Mil Spec Anodizing So Cal

[OneApart]

Hey everyone,

I have a few parts that I need anodized to: MIL-A-8625F Type III Spec (Hardcoat) and have found a place that can do it for a flat rate of $99 in West Inland Empire.

Does anyone here need anything anodized to the type III spec that would like to share the cost so we can get a really good price? (The shop owner mentioned that he would do 10-15 uppers/lowers for that price).

If you are interested shoot me a PM, I would like to get it done within the next couple of weekends.

Thanks everyone!!

[Woodymyster]

Read my mine!
PM sent

[OneApart]

PM replied... it is in the works. If we can get more people, than we can get our parts anodized for $20 each or less!!

[audihenry]

Some photos of the anodizing, esp close up ones? How is this different from a "normal" anodizing in practical terms?

[OneApart]

Some photos of the anodizing, esp close up ones? How is this different from a "normal" anodizing in practical terms?

I do not have any photos as I have not brought any parts to have anodized yet (hence this thread).

If I understand correctly, Type III Mil Spec anodizing is a "Hardcoat" which is more durable & heat resistant vs. various other methods used. They recommended that this be done on 7570 grade aluminum.

I will post pictures once my parts are completed (either this weekend or next).

I'm sure there are others here that are more knowledgeable than I am about the subject... hopefully they will chime in .

[Woodymyster]

Type 3 anodizing builds a hardened layer over the aluminium piece about .002 inches thick. It is the best wear resistant finish applied to aluminium receivers and hardens the receiver to almost a toughness found in steel. During the process, a dye is applied which also gives the receiver its black appearance. Most receivers have this done already, and would need to be stripped to bare metal if done again.

The purpose of this thread is to apply a finish to 80% receiver builds which are bare metal.

[OneApart]

Type 3 anodizing builds a hardened layer over the aluminium piece about .002 inches thick. It is the best wear resistant finish applied to aluminium receivers and hardens the receiver to almost a toughness found in steel. During the process, a dye is applied which also gives the receiver its black appearance. Most receivers have this done already, and would need to be stripped to bare metal if done again.

The purpose of this thread is to apply a finish to 80% receiver builds which are bare metal.

There you have it.

[sv_1]

As I understand a true hard coat anodizing is difficult to dye deep black as the pore structure doesn't allow penetration and many "hard anodized" parts are not truly hard anodized.

Please post up the pics and your overall experience. Its good to know people who will work with our 80% lowers

[audihenry]

Wanted to find out more, this is what Wikipedia had to say:

The oldest anodizing process uses chromic acid. In North America it is known as Type I because it is so designated by the MIL-A-8625 standard, but it is also covered by AMS 2470 and MIL-A-8625 Type IB. Chromic acid produces thinner, 0.5 μm to 18 μm (0.00002" to 0.0007") more opaque films that are softer, ductile, and to a degree self-healing. They are harder to dye and may be applied as a pretreatment before painting.

Coatings of moderate thickness 1.8 μm to 25 μm (0.00007" to 0.001") are known as Type II in North America, as named by MIL-A-8625, while coatings thicker than 25 μm (0.001") are known as Type III, hardcoat, hard anodizing, or engineered anodizing. Standards for thick sulfuric anodizing are given by MIL-A-8625 Type III, AMS 2469, BS 5599, and BS EN 2536.

Didn't mean to hijack, just to inform myself and others who may be intersted.