EUmark Set 01 – Electrochemical Etch Marking Kit, Black Oxide and Deep Etch

EUmark Set 01 — complete etch marking kit, black oxide and deep etch

Most parts that need a permanent identity also need it applied without changing anything else. Stamping deforms. Rotary engraving removes load-bearing material. Laser marking puts energy into the surface that has to be justified on fatigue-critical and corrosion-critical hardware, and brings an enclosure and a safety program with it.

Electrochemical etch marking solves the problem from a different direction. A low-voltage current carries an electrolyte through a stencil into the part and converts the surface chemistry in the open pattern. Nothing melts, nothing is displaced, nothing is cut away.

What makes Set 01 different from the compact sets

Set 01 is built on the full marking unit, which runs both marking modes:

• Black oxide marking — shallow, high-contrast dark mark. What most identification work calls for.
• Deep etch, light marking — a recessed mark with real depth, for identification that has to stay legible through further finishing, handling or a service life of abrasion and cleaning.

The compact sets — 05, 06 and 07 — produce black marking only. If a drawing calls out etch depth rather than contrast alone, or if the mark has to survive media blasting, tumbling or years of wear, the full machine is what covers it. Set 01 is the least expensive way to get it.

What Set 01 does not include

There is no stencil printer in this kit. You mark with long-life photo stencils, which we produce from your artwork and which run up to 5,000 marks each.

That is the right arrangement when the marking content repeats — a maker’s mark, a company logo, a fixed part identifier, a certification mark. It is the wrong arrangement when every part carries a different number.

If you want to print your own stencils on this same full machine, Set 02 and Set 03 are the direct step up — same machine, same deep etch capability, with a P58D printer added. If your marking content needs sequential serial numbers, QR codes or barcodes rather than just printed text, SUPER SET 04 is the configuration built for that — a wider printer and the software that generates the numbers.

A stencil printer can also be added later on its own; it is sold separately and works with this machine.

Marking specifications customers bring us

• MIL-STD-130 — identification marking of US military property, where chemical etch appears among the accepted permanent methods for metal items
• SAE AS9132 — data matrix quality requirements for parts marking, where acceptance rests on contrast and cell fill rather than on the marking technology
• FDA UDI direct marking, 21 CFR 801.45 — reusable devices reprocessed between patients, where the identifier must outlast the cleaning and sterilization life of the instrument
• AS9100 / ISO 13485 traceability — part and lot identification inside your quality system

Straight answer on certification: the equipment does not hold one, and no marking equipment does. Compliance attaches to the marked part and to your qualification of the process that produced it. What this kit gives you is a short variable list — current mode, dwell time, electrolyte, felt saturation, stencil condition — which makes that qualification quick to write and easy to hold.

What the process does to the part

Property	Effect	Why it matters
Heat input	none	No HAZ to disposition on heat-treated or age-hardened alloys
Recast layer	none	No micro-cracking initiation site on cyclically loaded parts
Residual stress	none added	Fatigue allowables unchanged; no shot peen rework triggered
Material removal	~0.001″ surface conversion	Safe on thin wall sections and finished dimensions
Burrs and raised edges	none	No deburr operation after marking; nothing to snag on sealing faces
Hardness and temper	unchanged	Marking happens last, on the finished part
Corrosion resistance	preserved	Neutralize with N11, then passivate to your existing procedure

Kit contents

• EUmark marking unit, 110 V / 220 V, with power and marking cables
• Hand stamp (marking head)
• Marking felt
• Electrolytes M21, M22, M23 and N11 Neutralyte
• Sample long-life stencil
• Sample printed stencil

The four fluids, and why they are the part of this kit that matters most

Marking units are broadly similar across the industry. Electrolytes are not, and they are where the result actually comes from.

Fluid	How it behaves	Reach for it when
M21	Self-cleaning. Gets a high number of marks out of one wetting of the felt.	Running a batch. The operator is not stopping to re-wet or wash the felt between parts — which is where the real cycle time in manual marking gets lost.
M22	Very dark mark, and the fluid used for deep etch. Requires the felt to be washed after use.	Maximum contrast, or a print calling for etch depth rather than surface contrast alone.
M23	Non-corrosive, formulated for marking highly corrosion-sensitive materials. Wipe the surface with a dry cloth after marking — that is the whole post-process.	Corrosion-critical hardware, or any part where a wet neutralizing step is impractical.
N11 Neutralyte	Protects the marked surface after etching.	Standard finishing step after M21 or M22.

