Aerospace & Defense
MIL-STD-130 Electrochemical Marking for Aerospace Parts
Permanent, compliant, non-damaging marks for flight-critical components. IMG Electromark has supplied aerospace manufacturers with electrochemical marking systems since 1951. Our AC and DC units produce IUID-ready serial numbers, part IDs, and traceability marks on titanium, Inconel, stainless, and aluminum alloys without heat, stress, or distortion.
Why aerospace manufacturers use electrochemical marking
Aerospace parts require permanent identification that survives the life of the component without compromising structural integrity. Electrochemical marking hits all three: permanence, compliance, and zero mechanical stress on the part.
MIL-STD-130 ready
DC etching produces mark depths up to 0.010 inches, satisfying the permanence and legibility requirements for IUID and traceability marking under MIL-STD-130N. Use your own validated process to meet contract specifications.
No heat, no stress
The process is electrochemical, not mechanical or thermal. No heat-affected zone, no residual stress, no surface deformation. Safe for flight-critical titanium, Inconel, and thin-wall components where fatigue life matters.
Works on every aerospace alloy
Titanium (all grades), Inconel, Hastelloy, stainless steel, aluminum, tool steel, and nickel alloys. Each paired with a matched electrolyte so the mark reads clean and consistent from part one to part ten thousand.
Standards and compliance
Aerospace and defense marking is governed by a stack of overlapping standards. Electrochemical marking is one of the permanent marking methods recognized across them. The shop is responsible for validating their specific process against the contract or program requirements, but the foundation is in place.
MIL-STD-130N
Department of Defense standard for Item Unique Identification (IUID) marking. Governs permanent marking of DoD-controlled items. Electrochemical etching is an accepted permanent marking method when the mark meets depth, contrast, and durability requirements.
AS9100
Quality management standard for the aerospace industry. Requires part traceability from raw material through delivery. Permanent serial and lot marks on parts support AS9100 traceability requirements.
MIL-STD-792
Identification marking requirements for special purpose components. Covers permanent and temporary surface marking of components, component parts, and piping. Electrochemical etching is an accepted permanent marking method for the conductive metal parts under this standard.
IUID and NSN
For National Stock Number (NSN) marking and IUID data matrix codes, DC etching provides the legibility and machine-readability needed for downstream scanning and serialization.
Typical aerospace applications
- •Serial numbers and part IDs on airframe components, brackets, fittings, and machined parts.
- •Lot and batch traceability marks for AS9100 compliance across raw material, WIP, and finished goods.
- •IUID data matrix codes for DoD-controlled items requiring machine-readable unique identification.
- •NSN markings for components entering the federal supply chain.
- •Turbine and engine components in titanium, Inconel, and Hastelloy where thermal processes are not acceptable.
- •Fasteners, bolts, and hardware requiring permanent identification without compromising fatigue life.
- •Tooling, fixtures, and ground support equipment used in aerospace manufacturing and MRO.
Recommended equipment for aerospace shops
Most aerospace applications benefit from a dual-output AC/DC marking unit. DC for deep permanent etches that satisfy MIL-STD-130 and IUID requirements. AC for surface-level legibility marks, logos, and inspection stamps. One machine, both modes, switchable from the front panel.
Marking Units
AC, DC, and dual-output units sized for bench-top and production use. Talk to our team about which model fits your part mix and volume.
Electrolytes & Cleaners
Formulations matched to aerospace alloys including titanium, Inconel, stainless, and aluminum. Neutralyte for post-mark cleaning.
Stencils
Custom stencils for serial numbers, data matrix codes, logos, and part identifiers. Standard and reusable options available.
Bench Markers
Production-rate bench marking configurations for shops running high-volume serial or lot marking.
Aerospace marking FAQs
Is electrochemical marking MIL-STD-130 compliant?
Yes. Electrochemical marking is one of the permanent marking methods accepted under MIL-STD-130N for Item Unique Identification (IUID) and traceability marking, provided the mark meets the standard's requirements for depth, contrast, legibility, and durability. DC electrochemical etching produces a mark depth of up to 0.010 inches, which satisfies the permanence requirements for most aerospace applications. Operators are responsible for validating their specific process, electrolyte, and stencil configuration against the contract requirements.
What aerospace metals can be electrochemically marked?
Electrochemical marking works on all conductive aerospace alloys, including titanium (Grade 2, Grade 5, and other grades), Inconel 600, 625, and 718, Hastelloy, stainless steel (300 and 400 series, 17-4 PH, 15-5 PH), aluminum alloys (2024, 6061, 7075), tool steel, and nickel alloys. Each metal requires a matched electrolyte formulation to produce a clean, high-contrast mark. IMG supplies electrolytes specific to aerospace alloys and will test customer-supplied samples when the alloy is unusual.
AC or DC marking for aerospace parts?
AC marking produces a dark surface oxide mark ideal for legibility and branding. DC marking produces a deeper etch of up to 0.010 inches by removing metal rather than oxidizing the surface. For MIL-STD-130 IUID marking and traceability marks that must survive surface finishing, DC marking is generally preferred. Many aerospace shops choose a dual AC/DC unit so they can mark both surface-level IDs and deeper permanent serials from one machine.
Does electrochemical marking weaken aerospace parts?
No. Electrochemical marking is a cold process that does not introduce mechanical stress, heat-affected zones, or metal distortion. Unlike dot peen or stamping, it does not deform the part. Unlike laser marking, it does not create a heat-affected zone that can serve as a fatigue initiation site. For flight-critical components where surface integrity matters, electrochemical marking is one of the safest permanent marking methods available.
Ready to mark aerospace parts the right way?
Tell us what you are marking and we will recommend the right unit, electrolyte, and stencil configuration. American-made equipment since 1951, backed by phone and video support at no charge for the life of the machine.