Four aerospace part marking systems
AS9132 lists both dot peen and laser as approved processes. HeatSign builds both, so the recommendation depends on the alloy and the drawing — not on which one we happen to sell.
Aerospace · Aluminum · Titanium · Steel · Copper · Composites
Aerospace Part Marking Machines
A readable code is not always an accepted code. Aerospace part marking is judged on code geometry, not on whether a scanner reads it. HeatSign sets each machine for your alloy and the grade your customer asks for.
Desktop Fiber Laser · 20W / 30W / 50W
The workhorse for aluminum and steel
$1950 ~ $5000
This covers most of the volume: aluminum alloys, stainless steel, coated parts and nameplates. A fixed table, a repeatable focus and no consumables. If your parts come to a bench and they are aluminum or steel, start here.
Marking area 110 × 110 mm, larger on request
Air cooled | Data Matrix, serials and text from one file
Air cooled | Data Matrix, serials and text from one file
Aluminum alloys . Stainless . Nameplates . Brackets . Fasteners
HS-FL100M · MOPA Fiber Laser · 100W
For titanium, Inconel and thin sections
$3500 ~ $6000
Titanium and nickel superalloys are used where fatigue matters most, and heat is what causes microcracks around a mark. A MOPA laser engraver lets you shorten the pulse, which keeps contrast high while putting far less heat into the part.
Adjustable pulse | Smaller heat-affected zone
High contrast on titanium, Inconel and copper alloys
High contrast on titanium, Inconel and copper alloys
Titanium . Inconel . Turbine parts . Copper alloys . Thin walls
UV Laser Marker · 355nm · 5W / 10W
For composites, polymers and boards
$3,000 – $5,900
A 355nm beam marks with light rather than heat, so a carbon-fibre panel does not delaminate and a connector body does not melt. This is what interior parts, harness components and boards need.
Line width to 0.01 mm | Cold marking, no heat damage
CFRP, polymers, PCB, glass | No scorching at the code edge
CFRP, polymers, PCB, glass | No scorching at the code edge
Composites . Interior parts . Connectors . PCB . Harnesses
HS-PE01-P · Pneumatic Dot Peen Marking Machine
For large parts and marks that get coated
$1800 – $2500
AS9132 lists dot peening as an approved process, and it is still the right answer where the part is too large to move or gets painted afterwards. A laser mark disappears under a coating; a dot peen mark does not.
Carried to the part | Marking area 140 × 60 mm
Built-in touchscreen, no PC | Depth survives paint and primer
Built-in touchscreen, no PC | Depth survives paint and primer
Landing gear. Structural parts . Pre-paint . Large castings
Four alloys, four settings, one standard. The code has to hold the same geometry on every one of them.
Aerospace laser marking, material by material
Every part on an aircraft carries a part number and a serial number. What changes between them is the alloy, and each alloy behaves differently under the beam.
Two codes on one aluminum part
A fiber laser puts both codes on the same part from one file, in one setup.
Aluminum is where most aerospace marking happens, and it is the easiest alloy to get a clean, high-contrast code on.
Material | How the mark comes out | Machine |
|---|---|---|
Aluminum alloys2024, 6061, 7075 | Aluminum marking for the aerospace industry gives a grey to dark mark. Anodized parts take a white or black code with very high contrast. | |
Titanium and Inconel | High contrast without cutting deep. Heat control matters most here, because these alloys go into fatigue-critical parts. | |
Stainless and alloy steel | Aerospace steel marking can be done by heating the surface until it turns black, without cutting into it. The metal stays sealed, so it does not start to rust at the mark. | |
Copper and CuNiconnectors, bus bars, tubing | Aerospace copper marking is the hardest of the metals. Copper reflects most of the beam and carries heat away before a mark forms. | |
CompositesCFRP, GFRP, honeycomb skins | A cold beam removes the surface resin without heating the fibres underneath, so the laminate does not delaminate. | |
Polymers and interiors | Light on dark or dark on light, with no melted edge. Cabin panels, ducting, connector bodies and placards. |
What actually gets marked
Part group
Examples
What goes on it
Engine and turbine
ExamplesBlades, vanes, discs, rotors, flanges, nozzles
What goes on itSerial · part number · heat lot · Data Matrix
Airframe and structure
ExamplesLanding gear, brake discs, ribs, spars, thrust reversers
What goes on itPart number · serial · build standard
Fasteners and small parts
ExamplesBolts, nuts, rivets, bushings, washers
What goes on itLot code · manufacturer code · tiny 2D code
Systems and electrical
ExamplesPumps, actuators, connectors, boxes, harnesses
What goes on itSerial · part number · UID code
Interior and cabin
ExamplesPanels, ducting, trim, placards, monuments
What goes on itPart number · material code · flammability data
Tooling and GSE
ExamplesJigs, fixtures, hand tools, ground equipment
What goes on itTool serial · calibration ID · owner code
Which standard applies to your parts
Aerospace has more marking standards than any other industry, and which one binds you depends on who you supply, not on what you make.
