 360% |
| Aluminum | 5083-H116 | No | 47000 | 23000 | 83 | 360% |
| Aluminum | 5086-H111 | No | 40000 | 15000 | 65 | 360% |
| Aluminum | 5086-H112 | No | 39000 | 14000 | 69 | 360% |
| Aluminum | 5086-H116 | No | 44000 | 22000 | 81 | 360% |
| Aluminum | 6020-T8 | Yes | 43900 | N/A | 100 | 360% |
| Aluminum | 6061-T6 | Yes | 45000 | 14000 | 93 | 360% |
| Aluminum | 6061-T651 | Yes | 46000 | 14000 | 93 | 360% |
| Aluminum | 6061-T6511 | Yes | 42000 | 15000 | 95 | 360% |
| Aluminum | 6063-T52 | Yes | 25000 | 9700 | 60 | 360% |
| Aluminum | 6262-T9 | Yes | 57000 | 13000 | 120 | 360% |
| Aluminum | 7050-T7451 | Yes | 76000 | 30000 | 140 | 360% |
| Aluminum | 7050-T7651 | Yes | 80000 | 31000 | 147 | 360% |
| Aluminum | 7075-T6 | Yes | 83000 | 23000 | 150 | 360% |
| Aluminum | 7075-T651 | Yes | 80000 | 23000 | 150 | 360% |
| Aluminum | 7075-T73 | Yes | 72000 | 23000 | 140 | 360% |
| Aluminum | 7075-T7351 | Yes | 73000 | 24000 | 140 | 360% |
| Aluminum | 7475-T7351 | Yes | 72000 | 28000 | 135 | 360% |
| Aluminum | K100-S | No | 41000 | N/A | 70 | 450% |
| Aluminum | M-1 | No | 42900 | N/A | 85 | 450% |
| Aluminum | MIC-6 | No | 23900 | N/A | 65 | 450% |
| Bearing Bronze | C93200 | No | 34800 | 16000 | 65 | 70% |
| Brass | C26000 | No | 46000-99000 | 14000 | 210 | 30% |
| Brass | C36000 | No | 4800-77000 | 16000 | 78 | 100% |
| Brass | C46400 | No | 55000 - 88000 | 14500 | 82 | 30% |
| Bronze | C31400 | Yes | 40000-60000 | N/A | 56-59 | 80% |
| Carbon Steel | A36 | Yes | 80000 | N/A | 119-159 | 72% |
| Copper | C11000 | No | 25000-29000 | 11000-17000 | 82-92 | 60% |
| Copper | C14500 | No | 47900 | 13000 | 60-130 | 85% |
| Phosphor Bronze | C54400 | No | 47000-100000 | N/A | N/A | 80% |
| Silicon Aluminum Bronze | C64200 | No | 75000-102000 | 50000 | N/A | 60% |
| Stainless Steel | 15-5PH | Yes | 115000-190000 | 95000-160000 | 255-388 | 45% |
| Stainless Steel | 17-4PH | Yes | 115000-190000 | 75000-90000 | 255-388 | 45% |
| Stainless Steel | 17-7PH | Yes | 170000 | 42000 | 180 | 75% |
| Stainless Steel | 303 | Yes | 87000-100000 | 33000-52000 | 170-210 | 75% |
| Stainless Steel | 304 | Yes | 84000-170000 | 30000-63000 | 170-360 | 40% |
| Stainless Steel | 304L | Yes | 78000-170000 | 25000-62000 | 160-350 | 40% |
| Stainless Steel | 316 | Yes | 76000-170000 | 30000-63000 | 160-360 | 36% |
| Stainless Steel | 316L | Yes | 77000-170000 | 25000-65000 | 170-350 | 36% |
| Stainless Steel | 321 | Yes | 85000-10000 | 32000-40000 | 170-210 | 36% |
| Stainless Steel | 347 | Yes | 89000-100000 | 32000-40000 | 160-201 | 36% |
| Stainless Steel | 410 | Yes | 76000-110000 | 28000-50000 | 190-240 | 54% |
| Stainless Steel | 416 | Yes | 75000-120000 | 33000-50000 | 230-320 | 50% |
| Stainless Steel | 420 | Yes | 100000-250000 | 33000-97000 | 190 | 50% |
| Stainless Steel | 420F | Yes | 110000 | 39000 | 230 | 68% |
| Stainless Steel | 430 | Yes | 75000 | 45000 | 160 | 66% |
| Stainless Steel | 430F | Yes | 79800 | 30000 | 170 | 75% |
| Stainless Steel | 440C | Yes | 100000-290000 | 38000-120000 | 222 | 40% |
| Steel | 1018 | Yes | 63000-70000 | 26000-38000 | 130-140 | 78% |
| Steel | 1045 | Yes | 90000-98000 | 33000-53000 | 180-190 | 57% |
| Steel | 1215 | Yes | 78300 | N/A | 167 | 136% |
| Steel | 4140 | Yes | 100000-160000 | N/A | 200-310 | 66% |
| Steel | 11L17 | Yes | 86300 | N/A | 179 | 9% |
| Steel | 12L14 | Yes | 78300 | 28000-41000 | 163 | 198% |
| Titanium | 6AL-4V | Yes | 131000 | 74000 | 334 | 22% |
| Titanium | 6AL-4V ELI | Yes | 125000 | 20300 | 326 | 22% |
| Titanium | 3Al 2.5 | No | 89900 | 24700 | 256 | N/A |
How Turning Differs from Milling and Boring
Turning: The term turning is a machining process where machines such as lathes remove parts of a rotating workpiece with a cutting device. For this process to work, the workpiece must be attached to a turning machine that rotates it while the cutting tool remains static and is used to scrape unwanted material – thus creating the desired shape.
