Anodizing typically ranges up to 5 mils thickness. The three most common variations of aluminum anodizing include chromic anodizing (type I), sulfuric anodizing (type II) and hard anodizing (type III).

What should be the thickness of anodizing?

Anodizing typically ranges up to 5 mils thickness. The three most common variations of aluminum anodizing include chromic anodizing (type I), sulfuric anodizing (type II) and hard anodizing (type III).

What is Mil Spec anodizing?

Military specification MIL-A-8625 is the model spec for many components that need anodized for the military and/or aerospace industry. The specification covers all the requirements needed for six types and two classes of electrolytically formed anodic coatings on aluminum and aluminum alloys.

How many amps do you need to anodize?

For type II commercial anodizing clear or dyed parts generally 24 volts is needed. As far as amp capacity a good rule to follow is 10-12 amps for every sq. foot of parts to be processes. To do type III “hard coat” 75 volts should cover most applications for thickness around 2 mils.

What is MIL-A-8625 Type III?

TYPE III : HARD ANODIC COATINGS MIL-A-8625 Type III sulfuric acid anodizing at 36’F with a coating thickness of 2 – 2.5 mils (very thick!!). This kind of anodizing is accomplished with a bath similar to the standard sulfuric process, but with the temperature reduced to about 0° C to slow the dissolution rate.

What is the 720 rule?

The 720 Rule describes the relationship between the amount of current passed through an aluminum surface and the resultant anodic oxide thickness produced over time.

Has mil a 8625 been superseded?

Published Date: August 28, 2019. Status: Superseded By: Superseded By: MIL-PRF-8625.

What is the 720 rule for anodizing?

The 720 rule allows anodizers using our LCD (Low Current Density) anodizing method to input variables such as time, current density or desired anodized layer thickness and solve for the other paramters.

What voltage do you anodize aluminum?

You should be anodizing at 12-15 amps per sq ft of surface area for decorative anodizing, so size your rectifier accordingly (20 volts should be more than sufficient). If you want to increase your load size, you’ll also want to make sure your cooling system can handle your needs, as well.

What is the difference between type1 and type 2 anodize?

Type I anodize refers to chromic acid anodizing. Type II is normal “clear” sulfuric acid anodizing. Type III is “hardcoat” using sulfuric acid or mixed chemistry electrolytes. All Linetec anodize finishes are produced as a Class I coating, with the exception of ANO-204 Clear, which is a Class II coating.

How much thickness does black anodize add?

Most shops probably consider 0.0005″ anodizing the minimum for black, but many shops making high quality stage equipment, etc. will insist on at least 0.0006″ or more.

How do you calculate anodizing cost?

We will calculate total measurements of all windows and total kgs for e.g. say 100 kg for one 2BHK flat. So we will multiply 100kg multiplied by Rs. 40 = 4000 will be anodizing cost and if we multiply 100 kg with Rs. 200 = 20,000 will be material cost.