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QQ-P-416 revised bake from 3 hours to 23 hours

I am fabricating a torsion spring made of 0.112" diameter Music spring wire (ASTM A228)
We will stress relieve @ 475 deg F / 30 minutes.
The plating spec for drawing revision F was 375 °F±25 °F for 3 hours.
The plating spec for drawing revision G is now 275 °F±25 °F for 23 hours.

My local plater will not quote overnight baking.
Is there a Cad plating process compliant with AMSQQP416 that will eliminate the need for this extended bake?

Gary Valencis
Spring Manufacturer - Plainville, Connecticut, USA
December 18, 2009

There used to be a number of very qualified plating shops within 50 miles of your location that will do 23 hour baking. Get out the yellow pages and start calling.

James Watts
- Navarre, Florida
December 21, 2009

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