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metallury question

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  #1  
Unread 03-18-2008, 11:44 PM
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metallury question

At what temp. will the structure of the metal in my action and barrel start changing? The guy that is going to bake my powder coat wants to do it at 390 degrees. Is this to high?
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  •   #2  
    Unread 03-19-2008, 07:22 AM
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    Metalurgy

    Not if your action is SS or CM.
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      #3  
    Unread 03-19-2008, 08:38 PM
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    Action is 4140 and barrel is 416 stainless. Thanks. They are going in.
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      #4  
    Unread 03-20-2008, 04:32 PM
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    Not too much other than maybe a little extra minor stress relief

    Mule
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      #5  
    Unread 03-20-2008, 04:35 PM
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    Quote:
    Originally Posted by 6mm Shooter View Post
    At what temp. will the structure of the metal in my action and barrel start changing? The guy that is going to bake my powder coat wants to do it at 390 degrees. Is this to high?
    ,,,,,,,,,,,,,,,,,,,

    NO.

    Peter
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      #6  
    Unread 03-27-2008, 11:54 PM
    TAP TAP is offline
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    400 Degrees is a common temp to draw back heat treated tool steel to reduce brittleness, increase toughness, and reduce some stress. This temp varies with the type of tool steel being used and the use of the tool. Just as important as the temp being used is the time that the tool is left at that temp. You need to leave the tool in question in the heat range set for a long enough period of time ( depending on material, material thickness, use of tool, etc. ) to have any real impact. I am specifically talking about lower temps, as a higher, more intense heat, i.e., acetlyene torch can have an affect in a very short time. It is doubtful, as already said, that the time and temp needed to bake your finish will have any affect.
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