From: Epijk@aol.com
Message-ID: <41.cb7e59b.28591dde@aol.com>
Date: Wed, 13 Jun 2001 15:49:50 EDT
Subject: Re: Powder Coating Aluminum
To: lancair.list@olsusa.com
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Reply-To: lancair.list@olsusa.com

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Your motor mount is probably 4130 steel in the normalized condition. 400=B0F=
=20
won't affect the temper of that metal. However, depending on the specific=20
material and heat treat condition of the aluminum (7076-T6? 6061-T6?=20
2024-T3?) a 400=B0F soak could degrade the material properties quite a bit.=20=
20=20
minutes might not hurt, but do you want to experiment?
BTW, the fact that your motor mount hasn't failed in 35 hours is essentially=
=20
meaningless data. Try to understand the difference between high-cycle fatigu=
e=20
properties and ultimate tensile properties.
Jack Kane
EPI, Inc.
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