Industry
Invar Machining for Scientific Instruments, Labs and Accelerator Facilities
From university sample stages to accelerator alignment fixtures, we match your Invar, Kovar or Alloy 42 RFQ with up to three vetted machine shops. We are a matching service, not a machine shop, and every shop quotes and deals with you directly.
Why Scientific Instruments & Research Labs programs specify these alloys
Research and instrument hardware asks a mount, a fixture or a bench to hold its position through a temperature swing that would be irrelevant on a general mechanical part but directly corrupts an alignment, a wavelength calibration or a beamline survey. Invar 36 and Super Invar reduce that thermal contribution at the material level, before any active compensation or re-survey is applied.
This buyer group ranges from a single postdoc ordering one custom fixture on a grant-funded purchase order to an accelerator facility ordering dozens of identical alignment plates for a beamline upgrade, and from an instrument manufacturer running a production line to a beamline group specifying leak-tight vacuum hardware. Each has different quantity, documentation and timeline realities, covered in our guides below.
Where Scientific Instruments & Research Labs uses Invar, Kovar and Alloy 42
Accelerator and beamline alignment
Magnet mounting plates, fiducial fixtures and reference structures that hold survey position between re-alignments.
Spectrometers and analytical instruments
Grating mounts, monochromator arms and detector rails where thermal drift shows up as calibration error.
Vacuum chambers and beamline hardware
Flanges, bellows interfaces and internal mounts that must seal reliably and hold position through bakeout cycles.
Custom research instrument fixtures
One-off or low-quantity parts for university and national lab instruments, often from informal drawings.
What to put on the RFQ, and what to vet in a supplier
We match your RFQ. You still own supplier qualification. These lines get you a comparable quote and a shop that can answer the qualification questions your program asks.
State the alloy and its ASTM spec explicitly, not just "Invar" or "low expansion metal".
Flag which dimensions or features are actually alignment- or calibration-critical.
Give your real operating temperature range and, for vacuum hardware, the bakeout profile.
State quantity now and expected quantity over the life of the program or facility.
Note any export control, NDA or facility security requirement upfront.
Give your real need date and the reason for it (beamtime, grant deadline, production schedule).
Scientific Instruments & Research Labs guides
- Materials
Invar Parts for Particle Accelerators and Beamlines
Why accelerator facilities specify Invar 36 and Super Invar for magnet mounts and alignment fixtures, and how beamline scale changes the machining and sourcing conversation.
- Materials
Invar Machining for Spectrometer and Analytical Instrument Manufacturers
Why spectrometer and analytical instrument makers specify Invar 36 for grating mounts and optical benches, how thermal drift becomes calibration error and what to put on the RFQ.
- Choosing a Supplier
Sourcing Custom Invar Parts for Research Lab Instruments
How university and national lab procurement differs from industrial buying, why research drawings are often informal, and how to write an RFQ that still gets a useful Invar quote.
- Process
Invar Vacuum Chamber and Beamline Component Machining
Machining practice for Invar flanges, bellows interfaces and mounting hardware in beamline vacuum systems: seal-face finish, leak-tight technique and bakeout dimensional stability.
- Materials
Machining Invar for Cryogenic and Vacuum Applications
How Invar 36 behaves at cryogenic temperature and in vacuum service, and what that means for machined tolerances, cleaning and outgassing on parts destined for those environments.
- Materials
Invar for Optical Benches and Telescope Structures: Why CTE Stability Matters
Why optical and telescope designers specify Invar 36 or Super Invar for mounts and structural benches, and what that means for how the parts are machined.
- Choosing a Supplier
Second-Source Qualification: Requalifying an Invar Part at a New Shop
What changes when you move an existing Invar part to a second machine shop: process differences to check, first article comparison and what to document.
Alloy pages: Invar 36 machining, Super Invar machining, Kovar machining, Alloy 42 machining. Spec numbers and CTE by temperature band on the Invar specs reference.
Have a drawing ready?
Send the short version now. We will ask for anything missing. For full details up front use the full RFQ form. Reply within 24 business hours.
Your files go only to the shops we match. Ask for an NDA and nothing is shared until it is signed.
Questions from Scientific Instruments & Research Labs buyers
Something else? Email .
Do you manufacture Invar parts for labs or accelerator facilities?
No. We are a matching service. You send an RFQ with your drawing, and we connect it with up to three vetted shops that machine these alloys. The shops quote and deal with you directly.
Are your matched shops certified for aerospace, nuclear or national lab work?
We do not hold or claim any certification ourselves. If your program requires ISO 9001, AS9100, a security clearance or a specific qualification, state it on the RFQ and we prioritize shops that can show it, but verify any certification directly with the shop, not with us.
We only need one custom part for a university lab instrument. Is that a normal request?
Yes. Single-part and low-quantity orders are common in this category. Expect the quote to reflect one-off setup cost rather than a production per-part price.
Can a shop quote from an informal sketch instead of a formal drawing?
Often yes, if the RFQ fills the gaps in words: material spec, which dimensions matter, tolerance intent and quantity. See our research lab custom machining guide for how to write that RFQ.
How is this different from your aerospace or semiconductor equipment coverage?
Those pages cover flight structures and fab-floor metrology equipment. This one covers accelerator, beamline, spectrometer and general research-instrument hardware, a distinct buyer group with its own quantity and procurement patterns.