Are Parts Blued or Parkerized?
Printed From: The Carbine Collector's Club
Category: The Club
Forum Name: Parts Markings
Forum Description: Questions and Answers
URL: http://www.uscarbinecal30.com/forum/forum_posts.asp?TID=5224
Printed Date: Apr 23 2024 at 3:03am
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Topic: Are Parts Blued or Parkerized?
Posted By: Quibbley
Subject: Are Parts Blued or Parkerized?
Date Posted: Feb 02 2021 at 2:45pm
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I am working on the data sheet for my rifle andI am having trouble determining whether certain parts are blued or parkerized. It is my understanding that parkerized parts are gray in color, maybe light gray or dark gray depending on the age and wearing on the metal or they may have a greenish color. Usually parkerized parts have a dull finish as opposed to a shiny finish. I have some parts that are dull black. Are dull black parts considered to be blued? Or are these parts parkerized and the color is black, i.e. black parkerization? Here is a pic of the trigger housing and slide. Are these blued or parkerized? Thanks...  ------------- Quibbley |
Replies:
Posted By: kro1970
Date Posted: Feb 02 2021 at 3:12pm
| Looks parkerized to me |
Posted By: kro1970
Date Posted: Feb 02 2021 at 3:14pm
| Zinc parkerizing is grey and Manganese parkerizing almost black |
Posted By: lancer114
Date Posted: Feb 02 2021 at 4:11pm
| Was there a milspec for WWII weapons parkerizing as to which type to use? |
Posted By: Quibbley
Date Posted: Feb 02 2021 at 4:38pm
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Thanks guys. I will list these components as Parked on my data sheet. Good question Lancer114 (from a fellow Virginian). ------------- Quibbley |
Posted By: jackp1028
Date Posted: Feb 02 2021 at 5:59pm
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Most of the detailed original part drawings I've been able to find refer to MIL STD 171 finish 5.3.1.2. or 5.3.2.2. (manganese or zinc phosphate, respectively). Later drawings frequently use Spec 57-0-2 Class A or B which I suspect is a more contemporary, equivalent "Final Protective Finish" specification. I have also read where this specification has been replaced with the modern specification, MIL-DTL-16232G. All of these specifications are for phosphate finishes. Only a few parts are specified to be finished "Type III, Oxide Black" (AKA Blued). An interesting note, the drawing I have for the Type 2 (round) bolt, dated 1943, calls out for a manganese (black) phosphate finish, not black oxide. However, the generally accepted belief is that original carbines were to have been made with bolts having a black oxide finish. I wonder...? ------------- JackP |
Posted By: m1a1fan
Date Posted: Feb 02 2021 at 9:01pm
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I also struggled with the the color sections of a datasheet. One day a high ranking member made it crystal clear. Think not of color
No park or blue; think Crayons Describe what you see |
Posted By: Why Carbines?
Date Posted: Feb 02 2021 at 9:22pm
| WTF? |
Posted By: 03manV
Date Posted: Feb 02 2021 at 10:48pm
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WTF? x 2 ------------- Don |
Posted By: tenOCEE
Date Posted: Feb 03 2021 at 8:43am
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https://www.youtube.com/watch?v=-fMjspnFemM" rel="nofollow - Make Your Future Danny - YouTube The Grand Rapids bolts have that dark phosphate look, don't they? They aren't that jewel blue of Wins, the black shine of later ones but have that dull, dark look. ------------- My sig: Seen an IP or S'G'? Add it to my registry. We'll check consecutives. https://grandrapids.wufoo.com/forms/zzlnt0519k86xs/" rel="nofollow - https://grandrapids.wufoo.com/forms/zzlnt0519k86xs/ |
Posted By: Matt_X
Date Posted: Feb 03 2021 at 11:21am
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I think what he's saying is that when in doubt about the finishing process, just describe what you see. What I see in the photos above are a matte black finish. Since I don't see texture in the surface, I'd be tempted to say 'blued' but I was not aware that manganese phosphate could produce a similar surface. I've seen a lot more examples of bluing than of parkerizing. So I still struggle in IDing the various types of 'parkerizing' (I think many others do too.) For the bolt pictured below, I wrote blued black on the datasheet. I think that is correct but...   |