Standard Finish Summary

The following summary is brief description Lyn-Tron's standard finish summary. The document is organized with the Lyn-Tron's Plate Code proceeded by the standard Lyn-Tron plating name and a brief explanation of the finish. The Lyn-Tron Plate Code is represented as numeric/alphanumeric value and is between two and three characters long. The plate code will always be listed at the end of the Lyn-Tron part number.

Please click on the finish name link below to review the suggested material that the selected finish can be applied to.

Anodize

• Acid Electrolyte treatment which penetrates the metal and builds up
• Rough-etched appearance, hard oxide surface
• Applied on aluminum
• Excellent corrosion and abrasion resistance
• Non-conductive



• Lyn-Tron Plate Codes

Plate Id	Description	Type/Class	Plate Specs
08	Clear Chromic Acid Anodize
09	Red Anodize	Type II Class 2	MIL-A-8625 Rev F
10	True Green Anodize	Type II Class 2	MIL-A-8625 Rev F
101	Blue Anodize	Type II Class 2	MIL-A-8625 Rev F
102	Gold Anodize	Type II Class 2	MIL-A-8625 Rev F
103	Violet Anodize	Type II Class 2	MIL-A-8625 Rev F
104	Pink Anodize	Type II Class 2	MIL-A-8625 Rev F
105	Orange Anodize	Type II Class 2	MIL-A-8625 Rev F
11	Dark Grey Anodize	Type I	Chromic 0.5?-7.6?
111	Dark Grey Anodize	Type II	Sulfuric 1.8?-25.4?|| Mil-A-8625 Rev F
12	Clear Anodize	Type II Class 1	MIL-A-8625 Rev F
121	Hard Clear Anodize	Type III Class 1	MIL-A-8625 Rev F
14	Black Anodize	Type II Class 2	MIL-A-8625 Rev F
141	Hard Black Anodize	Type III Class 2	MIL-A-8625 Rev F
15	Clear Semi-Frost Anodize	Type II	MIL-A-8625 Rev F
16	Black Semi-Frost Anodize	Type II	MIL-A-8625 Rev F
17	Clear Satin Anodize	Type II	MIL-A-8625 Rev F
18	Black Satin Anodize	Type II	MIL-A-8625 Rev F
19	Black Bright Anodize	Type II	MIL-A-8625 Rev F
20	Clear Bright Anodize	Type II	MIL-A-8625 Rev F

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Bright Dip

• An Acid bath etching process
• Used on brass parts
• Process removes any metal particulate that may be on the part



• Lyn-Tron Plate Codes

Plate Id	Description	Type/Class	Plate Specs
03	Bright Dip		ASTM B 281
04	Hot Dip Galvanize		ASTM A153C

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Cadmium

• Cadmium can be electroplated on most metals
• It is commonly used on brass and steel
• Appearance is typically bright
• Lyn-Tron offers a type II with a supplementary chromate treatment
• Cadmium offers excellent corrosion protection
• It offers excellent protection in marine environments
• Should not be exposed to continuous temperatures of over 150 degrees F.
• Non magnetic and cannot be soldered
• This plating has been used as a suitable alternative to E-nickel or zinc plating



• Lyn-Tron Plate Codes

Plate Id	Description	Type/Class	Plate Specs
31	Clear Cadmium	Type I Class 2	SAE-AMS QQ-P-416
311	Yellow Cadmium	Type II Class 3	SAE-AMS QQ-P-416 || .0002 Per Side
31H	Clear Cadmium Heat Treated		SAE-AMS QQ-P-416
32	Yellow Cadmium	Type II Class 2	SAE-AMS QQ-P-416
32H	Yellow Cadmium Heat Treated		SAE-AMS QQ-P-416

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Caustic Etched

• An acid bath process primarily used on aluminum
• Typically finished with an Anodized plate



• Lyn-Tron Plate Codes

Plate Id	Description	Type/Class	Plate Specs
02	Caustic Etch

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Chemical Film

• This process is used on RoHS aluminum
• Parts are dipped in a chemical
• Process makes no dimension changes in the part
• It offers good corrosion resistance and is electrically conductive
• Abrasion resistance is poor with this finish
• Common brand names are Iridite and Alodine.
• Lyn-Tron uses 14-2 Iridite. This finish is gold unless otherwise requested.



