SAE AS 478P:2017 pdf free download – ldentification Marking Methods

SAE AS 478P:2017 pdf free download – ldentification Marking Methods.
A pigmented film bearing the required identification applied by transfer from a suitable backing to the item. When dried, it is recommended that the film be coated with a clear lacquer or polyurethane topcoat, air dried; the marking shall be legible after coating.
4.1.12 Plate
A data or nameplate bearing the required identification marking is securely affixed to the item.
4.1.13 Band
A band bearing the required identification marking is permanently attached to the item,
4.1.14 Pressure Sensitive Label
An environment resisting label bearing the required identification, bacced with pressure sensitive adhesive, is applied 10 the item.
4.1,15 Laser
Characters are produced by displacing material with a laser beam, Depth is controlled by varying the pulse rate of the beam. the speed of advance, the focus, and the power.
4.1.15.1 Dot Matrix Mode
Characters are formed by a series of dot-like depressions in the material.
4.1.15.2 Engrave Mode
Characters are formed by a continuous depression in the material.
4.1.16 Plastic Laminate
On laid-up plastic parts, the identification marking may be applied with ink or paint and then covered by a layer of the same resin used in the underlying laminate. Altomatively, the identification may be marked on a separate piece of fabric or paper which is bonded to the substrate with resin and then covered with resin. The ink or paint and the fabric or paper shall withstand the cure cycle, if applicable The ink or paint and the resin shall have good adhesion to the composite substrate. shall be compatible with each other, shall withstand the cure cycle II applicable, and be compatible with the service environment of the part. The marking shall be legible through the cured resin.
4.2 Temporary Marking
Temporary marking shall not adversely affect the function or serviceability of the item. On items subØct to intense heat, any temporary marking method which leaves a heavy carbon deposit or sufficient detrimental residue such as copper, zinc. etc., should be avoided or, when used, should be removed before subec1ion to Intense heat.
NOTE: The use of any know carcinogenic material; e.g., lead, cadmium, etc.. is strictly prohibited.
4.2.1 Ink
Characters are produced by applying an ink by any means which does not injure the surface. When a final marking is applied to a painted surface by ink stamping, it is recommended that the marking be coated with a clear lacquer or polyurethane topcoat, air dried; the marking shall be legible after coating.
6.1 General Prachce
To specify marking methods in aocordance with this standard, the marking requirements note shall contain the specific data to be marked and AS478 followed by all acceptable marking methods. Marking methods may include any specific 1st tier. 2nd tier, or 3rd tier method, any class of methods (as designated in Table 1), and any supplemental OCR Font Designator if applicable (as designated in Table 2), or any combination of such methods. OCR Font Designators shall be included for all methods to which they apply. Unless otherwise specified on the part drawing or other procurement document, all included methods or class of methods in a marking note are considered equally acceptable It is recommended that each additional method or class be preceded by the word OR In the marking note (or alternatively, a comma). See example In 6.1 .ld.
6.1.1 General Practice Example Notes (see Tables 1 and 2)
a. MARK PART NUMBER PER AS4782C1 (Specifies marking by metal stamp, roll, shallow only.)
b. MARK PART AND SERIAL NUMBER PER AS478 CLASS H – (Specifies marking by any method in Column H.)
c. MARK MATERIAL CODE PER AS478•2C1 OR CLASS E ‘(Specifies marking by method 2C1 or any of the methods in Column E.)
d. MARK MATERIAL. CODE PER AS478-4 OR -50 OR -15A3 OR CLASS K – (Specifies marking by any method under 1st tier method 4 or any method under 2nd tier method 5D or method 15A3 or any method in Column K.)
e. MARK PART NUMBER PER AS478-7A1 OCR-A09 OR 15B1 OCR-A09 – (Spectfies marking by intermediate electrochemical etch or shallow laser engrave mode with opucaly recognized character fonts.)
6.2 1st Tier Methods
When a marking method number in the first tier of Table 1 is specified, any of its subordinate methods listed in the second and third tiers may be used.
6.2.1 1st Tier Methods Example Note
a. MARK PART NUMBER PER AS478•2 (Permits marking by any of its second•tier subordinates 2A, 28. 2C, 2D, 2E. 2F. or any of its third tier subordinates 2A1 through 2F3.)
6.3 2nd Tier Methods
When a marking method number In the second tier of Table 1 is specified, any of its subordinates In the third tier may be used.
6.3.1 2nd Tier Methods Example Note
a. MARK PART NUMBER PER AS478-2C – (Permits marking by methods 2C1 or 2C2.)
6.4 3rd Tier Methods When a marking method in the Third tier of Table I is specified. only that method is allowed.
6.4.1 3rd Tier Methods Example Note.