Experienced Aerospace Machine Shop
Aerospace
For Aerospace Parts Requiring Ultra-Precision Accuracy
Precision matters in aerospace. Whether for rockets, satellites or spacecraft, even the smallest flaw can lead to catastrophic failure. Koham Industries machines precision aerospace components built to meet and exceed strict tolerances.
Call on Koham for parts other shops can’t produce. From prototype to production, Our team brings the experience, equipment and commitment needed to machine mission-critical parts with confidence.
What is Aerospace CNC Machining?
Aerospace CNC machining is the creation of parts used in assembling and maintaining rockets, satellites, aircraft and space shuttles. CNC-machined components, kits and assemblies are often necessary for aircraft in the aerospace industry. Koham uses high-quality materials, including Titanium, Kovar and more, to manufacture custom aerospace parts with lasting performance.
Koham’ Aerospace Expertise
Our engineers exceed industry standards with advanced machining solutions for aerospace. Whether you need 5-axis CNC machining, micromachining, plunge/sink EDM or additive manufacturing, Koham delivers precision components built to exacting tolerances.
When other machine shops say no, Koham takes the call. We work closely with your team to produce high-accuracy parts made from challenging materials. Backed by decades of experience and the industry’s best equipment, we solve complex machining challenges others can’t.
NASA & GM Partner with Koham for Aerospace CNC Machining Services
The Robonaut, a robot arm designed in partnership by NASA and GM, required a bicep assembly part. This was a unique request since this robot arm would have to be fully functional while working on the moon.
There was no room for errors in this part’s machining. This robot arm would have to fit perfectly with other parts once assembled, offering the mobility required for uses, construction and exploratory tasks deemed unsafe and/or unrealistic for humans. Owens’ machinists designed and created a fully functional bicep assembly part to the exact NASA required specifications. NASA was so pleased with our work, they commissioned two more bicep assemblies.
Work with Koham
Contact our aerospace machine shop today to discuss your component designs.
Robotic Bicep Assembly
Get a 360-degree view of this part and learn more about its development.
Materials
Mill Turn Machining Materials Trusted by Koham Industries
Koham Industries supports a wide range of mill turn machining materials for demanding industries and complex part requirements. Our team selects materials based on strength, machinability, corrosion resistance, heat resistance, wear performance and final application needs. Koham Industries has extensive experience manufacturing mill-turned parts from materials such as:
Alloy Steel
Alloy steels include additional elements beyond carbon, which improve their hardness, toughness, and resistance to fatigue and wear. These steels are widely used in construction, automotive, and machinery due to their enhanced properties.
| Alloy Steel | UNS Designation | DIN Designation | ISO Designation |
|---|---|---|---|
| 4140 | 1.7225 | 708M40 | 42CrMo4 |
| 4340 | 1.6565 | 817M40 | 40NiCrMo6 |
| 8620 | 1.6523 | 805M20 | 20NiCrMo2 |
| 52100 | 1.3505 | 100Cr6 | SUJ2 |
| 4142 | 1.7227 | 708M40T | 41CrMoS4 |
| 6150 | 1.8159 | 735A51 | 50CrV4 |
Inconel
Inconel is a strong, corrosion-resistant nickel alloy, ideal for challenging aerospace applications. It can withstand extreme temperatures and pressures, making it suitable for jet engines and gas turbines.
| Inconel | UNS Designation | DIN Designation | Alternative Designation |
|---|---|---|---|
| 718 | UNS N07718 | 2.4668 | NiCr19Fe19Nb5Mo3 |
| 625 | UNS N06625 | 2.4856 | NiCr22Mo9Nb |
| 600 | UNS N06600 | 2.4816 | NiCr15Fe |
| X-750 | UNS N07750 | 2.4669 | NiCr15Fe7TiAl |
| 601 | UNS N06601 | 2.4851 | NiCr23Fe |
| 725 | UNS N07725 | 2.4668 | NiCr19Fe19Nb5Mo3 |
Invar
Invar is a nickel alloy with very low thermal expansion, making it highly stable and perfect for precision applications such as instrumentation and aerostructure molds. It is also used in scientific instruments where dimensional stability is critical.