• Lyn-Tron Plate Codes

Plate Id	Description	Type/Class	Plate Specs
21	Clear Iridite	Class 3	MIL-DTL-5541F
211	Clear Iridite	Type 1 Class 3	MIL-DTL-5541F
22	Gold Iridite Class	1A	MIL-DTL-5541F
221	Gold Iridite Class 3
222	Gold Iridite - Honeywell Approved	Class 1A	MIL-DTL-5541 Rev F
223	Gold Iridite - Honeywell Approved	Class 3	M690278-2 MIL-C-5541 Rev F
24	Blue Iridite
25	Clear Iridite	Class 3 (RoHS)	MIL-DTL-5541F
25H	Clear Iridite	Class 3 (RoHS) with Heat Treat	MIL-DTL-5541F
25P	Clear Iridite	Class 3 (RoHS) with Nylon Patch	MIL-DTL-5541F
26	Gold Iridite Class 1A (RoHS)

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Chrome

• Chrom is a technique of electroplating a thin layer of chromium onto a metal object
• The chromed layer can be decorative, provide corrosion resistance, ease cleaning procedures, or increase surface hardness



• Lyn-Tron Plate Codes

Plate Id	Description	Type/Class	Plate Specs
71	Chrome	Bright
72	Chrome	Satin
73	Chrome/Electroless Nickel

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Copper / Nickel / Bright Tin

• Copper plating is primary used as an undercoat to improve adhesion and to prevent impurities forming on the base metal and migrating through.
• Can affect solderability.
• Can be done to most metals
• Offers only fair resistance to corrosion



• Lyn-Tron Plate Codes

Plate Id	Description	Type/Class	Plate Specs
48	Copper/Nickel/Bright Tin
48H	Copper/Nickel/Bright Tin + Heat Treated

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Electro Tin

• Electroplated tin provides very good resistance to corrosion.
• When applied to a proper thickness this finish meets a 24 hour 20% salt spray requirement.
• Can be soldered
• Is ductile
• Available either bright or dull finishes
• Bright tin looks cosmetically better then dull tin and has better corrosion resistance. When exposed to low temperatures (-40° F) this finish changes structure and loses adhesion.
• The expected shelf life of Electro Tin is approximately six months from the date plated. To ensure maximum shelf life -- parts should be sealed in an airtight container with desiccant.



• Lyn-Tron Plate Codes

Plate Id	Description	Type/Class	Plate Specs
42	Electro Tin - Dull	Type II	ASTM B 545-97 || Tin Matte .0002-.0003 || Copper Flash .0001 Min.
42H	Electro Tin - Dull Heat Treated	Type II	ASTM B 545-97 || Tin Matte .0002-.0003 || Copper Flash .0001 Min.
42R	Electro Tin with Red Wax		MIL-T-10727
43	Electro Tin - Bright	Type I	ASTM B 545-97 || Bright Tin .0002-.0005 || Copper Strike .0001 Min.
431	Electro Tin - Bright		.0001 CU flashing under plating with bright tin
43H	Electro Tin - Bright + Heat Treat	Type I	ASTM B 545-97 || Bright Tin .0002-.0005 || Copper Strike .0001
44	Electro Tin - Solder	AMS-P-81728A	Solder Tin-Lead .0002-.0005 || 60/40 Copper Flash || .0001 Per MIL-C-14550B Class 4
44H	Electro Tin - Solder	Heat Treat	Solder Tin-Lead .0002-.0005 || 60/40 Copper Flash || .0001 Per MIL-C-14550B Class 4
44R	Electro Tin	Solder	F50HD11(A) - EML Red Wax
4A	Electro Tin - Bright	.0002-.0004	Tin .00002 CU