Read this before you order: the table is a recommendation, not a specification. Alloy, condition, finish and prior processing all change the outcome, so trial marking on your own material is a required step, not a nice-to-have. Send a coupon and we will run the first trial for you.

Formulation and safety data sheets

The strongest argument for these fluids is not the mark. It is that they are formulated to the requirements applied in medical, aerospace and food-contact manufacturing, and that every fluid ships with a safety data sheet. Quality and EHS functions need those sheets for incoming inspection, hazard communication and the audit file. In a regulated shop an undocumented consumable does not get approved for the floor no matter how well it performs — which is precisely why shops replacing an unbranded electrolyte end up here. A 200 ml bottle delivers up to 20,000 marks.

Specifications

Method	Electrochemical etch marking, AC and DC
Marking modes	Black oxide marking and deep etch
Input	110 V / 220 V AC — ships ready for US, EU and UK mains, no conversion needed
Output voltage	10–15 V
Max output current	15 A
Power consumption	up to 150 W peak
Protection	Fuse plus thermal fuse
Marking cycle	2–5 seconds per mark
Full cycle per part	approx. 10 seconds — mark, wipe, load the next part
Indicative throughput	about 6 parts per minute at a steady rate
Mark depth	approx. 0.001″ (0.025 mm) marking mode; deeper in etch mode, dwell dependent
Alloys	Any conductive metal — 300 and 400 series stainless, tool steel, carbon steel, aluminum, titanium, brass, chrome plate
Part geometry	Flat, round, ID and OD, concave, convex, hollow, assembled
Photo stencil service life	up to 5,000 marks
Marking unit footprint	6.3″ × 6.3″ × 2.6″ (160 × 160 × 65 mm)
Expected service life	10+ years in normal shop use
Warranty	2 years
Built by	EUmark, Serbia — in production since 1999

Stencils and artwork

Send artwork as a vector file — SVG, DXF, AI or EPS — and we will produce a long-life photo stencil from it.

What reproduces well and what does not. Thin lines, outlined text and open lettering mark cleanly. Thick strokes and large solid black areas should be avoided: the electrolyte does not pass evenly through them and the mark comes out patchy. Where a logo is heavy, an outlined version of it marks far better than a filled one. Strokes below about 0.008″ (0.2 mm) tend to close up. Send us the file with the part finish before you commit to a stencil and we will tell you what will hold.

Qualifying it in your shop

1. Mark coupons in your production alloy across a dwell time range, in both modes.
2. Verify contrast, depth and legibility against your acceptance criteria.
3. Neutralize with N11, passivate to your existing procedure, then run your standard corrosion check on the marked coupon.
4. Record the accepted parameter window in the work instruction and set a stencil replacement interval.

We supply marked sample coupons in your own material on request, so the first-article conversation happens before the purchase order rather than after it.

Questions we get

Can I mark hardened and age-hardened parts?

Yes, and that is the main reason customers move to this process. There is no thermal or mechanical input, so hardness, temper, geometry and fatigue life are unaffected. Marking is performed on the finished, final-inspected part.

What is the difference between this and the compact sets?

The machine. Set 01 runs black oxide marking and deep etch; the compact sets 05, 06 and 07 run black marking only. If you will never need depth, a compact set costs less. If you might, buying the compact machine first and the full machine later costs more than buying this one now.

Does marking affect corrosion resistance on stainless?

Not when the marked area is neutralized with N11 and passivated along with the rest of the part under your existing procedure. Confirm it once on a coupon during qualification and record the result.

Can it be used in the field or at a customer site?

Yes. The unit measures 6.3 by 6.3 by 2.6 inches and needs only a bench and a wall outlet. MRO and field service customers use it for replacement part identification and repair tagging.

Where does it ship from, and what will landed cost be?

Orders dispatch from Serbia and ship worldwide. Duties, tariffs and import handling vary by destination and change often. Tell us the delivery country before you order and we will provide the tariff classification, the shipping method and a landed cost estimate in writing.

Before you buy

Send the alloy, part geometry, mark content and annual volume, and we will confirm the right configuration — including telling you if a compact set covers it.