按照ASTM B545 標準鍍錫，C 類，鍍層厚度是多少？

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請教：按照ASTM   B545  標準鍍錫，C 類，鍍層厚度是多少？

sjhuangjoanna

Spec. Thickness Comment
ASTM-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".
; T) m7 x- ]) E+ r7 [Class A .0001" min   
% o3 C5 s* a; K* _- ]( EClass B .0002" min   
, w1 a, S6 ?9 Q: I7 O5 xClass C .00032" min .0004" min. for steel.
) ^; y9 Z5 _, nClass 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".
9 e8 d" l$ O2 [8 z$ KType Matte   
Type Bright   
" ~" ^- w, A/ cType Flow-
brightened  ----------- Flow brightening available
最少0.00032 英寸，就是 8微米