Standard
Who it applies to
What it controls
SAE AS9132EN 9132 · SJAC 9132
Who it applies toAnyone marking a Data Matrix on a metallic aerospace part
What it controlsDot size, cell spacing, distortion angle and contrast — the geometry the code must hold
MIL-STD-130
Who it applies toUS defence and military aerospace suppliers
What it controlsUnique item identification, ECC 200 Data Matrix, what data the code carries
ATA Spec 2000A4A
Who it applies toAirline supply chain and spares
What it controlsHow parts are identified and tracked across the commercial aviation supply chain
EASA Part 21 Subpart Q
Who it applies toEuropean design and production organisations
What it controlsIdentification of parts and appliances produced under approval
SAE AS478
Who it applies toUS commercial aviation
What it controlsApproved methods for identification marking of parts
NASA PRC-9003
Who it applies toNASA and space hardware suppliers
What it controls⚠ Where a mark may be placed — low-stress areas only, to avoid fatigue crack initiation
OEM specificationsRolls-Royce JES / RRES and equivalents
Who it applies toSuppliers to a specific engine or airframe maker
What it controlsUsually stricter than the general standard it references
Read this as a map, not as advice. Your customer’s drawing and their supplier manual are what bind you, and they are usually stricter than the standard they refer to.
Send HeatSign the marking requirements and we will say which machine meets it. For the geometry rules in detail — fill ratio, dot centre offset, cell size — see the AS9132 compliance guide. For the supply-chain side, see Spec 2000 explained.
Where aerospace DPM marking goes wrong
Four things that get a batch rejected, and none of them is about whether the mark is readable.
Low stress: Only where the drawing allows
The drawing: Not the flattest surface
What HeatSign does
Ask for the marking zone before recommending a machine, so the working area and the head reach match what the drawing permits.
Short pulse: Less heat into the part
MOPA: Lets you set the pulse
What HeatSign does
Recommend MOPA where titanium and Inconel are the main materials, and set the parameters for contrast with the shortest pulse that gets there.
Geometry: Not just readability
Every batch: Worn parts drift the result
What HeatSign does
Set the machine against your required grade rather than against a demo string, and tell you which surface finishes will and will not reach it.
355 nm: Cold marking, UV
Resin only: Fibres left untouched
What HeatSign does
Use UV for composites and polymers rather than turning a fiber laser down, because low power on the wrong wavelength still puts heat in.
How to choose an aerospace part marking machine
Three questions. The drawing answers the first one for you.
Question 1
What grade does your customer ask for?
A higher grade needs a better surface, not more power. Ask before you buy.
Question 2
What is the part made of?
Aluminum or steel → fiber laser marking machine.
Titanium or Inconel → MOPA laser engraver.
Composite or polymer → UV laser marker.
Question 3
Does it get coated afterwards?
Yes → dot peen engraver, for depth.
No → a laser marker gives a finer code.
We will tell you when the cheaper machine is enough. A MOPA is the right answer for titanium work. If everything you mark is aluminum brackets, it is money you do not need to spend.
Questions about aerospace part marking
Does the machine itself need to be AS9132 certified?
No, and this is the most common misunderstanding. AS9132 is a specification for the mark, not a certification for the equipment. There is no such thing as an AS9132-certified marking machine.
What matters is whether the marks your machine makes pass verification on your parts, with your surface finish. A supplier who says their machine is certified to AS9132 is describing something that does not exist.
Do we need a verifier as well as a scanner?
For aerospace, usually yes. A scanner tells you the code reads. A verifier measures it against the standard and prints a report, which is what an audit or a first article submission asks for.
They are different devices and the verifier costs more. Budget for it separately from the marking machine.
Can we mark parts that are already in service?
Can we mark parts that are already in service?
Yes. Repair shops do it every day — a new serial after an overhaul, or the repair station’s own code.
The part usually cannot be moved to a bench, so you carry a portable machine to the part instead. Same job file, same result.
One thing to check first: mark only where the repair manual says you can. A used part has already been through years of load, so a mark in the wrong spot matters more than it would on a new part.
How often do we have to check the settings?
Every batch, not every week.
Three things change slowly without anyone noticing: the lens gets dirty, the dot peen pin wears down, and a new delivery of metal has a slightly different surface.
Each one makes the code a little worse. Check the first part of every batch, and you find the problem on one part instead of on five hundred.
Do we have to buy a different machine for each material?
Usually two. One fiber laser covers aluminum, steel and titanium, which is most of the volume in an aerospace shop.
The second machine depends on what else you make. Composites and cabin plastics need UV. Large parts that get painted afterwards need dot peen.
Tell us what percentage of your work is which, and we will say whether one machine is enough or where the second one should go.
What do you supply for a first article inspection?
The machine specification, the parameter set saved for your part, and marked samples with photographs. That covers the equipment side of the file.
The parts that describe your process rather than our machine — capability studies, control plan entries, operator training records — have to come from your own quality system.
How much does an aerospace part marking machine cost?
Portable fiber lasers are $1,950 to $3,800, the pneumatic dot peen $2,000 to $3,000, UV lasers $3,000 to $5,000 and the MOPA $4,300 to $6,800. Desktop fiber is priced on configuration.
Tell us the alloy, the code your customer specifies and roughly how many parts a day, and you will have a price the same working day.