Milling: Unlike turning, milling is a machining process whereby a machine (in this case, a milling machine) uses a rotating cutting tool to remove material from a static workpiece. Both milling and turning operate using the same principle – a cutting tool pressing against an object and scraping material from it. However, the difference between these two machining processes is in their use of rotation. While the workpiece rotates in turning operations, the cutting tool rotates in milling operations.
CNC Lathe Milling Options Available:
3-Axis Lathe – In 3-axis CNC milling, the workpiece remains motionless while the cutting tool mills along three different axes. 3-Axis milling machine applications include contoured shapes, hole features and sharp edges.
4-Axis Lathe – With 4-axis CNC milling, the CNC machine operates on multiple axes, with an additional rotation around one of the axes. This additional rotation is called the A-axis. It is used to create cut-outs on the side of a workpiece.
9-Axis Lathe – The 9-axis CNC machine is similar in basic capabilities to the 5-axis machine but also includes angle milling, balance turning and more. 9-axis machines use both the B-axis and additional tools to create complex parts.
Boring: Like turning, boring is another machining process involving a stationary non-rotating cutting tool to remove parts of a workpiece. However, the difference between these two machining procedures is that the cutting tool removes material inside the workpiece in boring. In other words, boring involves drilling holes in objects using a cutting tool that looks like a drill bit. While turning operations can only be carried out with a lathe, boring operations can be done using a lathe, boring milling machine, or a conventional milling machine.
The table below shows the main differences between turning, milling, and boring.
| Turning | Milling | Boring |
|---|---|---|
| Removes external materials from a workpiece using a cutting tool | Removes external material from a workpiece using a cutting tool | Removes material from the internal component of a workpiece (drilling holes inside objects) |
| The workpieces rotates while the cutting tool remains static | The cutting tool rotates while the workpiece is stationery | The workpiece rotates while the cutting tool remains stationery |
| Can only be done with a lathe | Done using a milling machine | Can be done with either a lathe or a milling machine |
CNC Swiss Machine vs. CNC Ganesh Machine
CNC Swiss machines and CNC Ganesh machines are similar in that they can both handle similar types of turned parts production. They can hold a larger number of tools and are great for making smaller precision parts. The difference is in how the machines hold the materials. With a CNC Ganesh machine, you can make smaller diameter parts that you can’t make on a CNC lathe machine.