| Invar | UNS Designation | DIN Designation | Alternative Designation |
|---|---|---|---|
| 36 | UNS K93600 | 1.3912 | FeNi36 |
| 42 | UNS K94200 | 1.3917 | FeNi42 |
| 48 | UNS K94800 | 1.3922 | FeNi48 |
| 32-5 | UNS K94610 | 1.3911 | FeNi32-5 |
| 42-6 | UNS K94620 | 1.3913 | FeNi42-6 |
| 46 | UNS K94630 | 1.3914 | FeNi46 |
Titanium
Titanium is a lightweight metal with excellent strength, low thermal expansion, and high corrosion resistance. Its ability to be sterilized and its biocompatibility make it unique, especially in medical implants and aerospace components.
| Titanium Grade | UNS Designation | DIN Designation | Alternative Designation |
|---|---|---|---|
| 5 (Ti-6Al-4V) | UNS R56400 | 3.7165 | Ti-6Al-4V |
| 2 | UNS R50400 | 3.7035 | CP Titanium |
| 23 (Ti-6Al-4V ELI) | UNS R56401 | 3.7165 | Ti-6Al-4V ELI |
| 9 (Ti-3Al-2.5V) | UNS R56320 | 3.7195 | Ti-3Al-2.5V |
| 7 (Ti-0.2Pd) | UNS R52400 | 3.7235 | Ti-0.2Pd |
| 12 (Ti-0.3Mo-0.8Ni) | UNS R53400 | 3.7105 | Ti-0.3Mo-0.8Ni |
Brass
Brass is a metal known for its easy machinability and good electrical conductivity. It is ideal for applications requiring low friction, such as gears, locks, and musical instruments.
| Brass | UNS Designation | DIN Designation | Alternative Designation |
|---|---|---|---|
| C36000 | UNS C36000 | CUZN39PB3 | CuZn39Pb3 |
| C46400 | UNS C46400 | CuZn38Al | Naval Brass |
| C93200 | UNS C93200 | Saems 660 | Bearing Bronze |
| C48500 | UNS C48500 | CuZn39Sn1 | Leaded Muntz Metal |
| C26000 | UNS C26000 | CUZN30 | Cartridge Brass |
| C37700 | UNS C37700 | CUZN40PB2 | Forging Brass |
Copper
Copper is excellent at conducting heat and electricity, making it perfect for electrical uses like busbars and wire connectors. It is easily recognized by its shiny reddish-orange color and is also used in plumbing and roofing.
| Copper | UNS Designation | DIN Designation | Alternative Designation |
|---|---|---|---|
| C11000 | UNS C11000 | Cu-ETP | Electrolytic Tough Pitch (ETP) Copper |
| C10100 | UNS C10100 | OF-OK | Oxygen-Free Electronic (OFE) Copper |
| C10200 | UNS C10200 | OF-Cu | Oxygen-Free (OF) Copper |
| C28000 | UNS C28000 | CuZn40 | Muntz Metal |
| C14500 | UNS C14500 | TeCu | Tellurium Copper |
Stainless Steel
Stainless steel is known for its strength, heat, and corrosion resistance, along with its durability and attractive appearance. These qualities make it suitable for a wide range of uses, including kitchenware, medical instruments, and construction.
| Stainless Steel | UNS Designation | DIN Designation | Alternative Designation |
|---|---|---|---|
| 316L | UNS S31603 | X2CrNiMo17-12-2 | Stainless Steel 316L |
| 304 | UNS S30400 | X5CrNi18-10 | Stainless Steel 304 |
| 17-4 PH | UNS S17400 | X5CrNiCuNb16-4 | Stainless Steel 17-4 PH |
| 303 | UNS S30300 | X8CrNiS18-9 | Stainless Steel 303 |
| 420 | UNS S42000 | X20Cr13 | Stainless Steel 420 |
| 440C | UNS S44004 | X105CrMo17 | Stainless Steel 440C |
Tool Steel
Tool steels are hard, stiff, and resistant to abrasion, making them perfect for manufacturing industrial tools. Their robustness is essential for cutting, drilling, and molding applications in various industries.
