Black Hardcoat Anodize with Grit Blast Finish of an Aluminum Extension Receiver

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Black Hardcoat Anodize
Black Hardcoat Anodize
Black Hardcoat Anodize of an Aluminum Extension Receiver
Black Hardcoat Anodize of an Aluminum Extension Receiver

At American Anodizing, we are dedicated to performing high quality metal finishing with a focus on timely deliveries and customer satisfaction. In the project highlighted here, we were contracted by the military to finish an extension receiver, a component used in a firearm application. The part was composed of 7075 and 6061 aluminum and measured 7” by 1.5”. A hardcoat anodizing was required for this part, ideal due to its imparted strength and aesthetic qualities along with its non-conductive, abrasion resistant, heat and wear resistant aspects. The component was initially prepared for treatment with etching and grit blasting procedures, to ensure a uniform and non-reflective matte finish. The type III sulfuric hardcoat anodizing process was carried out in conformance with MIL-A-8625, and dyed black as requested. A mid temperature nickel acetate seal was applied to close the porous aluminum oxide layer.

In process testing methods were implemented to assure quality and accuracy, utilizing eddy current metering to measure coating thickness. Turnaround time for this anodizing project is 5 to 7 days, and we process 20,000 to 30,000 units per month with shipment to locations on the East Coast. For more details about this black hardcoat anodizing project or our other capabilities please see the table below or contact us directly.

Black Hardcoat Anodize with Grit Blast Finish of an Aluminum Extension Receiver Project Highlights

Product Name
Extension Receiver
Product Description
Type III Sulfuric Anodize; Hardcoat
Capabilities Applied/Processes
Black Hardcoat Anodizing with Nickel Acetate Seal
Grit Blasting
Overall Part Dimensions
7” x 1.5”
Tightest Tolerances
Cosmetic Finish; Grit Blasting for Non-Reflective Matte Finish Type III Hardcoat Mil Thickness
Material Substrate
7075/6061 Aluminum
Material Finish
Mil-A-8625 Hardcoat Anodize
In process testing/inspection performed
Eddy Current Metering for Military Mil Thickness
Industry for Use
20,000 – 30,000 per Month
Delivery/Turnaround Time
5 – 7 days
Delivery Location
East Coast
Standards Met
Customer Specifications, CAD Drawing
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