Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ
The authoritative public forum
for Metal Finishing since 1989
-----
I have components that need to be tin/lead plated to MIL-F-14072 F.
What type of solder is used for this class, M230? 63/37 sn/pb? The drawing does not specify.
Rick Flores2006
2006
I'm not sure of the question. MIL-F-14072D (latest revision per ASSIST) finish M230 is defined in Table III (on page 34): A base plating of 0.0025" copper per MIL-C-14550, Class 4, plus 0.0076" electroplated lead-tin (50-70% tin) per MIL-P-81728. Footnote 1 of Table III requires reflow of the electroplated lead-tin.
Finish M258 (page 31) is 0.0076" hot-dipped lead-tin solder (40-60%) per QQ-S-571. Solders and impurity limits are given for Class 1 & Class 2 applications, as well as information on fluxes.
- Goleta, California
Finishing.com honored Ken for his countless carefully researched responses. He passed away May 14, 2015.Rest in peace, Ken. Thank you for your hard work which the finishing world, and we at finishing.com, continue to benefit from.
(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)
Q, A, or Comment on THIS thread -or- Start a NEW Thread
Q, A, or Comment on THIS thread -or- Start a NEW Thread