CNC Machining Machines, Part Sizes and Precision Tolerances
Here are the machines / CNC lathes we use to turn parts:
| Machine Type | Machining Method | XYZ Machining Limits | Precision / Repeatability (in.) | Axis | Brand / Description | Machine Type | Machining Method | XYZ Machining Limits | Precision / Repeatability (in.) | Axis | Brand / Description |
|---|---|---|---|---|---|
| Mill-Turn | CNC Multi-Axis | Bar capacity: 2.6" - Main Spindle Std Chuck: 6" Main Spindle Max Chuck: 8″ - Max turning diameter: 21.25" Max turning length: 40.15" | ±0.00008 | 9-Axis | Doosan |
| Mill-Turn | CNC Multi-Axis | Bar capacity: 2.6" - Chuck capacity: 8" - Swing: 9.1" Max turning diameter 9" - Max turning length: 27.4" | X & Z-axis: ±0.00008 Y-axis: ±0.00012 C-axis: ±0.006° | 8-Axis | Doosan |
| Mill-Turn | CNC Multi-Axis | Bar Capacity: 2.6" - Chuck capacity: 8" - Swing: 21.6" Max turning diameter: 13" - Max turning length: 20.1" | X & Z-axis: ±0.00008 Y-axis: ±0.00012 C-axis: ±0.006° | Y-Axis | Daewooo |
| Turning | CNC Lathe | Bar capacity: 2" - Chuck capacity: 6.5" - Swing: 20" Max turning diameter: 9.8" - Max turning length: 20" | X & Z-axis: ±0.00008 C-axis: ±0.006° | Daewooo | |
| Turning | Manual Lathe | Chuck capacities: 8" / 10" - Spindle Bore: 2" - Max Swing: 16" Swing-over Gap: 24" - Dist Between Centers: 40" | N/A | - | Acra-Turn |
| Turning | Manual Lathe | Chuck capacities: 6" / 8" - Max Swing: 13" Swing-over Gap: 18.75" - Dist Between Centers: 40" | N/A | - | Atrump |
| Turning | CNC Lathe | Bar capacity: 2.6" - Chuck capacity: 8" - Max Swing: 26.6" Max turning diameter: 14.76" - Max turning length: 21.28" | Positioning accuracy: ±0.0002 Repeatability: ±0.0001 | 3-axis | Mazak |
| Turning | CNC Lathe | Bar capacity: 2.0" - Chuck capacity: 8" - Max Swing: 10" Max turning diameter: 12" - Max turning length: 18.8" | Positioning accuracy: ±0.0002 Repeatability: ±0.0001 | 3-axis | Hurco |
| Turning | Manual Lathe | ±0.005 | - | Hardinge | |
| Turning | Manual Lathe | ±0.005 | - | Enco | |
| Turning | Manual Lathe | N/A | ±0.005 | - | Hardinge |
| Turning | CNC Lathe | Bar capacity: 2.36" - Chuck capacity: 8" - Max Swing: 18" Max turning diameter: 14" - Max turning length: 40" | ±.00018 | - | Trak Lathe |
Custom Turning Options
With any turning project, there may be customizations that are requested or required. Here are a few elements that create a more custom turned part scenario.
Shapes – Sometimes, the turning process is used on a workpiece to create a particular shape. The overall shape of the end part, created according to the manufacturer’s needs, will dictate how custom the job will be and the overall cost of the turned part.
Grooves – Grooving is a turning operation that forms narrow cavities (grooves) of specific depth on the external or internal surface of the workpiece. It is a machining process carried out with a CNC lathe. However, the shape of grooves is dependent on the cutting tool shape. Not all turned parts require grooves. When they are required, they can increase the custom nature of the job.
Holes – Hole-making is the process of using machines to create cavities (holes) in a workpiece. It is a material removal process that requires a machine, cutting tool, and workpiece. Hole-making can be done with a variety of machines, such as CNC milling or CNC turning machines. However, specialized equipment such as drill presses or tapping machines can be used for hole-making. In such situations, additional tooling may be necessary, creating a custom turned part situation.
1 | Prototek
205 Pine St.
Contoocook, NH 03229
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Prototek
244 Burnham Intervale Rd.
Contoocook, NH 03229
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2 | ProtoCAM, A Prototek Company
6620 Grant Way
Allentown, PA 18106
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3 | Midwest Prototyping, a Prototek Company
10949 Blackhawk Dr
Blue Mounds, WI 53517
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4 | Prototype Solutions Group, a Prototek Company
1621 Indianhead Drive
Menomonie, WI 54751
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5 | Midwest Prototyping, a Prototek Company
1100 W 120th Ave #100
Westminster, CO 80234
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6 | Sac EDM, a Prototek Company
11341 Sunrise Park Dr.
Rancho Cordova, CA 95742
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7 | Prototek
215 Devcon Dr.
San Jose, CA 95112
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Frequently Asked Questions
Are you a broker or a manufacturer?
We are a full service sheet metal and machining manufacturer with four U.S. production facilities across the nation allowing us to deliver your high-quality parts FAST.
Does PROTOTEK manufacture in higher-volume quantities?
We focus on prototypes to low-volume production and can do larger runs. All our parts, from one – to 100 – to 1,000+ are always delivered with production-quality finish.
What are your payment terms?
PROTOTEK offers Net 30 payment terms for established customers with good credit.
What file formats are required or suggested for requesting a quote?
We accept .STP, .DWG, .IGS, .PDF, Parasolid files, and more.
What if I need help with my part design?
Our estimators are on hand to discuss your specific job needs. Our expert team can help you move your project smoothly through the design process and on to delivery.
If I do not have a CAD model, can you quote/fabricate my parts?
Yes, we can work directly from your drawings. Additional engineering charge (NRC) may apply depending on complexity.
How do I submit my NDA and other document requests?
Submit your NDA, Approved Vendor and other document requests to your sales rep or estimator.
How long is a quote valid?
Our quotes stand firm for 7 days from the date of issue.
How fast can I get my order?
Lead time for standard orders is 10 business days. Expediting options are available, including emergency service – down to as fast as 1-2 business days, depending on complexity of work and materials.
