Metal finishing Q&As since 1989
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Questions about military finishing spec. MIL-STD-171?
Q. I'm trying to find out what 1.1.2.3 or 1.9.2.3 of MIL-STD-171 is?
Marvin ElliottCost estimator - Pompano, Florida
November 6, 2008
A. Go to the assist quicksearch website at http://assist.daps.dla.mil/quicksearch/
You should find the spec there. I think the latest revision is revision E.
Aerospace - Yeovil, Somerset, UK
November 12, 2008
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Ed. note: That site seems to move every year or two. Current location as of Feb. 2017 is https://quicksearch.dla.mil/, and current version is F.
November 13, 2008
A. TABLE II. Inorganic finishes, metallic coatings.
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1.1 Cadmium coatings
1.1.2 Plating, w-P-416, type II, with supplementary chromate treatment; normal color: not bleached or clear (see 5.1.3.3)
1.1.2.3 Class 3, 0.0002 inch (5.1 um) thick
1.9 Zinc coatings
1.9.2 Electrodeposited zinc, ASTM B633, type II with supplementary chromate treatment; normal color: not bleached or clear (see 5.1.3.3)
1.9.2.3 Class 3, 0.0002 inch (5.1 um) thick
Luke Engineering & Mfg. Co. Inc.
Wadsworth, Ohio
Q. Good morning ,
I wonder if anyone knows what protective finish 7.3.1 of ?
Materials are alum. alloy 5052 H32 .090 thk.
Thanks for your advise in advance!
Owner and operator - Kingston, New York, USA
January 26, 2012
Hi, Rebecca.
I'm not sure that I understood the question, but Finish No. 7.3.1 is "Chemical film, chromate, MIL-DTL-5541
[on DLA] or ASTM B449
Type II, Class 1A, for maximum protection against corrosion, painted or unpainted".
Regards,
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
January 26, 2012
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