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Finishing Process

• The finished product of finishing process



• Lyn-Tron Plate Codes

Plate Id	Description	Type/Class	Plate Specs
00	Unplated
00D	Unplated - 202 Thread Lock Dri Loc		IFI 125 / 525
00F	Nylon Strip (Fill)
00H	Heat Treat - Unplated
00M	Unplated -MCM
00P	Nylon Patch - Unplated
00Q	Nylon Pellet - Unplated
00S	Marking Stamp - Unplated
01D	Passivate - #202 Thread Lock Dri Loc		IFI 125 / 525
74	Brushed Aluminum
89	Electropolish	High Luster BRIGHT	HPS 124 Type 1
99	Rust Inhibitor
99T	Rust Inhibitor + Carburize .005-.010 to HRC 35-42

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Gold

• Gold plating is a method of depositing a thin layer of gold onto the surface of another metal, most often copper or silver, by chemical or electrochemical means
• Mechanical or chemical affixing of thin gold foils onto the surface of objects is instead known as gilding



• Lyn-Tron Plate Codes

Plate Id	Description	Type/Class	Plate Specs
94	Gold (.00005/.00007)		MIL-G-45204, CL 1, Type II
96	Gold (.00005 - .0000315) / Nickel Flash
97	Gold (.00002 Min)		MIL-G-45204, Type II
98	Hard Gold over Nickel with Copper Strike

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Nickel

• Nickel provides a silver finish and can be plated on most metals
• Offers very good resistance to corrosion
• Can deposited in either a soft or hard finish (dull or bright)
• Corrosion resistance is a function of plate thickness
• Some forms of this finish may be slightly magnetic.



• Lyn-Tron Plate Codes

Plate Id	Description	Type/Class	Plate Specs
61	Nickel		AMS-QQ-N-290 Rev B
61P	Nickel w/ Patch		AMS-QQ-N-290 Rev B
62	Black Nickel		NYSTAN Over .0001 Copper
63	Ductile Nickel - Class 1	Grade G	SAE-AMS-QQ-N-290 || Copper Flash MIL-C-14550 Class 4
634	Sulfamate Nickel	Type II Class 10	ASM B 687-97
63H	Ductile Nickel + Heat Treat	Class 1 - Grade G	SAE-AMS-QQ-N-290 || Copper Flash MIL-C-14550 Class 4
63P	Ductile Nickel with Nylon Patch	Class 1	SAE-AMS-QQ-N-290 || Copper Flash MIL-C-14550 Class 4
64	Nickel without Copper Under Plating		QQ-N-290 A .0002 Min.
65	Bright Nickel Over Copper Flash		AMS-QQ-N-290 Rev 3 || Copper Strike
66	Electroless Nickel		AMS-C-26074 Rev B
661	Nickel - Molex
66P	Electroless Nickel with Nylon Patch
81	Black Chrome/Chromium/Nickel

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Nylon Dye

• A dye can generally be described as a colored substance that has an affinity to the substrate to which it is being applied
• The dye is generally applied in an aqueous solution, and may require a mordant to improve the fastness of the dye on the fiber



• Lyn-Tron Plate Codes

Plate Id	Description	Type/Class	Plate Specs
83	Black Dye
84	Blue Dye
85	Red Dye
86	Green Dye
87	Grey Dye

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Oxide

• Finish is mostly decorative
• Has limited corrosion protection in mild conditions
• Dimensional changes are immeasurable.



• Lyn-Tron Plate Codes

Plate Id	Description	Type/Class	Plate Specs
50	Black Oxide	Steel	MIL-C-13924
50H	Black Oxide - Steel - Heat Treated	Class 1	MIL-C-13924
50P	Black Oxide - Steel with Nylon Patch	Class 1	MIL-C-13924
51	Black Oxide - Brass		MIL-F-495
51W	Black Oxide - Wax Coating	Brass	MIL-F-495
52	Black Oxide - Stainless Steel	Class 4	MIL-C-13924C
521	Black Oxide after Passivate	Stainless Steel
522	Black Oxide after Passivate with Heat Treat	SS
52W	Black Oxide - Wax Coating	Stainless Steel

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Passivate

• Chemical treatment used on Stainless Steel
• Process makes no dimension changes in the part
• Treatment removes iron particles and creates an etched passive surface. (Nitric acid -- dissolve's iron)
• Process purifies the surface and improves corrosions resistance.



