MIL-STD-130N
w/Change 1
TABLE II. Marking methods - Continued.
(This table is a guide. These suggested methods may not meet the needs of your application.)
Marking Methods |
Mark Characteristic |
HRI |
1D |
2D |
Recommended Use |
Rubber stamp, ink jet (with pre-encoded stencils) |
Surface mark |
y |
y |
y |
Non-metallic labels, fabrics, wood, plastics. On metal parts with protective finish (i.e., phosphate) cover with clear lacquer. Apply before oiling. Also temporary marking; work in progress. |
Decalcomania |
y |
y |
y |
Instructional plates, part identification, when other methods are not available, temporary marking, protect with clear lacquer. Apply before oiling. |
|
Metal or plastic tags |
y |
y |
y |
When other methods are not available. |
|
Photo anodizing |
y |
y |
y |
Name plates, foil plates, placards, etc. ref. GG-P-455 for severe applications. |
|
Thermal spray (combustion, electric arc, HVOF, plasma) |
y |
y |
y |
All metals and composites. Raised cells. All surface finishes. Requires abrasive blast. Can tailor the applied materials. Works well when painted over. |
|
Metal paste through a pre-encoded stencil |
y |
y |
y |
Apply specified metal paste through pre- encoded stencils. The stencil is removed and the metal paste is fused to the substrate via heat treat cycle, induction, laser, or torch. Pre- blast required. |
|
Epoxy applied through a pre- encoded stencil |
y |
N |
N |
Epoxy is applied through a stencil and the stencil may or may not be removed for contrast. Requires a pre-blast. Good for all materials. Performs well under paint if the stencil is removed. |
|
Pre-encoded inserts (materials are in contrast to the part) |
y |
y |
y |
Composites new build or retrofit. For new build, the pre encoded inserts are placed tool or bag side preferably under fiberglass and cured in. Use epoxy and vacuum bag for retrofit. |
|
Digitally printed |
Subsurface mark |
y |
y |
y |
Labels, tags & plates. |
NOTES:
1. Potential effects on the item to be marked should be weighed in selecting the marking method.
2. The Joint Marking Qualification Working Group (JMQWG), under the sponsorship of the Government Electronics and Information Association, provides a common set of IUID 2D Data Matrix symbol mark qualification test and report data available for unrestricted use at https://acc.dau.mil/CommunityBrowser.aspx?id=30743. Refer to (https://rsesc.uah.edu/DPM) for JMQWG Matrix details. The goal of this venture is to coordinate a consortium approach towards performing, publishing, and sharing non-proprietary information for the following areas:
a. IUID marking methods (dot peen, laser/chemical etch, direct ink, label, etc.). b. Material types and finishes (80% common to most of Industry).
c. Environmental criteria (80% common to most of Industry or use worst case).
3. NASA-STD-6002 also provides an overview of DPM methods and practices.
4. For HRI, 1D, and 2D, Y (recommended) and N (not recommended) denotes protocol implementation consideration.
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