| Tool Steel | UNS Designation | DIN Designation | Alternative Designation |
|---|---|---|---|
| D2 | UNS T30402 | 1.2379 | X155CrVMo12-1 |
| M2 | UNS T11302 | 1.3343 | HS6-5-2C |
| A2 | UNS T30102 | 1.2363 | X100CrMoV5-1 |
| S7 | UNS T41907 | 1.2355 | 50CrMoV13-15 |
| O1 | UNS T31501 | 1.2510 | 100MnCrW4 |
| H13 | UNS T20813 | 1.2344 | X40Cr |
Aluminum
Aluminum alloys are lightweight and strong, with excellent thermal and electrical conductivity. They are also resistant to corrosion and can be anodized for added protection, making them ideal for aerospace and packaging industries.
| Aluminum Alloy | UNS Designation | DIN Designation | ISO Designation |
|---|---|---|---|
| 7075-T651 | 3.4365 | 76528 | AlZn5.5MgCu |
| 6082-T651 | 3.2315 | 64430 | AlSi1MgMn |
| 6060 | 3.3206 | EN AW-6060 | AlMgSi |
| 5052 | EN AW-5052 | 3.3523 | AlMg2,5 |
| 2017A | 3.1325 | 24530 | AlCu4MgSi |
Hastelloy
Hastelloy is a group of nickel alloys known for their high resistance to corrosion, pitting, and stress-corrosion cracking. They are often used in harsh environments like chemical processing and aerospace, where durability is crucial.
| Hastelloy | UNS Designation | DIN Designation | Alternative Designation |
|---|---|---|---|
| C276 | UNS N10276 | 2.4819 | NiMo16Cr15W |
| C22 | UNS N06022 | 2.4602 | NiCr21Mo14W |
| B-2 | UNS N10665 | 2.4617 | NiMo28 |
| X | UNS N06002 | 2.4665 | NiCr22Fe18Mo |
| C2000 | UNS N06200 | 2.4675 | NiCr23Mo16Cu |
| G-30 | UNS N06030 | 2.4603 | NiCr29Mo9Fe |
Maraging Steel
Maraging steels are ultra-high-strength steels that are easy to machine and weld without causing distortion. They gain their exceptional hardness and toughness from a special heat-treating process, making them suitable for aerospace and tooling applications.
| Maraging Steel | UNS Designation | DIN Designation | Alternative Designation |
|---|---|---|---|
| 200 | UNS K93120 | 1.6359 | 20Ni Maraging Steel C200 |
| 250 | UNS K92890 | 1.6358 | 18Ni Maraging Steel C250 |
| 300 | UNS K93120 | 1.6354 | 18Ni Maraging Steel C300 |
| 350 | UNS K93160 | 1.6356 | 18Ni Maraging Steel C350 |
| 400 | UNS K91460 | 1.6352 | Custom 465 Stainless |
| 500 | UNS K92810 | 1.6354 | Custom Age 625 Plus |
Get Your Aerospace Project Off the Ground
Trust our industry-leading capabilities in precision CNC milling, micromachining, EDM, Lathe work and more for small parts critical to getting large aerospace projects off the ground. We work with respected names throughout the aerospace industry, including HEICO, SNC, JPL, AMTEK, Honeywell and Parker. Contact our aerospace manufacturing company today for precision-fabricated components.
