Aerospace Capabilities
We work on the cusp of innovation and technology to deliver quality parts to our customers around the world. From startups to Fortune 500 companies, Gretna works with some of the world’s most respected companies, including Boeing, Lockheed Martin, Honeywell, NASA and Oceaneering. Using the latest industry tools and equipment to meet and exceed required tolerances, we provide 100 percent quality assurance.
Key Procurement Designation
Client Portfolio
NASA
Machining Centers
CNC Lathes
Distance Between Centers 20.0″ – 123.8″
Max. Turning Length 16.5″ – 120.0″
Max. Turning Dia. 15.7″ – 35.4″
Spindle Bore Dia. 2.1″ – 12.0″
CNC Mills
X 30.0″ – 60.63″
Y 16.0″ – 29.92″
Z 20.0″ – 29.92″
A Full 4th Axis
Full 5th Axis Capabilities, including vertical lathe
High Speed Machining up to 15,000 rpm
Inspection Equipment
Hexagon CMM Machine
Tesa Mircrohite Plus M900 36”
Height Gage
12” Comparator with digital read out
Gagemaker MIC trac MT-3000
Black granite surface plate 36” x 48” x 6“
Hardness Tester
Material
A286
Aluminum grades
MP35N
Titanium
Stainless Steels
Forgings
Inconel
Waspalloy (machined 3D printed parts)
Alum Bronze
Brass Bronze
Material Alloys
- Carbon and alloy steel (4130, 4140 thru 4145, 4340, 1018 thru 1026, 8620)
- Casing
- Cast iron
- Aluminum alloy (2011, 2024, 6061, 7075)
- Bronze and copper alloys
- Stainless steel (13-8, 17-4, 300 series, 410)
- 420 Modified, 13% Chromium, 9% Chromium, “Super” 13% Chrome
- Nickel alloys (Inconel – 925, 718, 625, K-50 Monel)
- Inconel
- Titanium alloys
- Monel
Programming
At Gretna, our CNC programmers are Class A machinists. This ensures that every drawing given by the customer is meticulously programmed by a person who has experience as a machinist. Furthermore, they also have the role of shop supervisors, which means that they are available to support the machine operators who may have questions during the setup or machining process. This cross training allows work to flow seamlessly from the customers’ print to the production floor.
Inspection
Eliminating waste in the planning phase of a production process has an obviously beneficial impact on long-term profitability. Gretna’s inspectors have a combined 40 years’ experience of ensuring maximum efficiency, low cost and less waste, and they utilize state-of-the-art equipment, including a CMM, in a climate-controlled inspection room while adhering to a strict calibration schedule for quality assurance and control. Our inspection team gives top priority to ensuring quality is built into the production process by preventing or removing waste and recall issues.