按照ASTM B545 標準鍍錫，C 類,，鍍層厚度是多少,？

105633469

請教：按照ASTM   B545  標準鍍錫，C 類,，鍍層厚度是多少,？

sjhuangjoanna

Spec. Thickness Comment
8 q$ `) t# t1 W5 Q4 c2 I5 J+ O4 RASTM-B-
545-97e1   ASTM requires purchaser to supply information, such as base metal, underplating, test requirements and test methods etc. In general, copper alloys containing more than 5% Zn shall have a copper undercoating of at least 0.0001" or nickel undercoating of at least 0.000050".
! l# J$ @7 O& i, W$ RClass A .0001" min   
Class B .0002" min   
4 B- l2 ~$ x9 g, E6 c6 Y- N! ]: K* n4 qClass C .00032" min .0004" min. for steel.
8 ?/ y9 W  m9 c+ W' x; PClass D .0006" min .0008" min. for steel.
Class E .0012" min ASTM requires purchaser to supply information, such as base metal, underplating, test requirements and test methods etc. In general, copper alloys containing more than 5% Zn shall have a copper undercoating of at least 0.0001" or nickel undercoating of at least 0.000050".
7 U  O: S/ ]2 h: P9 m4 SType Matte   
Type Bright   
% D# ^. @  V" ]6 rType Flow-
( h( A: o0 E- rbrightened  ----------- Flow brightening available
最少0.00032 英寸，就是 8微米