• Lyn-Tron Plate Codes

Plate Id	Description	Type/Class	Plate Specs
01	Passivate		ASTM-A967-05
011	Passivate (Nitric)		ASTM-A967-05
012	Passivate with 96 Hour Salt Spray		MIL-F-14072-E300 / MIL-STD-202
013	Passivate IAW AMS2700		Method 1, Type 2 or 8
01E	Passivate with Electro Polish		ASTM-A967-05
01H	Passivate + Heat Treat		ASTM-A967-05
01M	Passivate - MCM
01P	Passivate with Nylon Patch		ASTM-A967-05
01Q	Passivate with Nylon Pellet		ASTM-A967-05
01S	Passivate with Marking Stamp		ASTM-A967-05
01Y	Passivate Honeywell Approved		14072-E300
06	Passivate	Type II	SAE-AMS QQ-P-35C

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Silver

• This is an expensive finish
• Provides excellent electrical conductivity
• Soft and solderable.



• Lyn-Tron Plate Codes

Plate Id	Description	Type/Class	Plate Specs
91	Silver		QQ-S-365 || .0001 Silver
92	Silver/Nickel		ASTM B700 QQ-S-365 || .0001 Silver / Nickel

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Zinc

• Corrosion resistant
• Conductive
• Inexpensive
• Can be applied in a wide range of thickness
• In time this finish will weather and turn to a drab gray color



• Lyn-Tron Plate Codes

Plate Id	Description	Type/Class	Plate Specs
33	Black Zinc	Type II SC1 0.0002	ASTM B633-98 || FE/ZN 5
34	Zinc Clear Chromate	Type III	ASTM-B633 Rev 7
341	Zinc Clear No Chromate	Type 1 Class 2	ASTM B 633 Type 1 SC2 .0003 Min
342	Zinc Clear Chromate	Type III	ASTM B 663 Type 3 SC3 .0005 Min.
343	Zinc Clear	Type3 SC3 (72hr salt)	ASTM B 633 Type 3 SC3 (72hr salt)
345	Zinc Clear	Type3 SC2 (bake after plate)	ASTM B 633 Type 3 SC2 (.0003 min.)
347	Zinc Clear	Type3 SC2 (96hr salt)	ASTM B 633 Type 3 SC2 (96hr salt)
34BP	Zinc Clear Nylon Patch - Blue - Type III		ASTM-B633 Rev 7
34H	Zinc Clear Heat Treated	Type III	ASTM-B633 Rev 7
34P	Zinc Clear Nylon Patch	Type III	ASTM-B633 Rev 7
35	Zinc Clear -No Chromate	Type i	ASTM-B633 Rev 7
35P	Zinc Clear with Nylon Patch	Type i	ASTM-B633 Rev 7
36	Zinc Yellow Chromate	Type II	ASTM-B633 Rev 7
363	Zinc Yellow Chromate	Type II SC3 (0.0005)	ASTM B663 Type 3 SC3
36H	Zinc Yellow Heat Treat	Type II	ASTM-B633 Rev 7
36P	Zinc Yellow Nylon Patch	Type II	ASTM-B633 Rev 7
37	Zinc Yellow (RoHS)		ASTM-B633 Rev 7
37P	Zinc Yellow (RoHS) Nylon Patch		ASTM-B633 Rev 7
37YP	Zinc Yellow (RoHS)		ASTM-B633 Rev 7
38	Black Zinc (RoHS)
53	Black Zinc/Copper
53P	Black Zinc/Copper Strike Nylon Patch
54	Black Zinc/Copper Strike (RoHS)
55	Nickel/Copper Strike( .0001) - Steel
56	Black Zinc/Nickel Strike
575	Magni - 575 Black		Special magni-575 process
80	Zinc Yellow Leach Back Bronze

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