Aerospace Machining Tolerances & Capabilities
| Machining Service | 5-Axis Machining | EDM Machining | Mill-Turn Machining | CNC Lathes/Turning | Metal 3D Printed Parts |
|---|---|---|---|---|---|
| Maximum Part size | 28″ x 24″ x 15″ | 13.5″ x 21.5″ | 14″ dia x 16″ oal | 10″ dia x 10″ oal | 28″ x 24″ x 15″ |
| Standard Lead Time | 12 weeks | 12 weeks | 12 weeks | 10 weeks | 12 weeks |
| General Tolerances | .001″ | .0005″ | .0025″ | .0025″ | .001″ |
| Precision Tolerances | .0001″ | .00005″ | .0005″ | .00025″ | .0001″ |
| Minimum Feature Size | 250 x .250 x .250 | .01 x .01 x .01 | .060″ dia x .050″ oal | .060″ dia x .050″ oal | .250 x .250 x .250 |
| Minimum Surface Finish | 8 | 8 | 8 | 8 | 8 |
| Standard Surface Finish | 64 | 32 | 32 | 32 | 32 |
*Standard delivery dependent on workloads. Call Koham for current lead times.
Common Aerospace Applications
We have several capabilities within our manufacturing services catered to the aerospace industry. Here are a few applications we frequently see.
- Heat exchangers
- Manifolds
- Turbo pumps
- Jigs & fixtures
- Drones
- Liquid and gas flow components
- Fuel nozzles
- Conformal cooling channels
- Surrogate parts
- Small sensors
Precision Machine Shop Produces OEM Parts for Astronautic Engineering Firms
As the aerospace industry continues to grow, aeronautical engineers are developing commercial, military and private aircraft capable of flying higher and faster. At the same time, astronautic engineers are pushing for greater precision in spacecraft and satellite components, driving increased demand for ultra-precise machined parts. Manufacturers rely on OEM parts built to the tightest tolerances to support complex subsystems in satellite platforms, propulsion systems and structural spacecraft components.
Since 2013, Koham Industries has advanced alongside the aerospace sector. Our temperature- and contaminant-controlled CNC facility produces high-end OEM components for the most demanding aerospace applications. Aerospace never stops moving forward, and neither do we. No matter the complexity, our skilled team has the tools and experience to get it done.
Components We Build for the Aerospace Industry
| Part | Application | Machining Process Used | Material | Specific Feature |
|---|---|---|---|---|
| Valve Seat | Air Flow Regulator | Mill/Turn | 347 Stainless Steel | Diameters held within 0.0005″ Concentricities |
| Control Valve Housing | Aircraft Brake | 4-Axis Milling | 2024-T351 Aluminum | MIL-Spec Ports and Internal Features |
| Check Valve | Brake Fluid Flow Control | Precision Turning | 18-8 Stainless Steel Cond B | 32 Microfinish on all Surfaces |
| Piston | Engine Valve | Conventional CNC Turning | 7075-T651 Aluminum | Maintaining Class 1 Diameter Fit Tolerance |
| Hinge, Convergent Flap | Flap Control | 3-Axis Milling | Inconel 718 | Deep Groove Milling |
| Housing, Aileron | Flap Control | 5-Axis Milling | 15-5PH Cond H1025 | Machining Finned Housing from Solid Billet Stock |
| Battery Core | Safety Equipment | Swiss Screw Machine | 6061-T6 Aluminum | Black Anodized Sleeve |
| Machined Reflector | Wing Lights | 5 Axis Profile Milling | 6061-T6 Aluminum | Milling and Polishing 16 Reflective Pockets |
| Cylinder Assembly | Flow Channel for Booster Rocket | Turning with Ceramic Inserts | A286 Alloy | Deep Drilling Through Interrupted Surfaces |
| Thruster Body | Satellite Propulsion | Precision EDM | 6Al-4v Grade 5 Titanium | EDM Nozzle Micro Taper Vectored Thru-Hole |
| DM Cover | Satellite Component | Mill/Turn | 6061-T651 Aluminum | Turn, Mill, and Drill Flanged Cover |
| Grid Clamp | Satellite Component | CNC Turn | AISI 304 Stainless Steel | Turn 0.044″ Thick Ring |
Contact Koham today for ultra-precision aerospace components made to your specifications.
View our Success Gallery to see our work!